; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -S -passes=instcombine < %s | FileCheck %s

declare nofpclass(ninf nnorm nsub nzero nan) float @returns_positive()
declare nofpclass(ninf nnorm nsub nzero) float @returns_positive_or_nan()

declare nofpclass(pinf pnorm psub pzero nan) float @returns_negative()
declare nofpclass(pinf pnorm psub pzero) float @returns_negative_or_nan()

declare nofpclass(ninf nnorm nsub nan) float @returns_positive_or_zero()
declare nofpclass(pinf pnorm psub nan) float @returns_negative_or_zero()

declare nofpclass(ninf nnorm nsub) float @returns_positive_or_zero_or_nan()
declare nofpclass(pinf pnorm psub) float @returns_negative_or_zero_or_nan()

declare nofpclass(inf sub norm nan) float @returns_zero()
declare nofpclass(inf sub norm) float @returns_zero_or_nan()
declare nofpclass(inf sub norm nan pzero) float @returns_nzero()
declare nofpclass(inf sub norm pzero) float @returns_nzero_or_nan()
declare nofpclass(inf sub norm nan nzero) float @returns_pzero()
declare nofpclass(inf sub norm nzero) float @returns_pzero_or_nan()
declare nofpclass(inf norm sub zero) float @returns_nan()
declare nofpclass(qnan inf norm sub zero) float @returns_snan()

declare nofpclass(ninf norm sub zero nan) float @returns_pinf()
declare nofpclass(ninf norm sub zero) float @returns_pinf_or_nan()

declare nofpclass(pinf norm sub zero nan) float @returns_ninf()
declare nofpclass(pinf norm sub zero) float @returns_ninf_or_nan()

declare nofpclass(norm sub zero nan) float @returns_inf()
declare nofpclass(norm sub zero) float @returns_inf_or_nan()

declare nofpclass(inf pnorm sub zero nan) float @returns_nnorm()
declare nofpclass(inf nnorm sub zero nan) float @returns_pnorm()

declare nofpclass(inf pnorm sub zero) float @returns_nnorm_or_nan()
declare nofpclass(inf nnorm sub zero) float @returns_pnorm_or_nan()

declare nofpclass(inf norm psub zero nan) float @returns_nsub()
declare nofpclass(inf norm nsub zero nan) float @returns_psub()

declare nofpclass(pinf pnorm psub zero nan) float @returns_negative_nonzero()
declare nofpclass(ninf nnorm nsub zero nan) float @returns_positive_nonzero()
declare nofpclass(pinf pnorm psub zero) float @returns_negative_nonzero_or_nan()
declare nofpclass(ninf nnorm nsub zero) float @returns_positive_nonzero_or_nan()

; -> qnan
define nofpclass(inf norm sub zero) float @ret_only_nan(float %x, float %y) {
; CHECK-LABEL: define nofpclass(inf zero sub norm) float @ret_only_nan(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(inf norm sub zero qnan) float @ret_only_snan(float %x, float %y) {
; CHECK-LABEL: define nofpclass(qnan inf zero sub norm) float @ret_only_snan(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(inf norm sub zero snan) float @ret_only_qnan(float %x, float %y) {
; CHECK-LABEL: define nofpclass(snan inf zero sub norm) float @ret_only_qnan(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(nan norm sub zero) float @ret_only_inf(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan zero sub norm) float @ret_only_inf(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(nan pinf norm sub zero) float @ret_only_ninf(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan pinf zero sub norm) float @ret_only_ninf(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    ret float 0xFFF0000000000000
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(nan ninf norm sub zero) float @ret_only_pinf(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan ninf zero sub norm) float @ret_only_pinf(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(inf nan norm sub) float @ret_only_zero(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan inf sub norm) float @ret_only_zero(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(inf nan norm sub nzero) float @ret_only_pzero(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan inf nzero sub norm) float @ret_only_pzero(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    ret float 0.000000e+00
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(inf nan norm sub pzero) float @ret_only_nzero(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan inf pzero sub norm) float @ret_only_nzero(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    ret float -0.000000e+00
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(nan) float @ret_no_nans(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan) float @ret_no_nans(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(inf) float @ret_no_infs(float %x, float %y) {
; CHECK-LABEL: define nofpclass(inf) float @ret_no_infs(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(nan inf) float @ret_no_nans_no_infs(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan inf) float @ret_no_nans_no_infs(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

; -> qnan
define nofpclass(ninf nnorm nsub nzero) float @ret_known_positive_or_nan__maximumnum__negative_or_nan___negative_or_nan() {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float @ret_known_positive_or_nan__maximumnum__negative_or_nan___negative_or_nan() {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_NAN0:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_NAN1:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %must.be.negative.or.nan0 = call float @returns_negative_or_nan()
  %must.be.negative.or.nan1 = call float @returns_negative_or_nan()
  %result = call float @llvm.maximumnum.f32(float %must.be.negative.or.nan0, float %must.be.negative.or.nan1)
  ret float %result
}

; -> qnan
define nofpclass(pinf pnorm psub pzero) float @ret_known_negative_or_nan__maximumnum__positive_or_nan___positive_or_nan() {
; CHECK-LABEL: define nofpclass(pinf pzero psub pnorm) float @ret_known_negative_or_nan__maximumnum__positive_or_nan___positive_or_nan() {
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_NAN0:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_NAN1:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %must.be.positive.or.nan0 = call float @returns_positive_or_nan()
  %must.be.positive.or.nan1 = call float @returns_positive_or_nan()
  %result = call float @llvm.maximumnum.f32(float %must.be.positive.or.nan0, float %must.be.positive.or.nan1)
  ret float %result
}

define nofpclass(snan) float @known_positive_or_nan__maximumnum__known_negative_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_positive_or_nan__maximumnum__known_negative_or_nan() {
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[MUST_BE_POSITIVE_OR_NAN]], float [[MUST_BE_NEGATIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.positive.or.nan = call float @returns_positive_or_nan()
  %must.be.negative.or.nan = call float @returns_negative_or_nan()
  %result = call float @llvm.maximumnum.f32(float %must.be.positive.or.nan, float %must.be.negative.or.nan)
  ret float %result
}

define nofpclass(snan) float @known_negative_or_nan__maximumnum__known_positive_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_negative_or_nan__maximumnum__known_positive_or_nan() {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[MUST_BE_NEGATIVE_OR_NAN]], float [[MUST_BE_POSITIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative.or.nan = call float @returns_negative_or_nan()
  %must.be.positive.or.nan = call float @returns_positive_or_nan()
  %result = call float @llvm.maximumnum.f32(float %must.be.negative.or.nan, float %must.be.positive.or.nan)
  ret float %result
}

define nofpclass(snan) float @known_positive_or_nan__maximumnum__known_negative() {
; CHECK-LABEL: define nofpclass(snan) float @known_positive_or_nan__maximumnum__known_negative() {
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[MUST_BE_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[MUST_BE_POSITIVE_OR_NAN]], float [[MUST_BE_NEGATIVE]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.positive.or.nan = call float @returns_positive_or_nan()
  %must.be.negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %must.be.positive.or.nan, float %must.be.negative)
  ret float %result
}

define nofpclass(snan) float @known_negative__maximumnum__known_positive_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_negative__maximumnum__known_positive_or_nan() {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[MUST_BE_NEGATIVE]], float [[MUST_BE_POSITIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative = call float @returns_negative()
  %must.be.positive.or.nan = call float @returns_positive_or_nan()
  %result = call float @llvm.maximumnum.f32(float %must.be.negative, float %must.be.positive.or.nan)
  ret float %result
}

define nofpclass(ninf nnorm nsub nzero) float @ret_always_positive_or_nan__select_always_negative_or_unknown__maximumnum__unknown(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float @ret_always_positive_or_nan__select_always_negative_or_unknown__maximumnum__unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_LHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[SELECT_LHS]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative = call float @returns_negative()
  %select.lhs = select i1 %cond, float %always.negative, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %select.lhs, float %unknown1)
  ret float %result
}

define nofpclass(ninf nnorm nsub nzero) float @ret_always_positive_or_nan__unknown__maximumnum__select_always_negative_or_unknown(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float @ret_always_positive_or_nan__unknown__maximumnum__select_always_negative_or_unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN1]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative = call float @returns_negative()
  %select.rhs = select i1 %cond, float %always.negative, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %unknown1, float %select.rhs)
  ret float %result
}

define nofpclass(ninf nnorm nsub nzero nan) float @ret_always_positive__select_always_negative_or_unknown__maximumnum__unknown(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(nan ninf nzero nsub nnorm) float @ret_always_positive__select_always_negative_or_unknown__maximumnum__unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_LHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[SELECT_LHS]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative = call float @returns_negative()
  %select.lhs = select i1 %cond, float %always.negative, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %select.lhs, float %unknown1)
  ret float %result
}

define nofpclass(ninf nnorm nsub nzero nan) float @ret_always_positive__unknown__maximumnum__select_always_negative_or_unknown(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(nan ninf nzero nsub nnorm) float @ret_always_positive__unknown__maximumnum__select_always_negative_or_unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN1]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative = call float @returns_negative()
  %select.rhs = select i1 %cond, float %always.negative, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %unknown1, float %select.rhs)
  ret float %result
}

define nofpclass(ninf nnorm nsub nzero) float @ret_always_negative_or_nan__simplify_unneeded_lhs_rhs(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float @ret_always_negative_or_nan__simplify_unneeded_lhs_rhs(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE0:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[ALWAYS_NEGATIVE1:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_LHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE0]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[UNKNOWN1]], float [[ALWAYS_NEGATIVE1]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[SELECT_LHS]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative0 = call float @returns_negative()
  %always.negative1 = call float @returns_negative()
  %select.lhs = select i1 %cond, float %always.negative0, float %unknown0
  %select.rhs = select i1 %cond, float %unknown1, float %always.negative1
  %result = call float @llvm.maximumnum.f32(float %select.lhs, float %select.rhs)
  ret float %result
}

define nofpclass(ninf nnorm nsub nzero nan) float @ret_always_negative__simplify_unneeded_lhs_rhs(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(nan ninf nzero nsub nnorm) float @ret_always_negative__simplify_unneeded_lhs_rhs(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE0:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[ALWAYS_NEGATIVE1:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_LHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE0]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[UNKNOWN1]], float [[ALWAYS_NEGATIVE1]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[SELECT_LHS]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative0 = call float @returns_negative()
  %always.negative1 = call float @returns_negative()
  %select.lhs = select i1 %cond, float %always.negative0, float %unknown0
  %select.rhs = select i1 %cond, float %unknown1, float %always.negative1
  %result = call float @llvm.maximumnum.f32(float %select.lhs, float %select.rhs)
  ret float %result
}

define nofpclass(nan) float @no_fold_select_always_negative_0(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(nan) float @no_fold_select_always_negative_0(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_LHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[SELECT_LHS]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative = call float @returns_negative()
  %select.lhs = select i1 %cond, float %always.negative, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %select.lhs, float %unknown1)
  ret float %result
}

define nofpclass(nan) float @no_fold_select_always_negative_1(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(nan) float @no_fold_select_always_negative_1(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN1]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative = call float @returns_negative()
  %select.rhs = select i1 %cond, float %always.negative, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %unknown1, float %select.rhs)
  ret float %result
}

; Cannot fold out due to possible -0
define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_0() {
; CHECK-LABEL: define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_0() {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_ZERO:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan float @llvm.maximumnum.f32(float [[MUST_BE_NEGATIVE_OR_ZERO]], float [[MUST_BE_POSITIVE_OR_ZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative.or.zero = call float @returns_positive_or_zero()
  %must.be.positive.or.zero = call float @returns_negative_or_zero()
  %result = call float @llvm.maximumnum.f32(float %must.be.negative.or.zero, float %must.be.positive.or.zero)
  ret float %result
}

; Cannot fold out due to possible -0
define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_1() {
; CHECK-LABEL: define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_1() {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_ZERO:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan float @llvm.maximumnum.f32(float [[MUST_BE_POSITIVE_OR_ZERO]], float [[MUST_BE_NEGATIVE_OR_ZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative.or.zero = call float @returns_positive_or_zero()
  %must.be.positive.or.zero = call float @returns_negative_or_zero()
  %result = call float @llvm.maximumnum.f32(float %must.be.positive.or.zero, float %must.be.negative.or.zero)
  ret float %result
}

define nofpclass(snan) float @nsz_fold_negative_or_zero__positive_or_zero_0() {
; CHECK-LABEL: define nofpclass(snan) float @nsz_fold_negative_or_zero__positive_or_zero_0() {
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO1:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    ret float [[MUST_BE_POSITIVE_OR_ZERO1]]
;
  %must.be.negative.or.zero = call float @returns_negative_or_zero()
  %must.be.positive.or.zero = call float @returns_positive_or_zero()
  %result = call nsz float @llvm.maximumnum.f32(float %must.be.negative.or.zero, float %must.be.positive.or.zero)
  ret float %result
}

define nofpclass(snan) float @nsz_fold_negative_or_zero__positive_or_zero_1() {
; CHECK-LABEL: define nofpclass(snan) float @nsz_fold_negative_or_zero__positive_or_zero_1() {
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO1:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    ret float [[MUST_BE_POSITIVE_OR_ZERO1]]
;
  %must.be.negative.or.zero = call float @returns_negative_or_zero()
  %must.be.positive.or.zero = call float @returns_positive_or_zero()
  %result = call nsz float @llvm.maximumnum.f32(float %must.be.positive.or.zero, float %must.be.negative.or.zero)
  ret float %result
}

define nofpclass(nsub) float @lhs_must_be_pinf_or_nan(float %unknown, float nofpclass(ninf norm zero sub) %must.be.pinf.or.nan) {
; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_pinf_or_nan(
; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(ninf zero sub norm) [[MUST_BE_PINF_OR_NAN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[MUST_BE_PINF_OR_NAN]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %must.be.pinf.or.nan, float %unknown)
  ret float %result
}

define nofpclass(nsub) float @rhs_must_be_pinf_or_nan(float nofpclass(ninf norm zero sub) %must.be.pinf.or.nan, float %unknown) {
; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_pinf_or_nan(
; CHECK-SAME: float nofpclass(ninf zero sub norm) [[MUST_BE_PINF_OR_NAN:%.*]], float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[MUST_BE_PINF_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown, float %must.be.pinf.or.nan)
  ret float %result
}

define nofpclass(nsub) float @lhs_must_be_pinf(float %unknown, float nofpclass(nan ninf norm zero sub) %must.be.pinf) {
; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_pinf(
; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(nan ninf zero sub norm) [[MUST_BE_PINF:%.*]]) {
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %result = call float @llvm.maximumnum.f32(float %must.be.pinf, float %unknown)
  ret float %result
}

define nofpclass(nsub) float @rhs_must_be_pinf(float nofpclass(nan ninf norm zero sub) %must.be.pinf, float %unknown) {
; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_pinf(
; CHECK-SAME: float nofpclass(nan ninf zero sub norm) [[MUST_BE_PINF:%.*]], float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %result = call float @llvm.maximumnum.f32(float %unknown, float %must.be.pinf)
  ret float %result
}

; -> inf
define nofpclass(nsub) float @lhs_must_be_pinf_rhs_non_nan(float nofpclass(nan) %not.nan, float nofpclass(nan ninf norm zero sub) %must.be.pinf) {
; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_pinf_rhs_non_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]], float nofpclass(nan ninf zero sub norm) [[MUST_BE_PINF:%.*]]) {
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %result = call float @llvm.maximumnum.f32(float %must.be.pinf, float %not.nan)
  ret float %result
}

; -> inf
define nofpclass(nsub) float @rhs_must_be_pinf_lhs_non_nan(float nofpclass(nan ninf norm zero sub) %must.be.pinf, float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_pinf_lhs_non_nan(
; CHECK-SAME: float nofpclass(nan ninf zero sub norm) [[MUST_BE_PINF:%.*]], float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %result = call float @llvm.maximumnum.f32(float %not.nan, float %must.be.pinf)
  ret float %result
}

define nofpclass(nsub) float @lhs_must_be_ninf_or_nan(float %unknown, float nofpclass(pinf norm zero sub) %must.be.ninf.or.nan) {
; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_ninf_or_nan(
; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(pinf zero sub norm) [[MUST_BE_NINF_OR_NAN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[MUST_BE_NINF_OR_NAN]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %must.be.ninf.or.nan, float %unknown)
  ret float %result
}

define nofpclass(nsub) float @rhs_must_be_ninf_or_nan(float nofpclass(pinf norm zero sub) %must.be.ninf.or.nan, float %unknown) {
; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_ninf_or_nan(
; CHECK-SAME: float nofpclass(pinf zero sub norm) [[MUST_BE_NINF_OR_NAN:%.*]], float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[MUST_BE_NINF_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown, float %must.be.ninf.or.nan)
  ret float %result
}

define nofpclass(nsub) float @lhs_must_be_ninf(float %unknown, float nofpclass(nan pinf norm zero sub) %must.be.ninf) {
; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_ninf(
; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(nan pinf zero sub norm) [[MUST_BE_NINF:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float 0xFFF0000000000000)
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %must.be.ninf, float %unknown)
  ret float %result
}

define nofpclass(nsub) float @rhs_must_be_ninf(float nofpclass(nan pinf norm zero sub) %must.be.ninf, float %unknown) {
; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_ninf(
; CHECK-SAME: float nofpclass(nan pinf zero sub norm) [[MUST_BE_NINF:%.*]], float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float 0xFFF0000000000000)
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown, float %must.be.ninf)
  ret float %result
}


; -> not.nan
define nofpclass(nsub) float @lhs_must_be_ninf_rhs_non_nan(float nofpclass(nan) %not.nan, float nofpclass(nan pinf norm zero sub) %must.be.ninf) {
; CHECK-LABEL: define nofpclass(nsub) float @lhs_must_be_ninf_rhs_non_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]], float nofpclass(nan pinf zero sub norm) [[MUST_BE_NINF:%.*]]) {
; CHECK-NEXT:    ret float [[NOT_NAN]]
;
  %result = call float @llvm.maximumnum.f32(float %must.be.ninf, float %not.nan)
  ret float %result
}

; -> not.nan
define nofpclass(nsub) float @rhs_must_be_ninf_lhs_non_nan(float nofpclass(nan pinf norm zero sub) %must.be.ninf, float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(nsub) float @rhs_must_be_ninf_lhs_non_nan(
; CHECK-SAME: float nofpclass(nan pinf zero sub norm) [[MUST_BE_NINF:%.*]], float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    ret float [[NOT_NAN]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nan, float %must.be.ninf)
  ret float %result
}

define nofpclass(nzero) float @result_not_nzero(float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(nzero) float @result_not_nzero(
; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown0, float %unknown1)
  ret float %result
}

define nofpclass(pzero) float @result_not_pzero(float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(pzero) float @result_not_pzero(
; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown0, float %unknown1)
  ret float %result
}

define nofpclass(zero) float @result_not_zero(float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(zero) float @result_not_zero(
; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown0, float %unknown1)
  ret float %result
}

define nofpclass(zero) float @result_not_zero__daz(float %unknown0, float %unknown1) #0 {
; CHECK-LABEL: define nofpclass(zero) float @result_not_zero__daz(
; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown0, float %unknown1)
  ret float %result
}

define nofpclass(zero) float @result_not_zero__dynamic(float %unknown0, float %unknown1) #1 {
; CHECK-LABEL: define nofpclass(zero) float @result_not_zero__dynamic(
; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) #[[ATTR1:[0-9]+]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown0, float %unknown1)
  ret float %result
}

define nofpclass(zero) float @result_not_zero_or_sub(float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(zero) float @result_not_zero_or_sub(
; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown0, float %unknown1)
  ret float %result
}

define nofpclass(zero sub) float @result_not_zero_or_sub__daz(float %unknown0, float %unknown1) #0 {
; CHECK-LABEL: define nofpclass(zero sub) float @result_not_zero_or_sub__daz(
; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) #[[ATTR0]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown0, float %unknown1)
  ret float %result
}

define nofpclass(zero sub) float @result_not_zero_or_sub__dynamic(float %unknown0, float %unknown1) #1 {
; CHECK-LABEL: define nofpclass(zero sub) float @result_not_zero_or_sub__dynamic(
; CHECK-SAME: float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN0]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown0, float %unknown1)
  ret float %result
}

define nofpclass(snan) float @lhs_not_zero(float nofpclass(zero) %not.zero, float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @lhs_not_zero(
; CHECK-SAME: float nofpclass(zero) [[NOT_ZERO:%.*]], float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_ZERO]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.zero, float %unknown)
  ret float %result
}

define nofpclass(snan) float @rhs_not_zero(float %unknown, float nofpclass(zero) %not.zero) {
; CHECK-LABEL: define nofpclass(snan) float @rhs_not_zero(
; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(zero) [[NOT_ZERO:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[NOT_ZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %unknown, float %not.zero)
  ret float %result
}

define nofpclass(snan) float @sources_not_zero(float nofpclass(zero) %not.zero0, float nofpclass(zero) %not.zero1) {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero(
; CHECK-SAME: float nofpclass(zero) [[NOT_ZERO0:%.*]], float nofpclass(zero) [[NOT_ZERO1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_ZERO0]], float [[NOT_ZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.zero0, float %not.zero1)
  ret float %result
}

define nofpclass(snan) float @sources_not_zero__daz(float nofpclass(zero) %not.zero0, float nofpclass(zero) %not.zero1) #1 {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero__daz(
; CHECK-SAME: float nofpclass(zero) [[NOT_ZERO0:%.*]], float nofpclass(zero) [[NOT_ZERO1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_ZERO0]], float [[NOT_ZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.zero0, float %not.zero1)
  ret float %result
}

define nofpclass(snan) float @sources_not_zero__dynamic(float nofpclass(zero) %not.zero0, float nofpclass(zero) %not.zero1) #1 {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero__dynamic(
; CHECK-SAME: float nofpclass(zero) [[NOT_ZERO0:%.*]], float nofpclass(zero) [[NOT_ZERO1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_ZERO0]], float [[NOT_ZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.zero0, float %not.zero1)
  ret float %result
}

define nofpclass(snan) float @sources_not_zero_or_sub(float nofpclass(zero sub) %not.zero.sub.0, float nofpclass(zero sub) %not.zero.sub.1) {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero_or_sub(
; CHECK-SAME: float nofpclass(zero sub) [[NOT_ZERO_SUB_0:%.*]], float nofpclass(zero sub) [[NOT_ZERO_SUB_1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.zero.sub.0, float %not.zero.sub.1)
  ret float %result
}

define nofpclass(snan) float @sources_not_zero_or_sub__daz(float nofpclass(zero sub) %not.zero.sub.0, float nofpclass(zero sub) %not.zero.sub.1) #1 {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero_or_sub__daz(
; CHECK-SAME: float nofpclass(zero sub) [[NOT_ZERO_SUB_0:%.*]], float nofpclass(zero sub) [[NOT_ZERO_SUB_1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.zero.sub.0, float %not.zero.sub.1)
  ret float %result
}

define nofpclass(snan) float @sources_not_zero_or_sub__dynamic(float nofpclass(zero sub) %not.zero.sub.0, float nofpclass(zero sub) %not.zero.sub.1) #1 {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_zero_or_sub__dynamic(
; CHECK-SAME: float nofpclass(zero sub) [[NOT_ZERO_SUB_0:%.*]], float nofpclass(zero sub) [[NOT_ZERO_SUB_1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_ZERO_SUB_0]], float [[NOT_ZERO_SUB_1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.zero.sub.0, float %not.zero.sub.1)
  ret float %result
}

define nofpclass(snan) float @sources_not_nzero(float nofpclass(nzero) %not.nzero0, float nofpclass(nzero) %not.nzero1) {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_nzero(
; CHECK-SAME: float nofpclass(nzero) [[NOT_NZERO0:%.*]], float nofpclass(nzero) [[NOT_NZERO1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_NZERO0]], float [[NOT_NZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero0, float %not.nzero1)
  ret float %result
}

define nofpclass(snan) float @sources_not_pzero(float nofpclass(pzero) %not.pzero0, float nofpclass(pzero) %not.pzero1) {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_pzero(
; CHECK-SAME: float nofpclass(pzero) [[NOT_PZERO0:%.*]], float nofpclass(pzero) [[NOT_PZERO1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_PZERO0]], float [[NOT_PZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.pzero0, float %not.pzero1)
  ret float %result
}

define nofpclass(snan) float @lhs_not_nzero_rhs_not_pzero(float nofpclass(nzero) %not.nzero, float nofpclass(pzero) %not.pzero) {
; CHECK-LABEL: define nofpclass(snan) float @lhs_not_nzero_rhs_not_pzero(
; CHECK-SAME: float nofpclass(nzero) [[NOT_NZERO:%.*]], float nofpclass(pzero) [[NOT_PZERO:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_NZERO]], float [[NOT_PZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero, float %not.pzero)
  ret float %result
}

define nofpclass(snan) float @rhs_not_nzero_lhs_not_pzero(float nofpclass(pzero) %not.nzero, float nofpclass(nzero) %not.pzero) {
; CHECK-LABEL: define nofpclass(snan) float @rhs_not_nzero_lhs_not_pzero(
; CHECK-SAME: float nofpclass(pzero) [[NOT_NZERO:%.*]], float nofpclass(nzero) [[NOT_PZERO:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_NZERO]], float [[NOT_PZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero, float %not.pzero)
  ret float %result
}

define nofpclass(snan) float @sources_not_nzero__dynamic(float nofpclass(nzero) %not.nzero0, float nofpclass(nzero) %not.nzero1) #1 {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_nzero__dynamic(
; CHECK-SAME: float nofpclass(nzero) [[NOT_NZERO0:%.*]], float nofpclass(nzero) [[NOT_NZERO1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_NZERO0]], float [[NOT_NZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero0, float %not.nzero1)
  ret float %result
}

define nofpclass(snan) float @sources_not_pzero__dynamic(float nofpclass(pzero) %not.pzero0, float nofpclass(pzero) %not.pzero1) #1 {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_pzero__dynamic(
; CHECK-SAME: float nofpclass(pzero) [[NOT_PZERO0:%.*]], float nofpclass(pzero) [[NOT_PZERO1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_PZERO0]], float [[NOT_PZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.pzero0, float %not.pzero1)
  ret float %result
}

define nofpclass(snan) float @lhs_not_nzero_rhs_not_pzero__dynamic(float nofpclass(nzero) %not.nzero, float nofpclass(pzero) %not.pzero) #1 {
; CHECK-LABEL: define nofpclass(snan) float @lhs_not_nzero_rhs_not_pzero__dynamic(
; CHECK-SAME: float nofpclass(nzero) [[NOT_NZERO:%.*]], float nofpclass(pzero) [[NOT_PZERO:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_NZERO]], float [[NOT_PZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero, float %not.pzero)
  ret float %result
}

define nofpclass(snan) float @rhs_not_nzero_lhs_not_pzero__dynamic(float nofpclass(pzero) %not.nzero, float nofpclass(nzero) %not.pzero) #1 {
; CHECK-LABEL: define nofpclass(snan) float @rhs_not_nzero_lhs_not_pzero__dynamic(
; CHECK-SAME: float nofpclass(pzero) [[NOT_NZERO:%.*]], float nofpclass(nzero) [[NOT_PZERO:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_NZERO]], float [[NOT_PZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero, float %not.pzero)
  ret float %result
}

define nofpclass(snan) float @sources_not_nzero_nsub__dynamic(float nofpclass(nzero nsub) %not.nzero0, float nofpclass(nzero nsub) %not.nzero1) #1 {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_nzero_nsub__dynamic(
; CHECK-SAME: float nofpclass(nzero nsub) [[NOT_NZERO0:%.*]], float nofpclass(nzero nsub) [[NOT_NZERO1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_NZERO0]], float [[NOT_NZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero0, float %not.nzero1)
  ret float %result
}

define nofpclass(snan) float @sources_not_pzero_psub__dynamic(float nofpclass(pzero psub) %not.pzero0, float nofpclass(pzero psub) %not.pzero1) #1 {
; CHECK-LABEL: define nofpclass(snan) float @sources_not_pzero_psub__dynamic(
; CHECK-SAME: float nofpclass(pzero psub) [[NOT_PZERO0:%.*]], float nofpclass(pzero psub) [[NOT_PZERO1:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_PZERO0]], float [[NOT_PZERO1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.pzero0, float %not.pzero1)
  ret float %result
}

define nofpclass(snan) float @lhs_not_nzero_nsub_rhs_not_pzero__dynamic(float nofpclass(nzero nsub) %not.nzero, float nofpclass(pzero psub) %not.pzero) #1 {
; CHECK-LABEL: define nofpclass(snan) float @lhs_not_nzero_nsub_rhs_not_pzero__dynamic(
; CHECK-SAME: float nofpclass(nzero nsub) [[NOT_NZERO:%.*]], float nofpclass(pzero psub) [[NOT_PZERO:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_NZERO]], float [[NOT_PZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero, float %not.pzero)
  ret float %result
}

define nofpclass(snan) float @rhs_not_nzero_nsub_lhs_not_pzero_psub__dynamic(float nofpclass(pzero psub) %not.nzero, float nofpclass(nzero nsub) %not.pzero) #1 {
; CHECK-LABEL: define nofpclass(snan) float @rhs_not_nzero_nsub_lhs_not_pzero_psub__dynamic(
; CHECK-SAME: float nofpclass(pzero psub) [[NOT_NZERO:%.*]], float nofpclass(nzero nsub) [[NOT_PZERO:%.*]]) #[[ATTR1]] {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[NOT_NZERO]], float [[NOT_PZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nzero, float %not.pzero)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum__unknown(float nofpclass(nan) %x, float %y) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum__unknown(
; CHECK-SAME: float nofpclass(nan) [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(snan) float @unknown__maximumnum__not_nan(float %x, float nofpclass(nan) %y) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__maximumnum__not_nan(
; CHECK-SAME: float [[X:%.*]], float nofpclass(nan) [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum__not_nan(float nofpclass(nan) %x, float nofpclass(nan) %y) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum__not_nan(
; CHECK-SAME: float nofpclass(nan) [[X:%.*]], float nofpclass(nan) [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(snan) float @not_snan__maximumnum__not_snan(float nofpclass(snan) %x, float nofpclass(snan) %y) {
; CHECK-LABEL: define nofpclass(snan) float @not_snan__maximumnum__not_snan(
; CHECK-SAME: float nofpclass(snan) [[X:%.*]], float nofpclass(snan) [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(inf) float @ret_noinf__not_qnan__maximumnum__not_qnan(float nofpclass(qnan) %x, float nofpclass(qnan) %y) {
; CHECK-LABEL: define nofpclass(inf) float @ret_noinf__not_qnan__maximumnum__not_qnan(
; CHECK-SAME: float nofpclass(qnan) [[X:%.*]], float nofpclass(qnan) [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(snan) float @known_positive__maximumnum__only_zero() {
; CHECK-LABEL: define nofpclass(snan) float @known_positive__maximumnum__only_zero() {
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[KNOWN_ZERO:%.*]] = call float @returns_zero()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.positive = call float @returns_positive()
  %known.zero = call float @returns_zero()
  %result = call float @llvm.maximumnum.f32(float %known.positive, float %known.zero)
  ret float %result
}

define nofpclass(snan) float @only_zero__maximumnum__known_positive() {
; CHECK-LABEL: define nofpclass(snan) float @only_zero__maximumnum__known_positive() {
; CHECK-NEXT:    [[KNOWN_ZERO:%.*]] = call float @returns_zero()
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.zero = call float @returns_zero()
  %known.positive = call float @returns_positive()
  %result = call float @llvm.maximumnum.f32(float %known.zero, float %known.positive)
  ret float %result
}

define nofpclass(snan) float @known_positive__maximumnum__only_zero_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_positive__maximumnum__only_zero_or_nan() {
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[KNOWN_ZERO_OR_NAN:%.*]] = call float @returns_zero_or_nan()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.positive = call float @returns_positive()
  %known.zero.or.nan = call float @returns_zero_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.positive, float %known.zero.or.nan)
  ret float %result
}

define nofpclass(snan) float @only_zero_or_nan__maximumnum__known_positive() {
; CHECK-LABEL: define nofpclass(snan) float @only_zero_or_nan__maximumnum__known_positive() {
; CHECK-NEXT:    [[KNOWN_ZERO_OR_NAN:%.*]] = call float @returns_zero_or_nan()
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.zero.or.nan = call float @returns_zero_or_nan()
  %known.positive = call float @returns_positive()
  %result = call float @llvm.maximumnum.f32(float %known.zero.or.nan, float %known.positive)
  ret float %result
}

define nofpclass(snan) float @known_positive_or_nan__maximumnum__only_zero() {
; CHECK-LABEL: define nofpclass(snan) float @known_positive_or_nan__maximumnum__only_zero() {
; CHECK-NEXT:    [[KNOWN_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[KNOWN_ZERO:%.*]] = call float @returns_zero()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_POSITIVE_OR_NAN]], float [[KNOWN_ZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.positive.or.nan = call float @returns_positive_or_nan()
  %known.zero = call float @returns_zero()
  %result = call float @llvm.maximumnum.f32(float %known.positive.or.nan, float %known.zero)
  ret float %result
}

define nofpclass(snan) float @only_zero__maximumnum__known_positive_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @only_zero__maximumnum__known_positive_or_nan() {
; CHECK-NEXT:    [[KNOWN_ZERO:%.*]] = call float @returns_zero()
; CHECK-NEXT:    [[KNOWN_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_ZERO]], float [[KNOWN_POSITIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.zero = call float @returns_zero()
  %known.positive.or.nan = call float @returns_positive_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.zero, float %known.positive.or.nan)
  ret float %result
}

define nofpclass(snan) float @known_positive__maximumnum__only_nzero() {
; CHECK-LABEL: define nofpclass(snan) float @known_positive__maximumnum__only_nzero() {
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[KNOWN_NZERO:%.*]] = call float @returns_nzero()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.positive = call float @returns_positive()
  %known.nzero = call float @returns_nzero()
  %result = call float @llvm.maximumnum.f32(float %known.positive, float %known.nzero)
  ret float %result
}

define nofpclass(snan) float @only_nzero__maximumnum__known_positive() {
; CHECK-LABEL: define nofpclass(snan) float @only_nzero__maximumnum__known_positive() {
; CHECK-NEXT:    [[KNOWN_NZERO:%.*]] = call float @returns_nzero()
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.nzero = call float @returns_nzero()
  %known.positive = call float @returns_positive()
  %result = call float @llvm.maximumnum.f32(float %known.nzero, float %known.positive)
  ret float %result
}

define nofpclass(snan) float @known_positive__maximumnum__only_pzero() {
; CHECK-LABEL: define nofpclass(snan) float @known_positive__maximumnum__only_pzero() {
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[KNOWN_PZERO:%.*]] = call float @returns_pzero()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.positive = call float @returns_positive()
  %known.pzero = call float @returns_pzero()
  %result = call float @llvm.maximumnum.f32(float %known.positive, float %known.pzero)
  ret float %result
}

define nofpclass(snan) float @only_pzero__maximumnum__known_positive() {
; CHECK-LABEL: define nofpclass(snan) float @only_pzero__maximumnum__known_positive() {
; CHECK-NEXT:    [[KNOWN_PZERO:%.*]] = call float @returns_pzero()
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.pzero = call float @returns_pzero()
  %known.positive = call float @returns_positive()
  %result = call float @llvm.maximumnum.f32(float %known.pzero, float %known.positive)
  ret float %result
}

define nofpclass(snan) float @known_negative__maximumnum__only_zero_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_negative__maximumnum__only_zero_or_nan() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[KNOWN_ZERO_OR_NAN:%.*]] = call float @returns_zero_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_NEGATIVE]], float [[KNOWN_ZERO_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.negative = call float @returns_negative()
  %known.zero.or.nan = call float @returns_zero_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.negative, float %known.zero.or.nan)
  ret float %result
}

define nofpclass(snan) float @only_zero_or_nan__maximumnum__known_negative() {
; CHECK-LABEL: define nofpclass(snan) float @only_zero_or_nan__maximumnum__known_negative() {
; CHECK-NEXT:    [[KNOWN_ZERO_OR_NAN:%.*]] = call float @returns_zero_or_nan()
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_ZERO_OR_NAN]], float [[KNOWN_NEGATIVE]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.zero.or.nan = call float @returns_zero_or_nan()
  %known.negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %known.zero.or.nan, float %known.negative)
  ret float %result
}

define nofpclass(snan) float @known_negative_or_nan__maximumnum__only_zero() {
; CHECK-LABEL: define nofpclass(snan) float @known_negative_or_nan__maximumnum__only_zero() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[KNOWN_ZERO:%.*]] = call float @returns_zero()
; CHECK-NEXT:    ret float [[KNOWN_ZERO]]
;
  %known.negative.or.nan = call float @returns_negative_or_nan()
  %known.zero = call float @returns_zero()
  %result = call float @llvm.maximumnum.f32(float %known.negative.or.nan, float %known.zero)
  ret float %result
}

define nofpclass(snan) float @only_zero__maximumnum__known_negative_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @only_zero__maximumnum__known_negative_or_nan() {
; CHECK-NEXT:    [[KNOWN_ZERO:%.*]] = call float @returns_zero()
; CHECK-NEXT:    [[KNOWN_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    ret float [[KNOWN_ZERO]]
;
  %known.zero = call float @returns_zero()
  %known.negative.or.nan = call float @returns_negative_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.zero, float %known.negative.or.nan)
  ret float %result
}

define nofpclass(snan) float @known_negative__maximumnum__only_nzero() {
; CHECK-LABEL: define nofpclass(snan) float @known_negative__maximumnum__only_nzero() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[KNOWN_NZERO:%.*]] = call float @returns_nzero()
; CHECK-NEXT:    ret float -0.000000e+00
;
  %known.negative = call float @returns_negative()
  %known.nzero = call float @returns_nzero()
  %result = call float @llvm.maximumnum.f32(float %known.negative, float %known.nzero)
  ret float %result
}

define nofpclass(snan) float @only_nzero__maximumnum__known_negative() {
; CHECK-LABEL: define nofpclass(snan) float @only_nzero__maximumnum__known_negative() {
; CHECK-NEXT:    [[KNOWN_NZERO:%.*]] = call float @returns_nzero()
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    ret float -0.000000e+00
;
  %known.nzero = call float @returns_nzero()
  %known.negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %known.nzero, float %known.negative)
  ret float %result
}

define nofpclass(snan) float @known_negative__maximumnum__only_nzero_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_negative__maximumnum__only_nzero_or_nan() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[KNOWN_NZERO_OR_NAN:%.*]] = call float @returns_nzero_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[KNOWN_NEGATIVE]], float [[KNOWN_NZERO_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.negative = call float @returns_negative()
  %known.nzero.or.nan = call float @returns_nzero_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.negative, float %known.nzero.or.nan)
  ret float %result
}

define nofpclass(snan) float @only_nzero_or_nan__maximumnum__known_negative() {
; CHECK-LABEL: define nofpclass(snan) float @only_nzero_or_nan__maximumnum__known_negative() {
; CHECK-NEXT:    [[KNOWN_NZERO_OR_NAN:%.*]] = call float @returns_nzero_or_nan()
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[KNOWN_NZERO_OR_NAN]], float [[KNOWN_NEGATIVE]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.nzero.or.nan = call float @returns_nzero_or_nan()
  %known.negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %known.nzero.or.nan, float %known.negative)
  ret float %result
}

define nofpclass(snan) float @known_negative__maximumnum__only_pzero() {
; CHECK-LABEL: define nofpclass(snan) float @known_negative__maximumnum__only_pzero() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[KNOWN_PZERO:%.*]] = call float @returns_pzero()
; CHECK-NEXT:    ret float 0.000000e+00
;
  %known.negative = call float @returns_negative()
  %known.pzero = call float @returns_pzero()
  %result = call float @llvm.maximumnum.f32(float %known.negative, float %known.pzero)
  ret float %result
}

define nofpclass(snan) float @only_pzero__maximumnum__known_negative() {
; CHECK-LABEL: define nofpclass(snan) float @only_pzero__maximumnum__known_negative() {
; CHECK-NEXT:    [[KNOWN_PZERO:%.*]] = call float @returns_pzero()
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    ret float 0.000000e+00
;
  %known.pzero = call float @returns_pzero()
  %known.negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %known.pzero, float %known.negative)
  ret float %result
}

define nofpclass(snan) float @known_negative__maximumnum__only_pzero_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_negative__maximumnum__only_pzero_or_nan() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[KNOWN_PZERO_OR_NAN:%.*]] = call float @returns_pzero_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_NEGATIVE]], float [[KNOWN_PZERO_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.negative = call float @returns_negative()
  %known.pzero.or.nan = call float @returns_pzero_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.negative, float %known.pzero.or.nan)
  ret float %result
}

define nofpclass(snan) float @only_pzero_or_nan__maximumnum__known_negative() {
; CHECK-LABEL: define nofpclass(snan) float @only_pzero_or_nan__maximumnum__known_negative() {
; CHECK-NEXT:    [[KNOWN_PZERO_OR_NAN:%.*]] = call float @returns_pzero_or_nan()
; CHECK-NEXT:    [[KNOWN_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_PZERO_OR_NAN]], float [[KNOWN_NEGATIVE]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.pzero.or.nan = call float @returns_pzero_or_nan()
  %known.negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %known.pzero.or.nan, float %known.negative)
  ret float %result
}

define nofpclass(pinf pnorm psub pzero) float @ret_always_negative_or_nan__unknown__maximumnum__select_always_negative_or_unknown(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(pinf pzero psub pnorm) float @ret_always_negative_or_nan__unknown__maximumnum__select_always_negative_or_unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN1]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative = call float @returns_negative()
  %select.rhs = select i1 %cond, float %always.negative, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %unknown1, float %select.rhs)
  ret float %result
}

define nofpclass(pinf pnorm psub pzero) float @ret_always_negative_or_nan__unknown__maximumnum__select_always_positive_or_unknown(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(pinf pzero psub pnorm) float @ret_always_negative_or_nan__unknown__maximumnum__select_always_positive_or_unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[ALWAYS_POSITIVE]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN1]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.positive = call float @returns_positive()
  %select.rhs = select i1 %cond, float %always.positive, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %unknown1, float %select.rhs)
  ret float %result
}

define nofpclass(pinf pnorm psub) float @ret_always_positive_nonzero__maximumnum__not_zero_select_positive_or_unknown(i1 %cond, float %unknown, float nofpclass(zero) %not.zero) {
; CHECK-LABEL: define nofpclass(pinf psub pnorm) float @ret_always_positive_nonzero__maximumnum__not_zero_select_positive_or_unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN:%.*]], float nofpclass(zero) [[NOT_ZERO:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[ALWAYS_POSITIVE]], float [[UNKNOWN]]
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_ZERO]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.positive = call float @returns_positive()
  %select.rhs = select i1 %cond, float %always.positive, float %unknown
  %result = call float @llvm.maximumnum.f32(float %not.zero, float %select.rhs)
  ret float %result
}

define nofpclass(pinf pnorm psub) float @ret_always_positive_nonzero__maximumnum__not_zero_select_negative_or_unknown(i1 %cond, float %unknown, float nofpclass(zero) %not.zero) {
; CHECK-LABEL: define nofpclass(pinf psub pnorm) float @ret_always_positive_nonzero__maximumnum__not_zero_select_negative_or_unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN:%.*]], float nofpclass(zero) [[NOT_ZERO:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NEGATIVE]], float [[UNKNOWN]]
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_ZERO]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.negative = call float @returns_negative()
  %select.rhs = select i1 %cond, float %always.negative, float %unknown
  %result = call float @llvm.maximumnum.f32(float %not.zero, float %select.rhs)
  ret float %result
}

define nofpclass(snan) float @known_positive__maximumnum__only_pzero_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_positive__maximumnum__only_pzero_or_nan() {
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[KNOWN_PZERO_OR_NAN:%.*]] = call float @returns_pzero_or_nan()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.positive = call float @returns_positive()
  %known.pzero.or.nan = call float @returns_pzero_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.positive, float %known.pzero.or.nan)
  ret float %result
}

define nofpclass(nan) float @ret_nonan__known_negative_or_nan__maximumnum__known_positive_or_nan() {
; CHECK-LABEL: define nofpclass(nan) float @ret_nonan__known_negative_or_nan__maximumnum__known_positive_or_nan() {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[MUST_BE_NEGATIVE_OR_NAN]], float [[MUST_BE_POSITIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative.or.nan = call float @returns_negative_or_nan()
  %must.be.positive.or.nan = call float @returns_positive_or_nan()
  %result = call float @llvm.maximumnum.f32(float %must.be.negative.or.nan, float %must.be.positive.or.nan)
  ret float %result
}

define nofpclass(nan) float @ret_nonan__known_positive_or_nan__maximumnum__known_negative_or_nan() {
; CHECK-LABEL: define nofpclass(nan) float @ret_nonan__known_positive_or_nan__maximumnum__known_negative_or_nan() {
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[MUST_BE_POSITIVE_OR_NAN]], float [[MUST_BE_NEGATIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.positive.or.nan = call float @returns_positive_or_nan()
  %must.be.negative.or.nan = call float @returns_negative_or_nan()
  %result = call float @llvm.maximumnum.f32(float %must.be.positive.or.nan, float %must.be.negative.or.nan)
  ret float %result
}

define nofpclass(nan) float @ret_nonan__select_nan_or_unknown__maximumnum__unknown(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(nan) float @ret_nonan__select_nan_or_unknown__maximumnum__unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NAN:%.*]] = call float @returns_nan()
; CHECK-NEXT:    [[SELECT_LHS:%.*]] = select i1 [[COND]], float [[ALWAYS_NAN]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[SELECT_LHS]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.nan = call float @returns_nan()
  %select.lhs = select i1 %cond, float %always.nan, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %select.lhs, float %unknown1)
  ret float %result
}

define nofpclass(nan) float @ret_nonan__unknown__maximumnum__select_nan_or_unknown(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(nan) float @ret_nonan__unknown__maximumnum__select_nan_or_unknown(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[ALWAYS_NAN:%.*]] = call float @returns_nan()
; CHECK-NEXT:    [[SELECT_RHS:%.*]] = select i1 [[COND]], float [[UNKNOWN0]], float [[ALWAYS_NAN]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN1]], float [[SELECT_RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %always.nan = call float @returns_nan()
  %select.rhs = select i1 %cond, float %unknown0, float %always.nan
  %result = call float @llvm.maximumnum.f32(float %unknown1, float %select.rhs)
  ret float %result
}

define nofpclass(ninf nnorm nsub nzero) float @result_known_positive_or_nan__known_positive__maximumnum__not_nan(float nofpclass(ninf nnorm nsub nzero) %lhs, float nofpclass(nan) %rhs) {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float @result_known_positive_or_nan__known_positive__maximumnum__not_nan(
; CHECK-SAME: float nofpclass(ninf nzero nsub nnorm) [[LHS:%.*]], float nofpclass(nan) [[RHS:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[LHS]], float [[RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %lhs, float %rhs)
  ret float %result
}

define nofpclass(ninf nnorm nsub nzero) float @result_known_positive_or_nan__not_nan__maximumnum__known_positive(float nofpclass(nan) %lhs, float nofpclass(ninf nnorm nsub nzero) %rhs) {
; CHECK-LABEL: define nofpclass(ninf nzero nsub nnorm) float @result_known_positive_or_nan__not_nan__maximumnum__known_positive(
; CHECK-SAME: float nofpclass(nan) [[LHS:%.*]], float nofpclass(ninf nzero nsub nnorm) [[RHS:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[LHS]], float [[RHS]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %lhs, float %rhs)
  ret float %result
}

define nofpclass(snan) float @known_always_positive__maximumnum__known_always_negative_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_always_positive__maximumnum__known_always_negative_or_nan() {
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[KNOWN_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.positive = call float @returns_positive()
  %known.negative.or.nan = call float @returns_negative_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.positive, float %known.negative.or.nan)
  ret float %result
}

define nofpclass(snan) float @known_always_negative_or_nan__maximumnum__known_always_positive() {
; CHECK-LABEL: define nofpclass(snan) float @known_always_negative_or_nan__maximumnum__known_always_positive() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[KNOWN_POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    ret float [[KNOWN_POSITIVE]]
;
  %known.negative.or.nan = call float @returns_negative_or_nan()
  %known.positive = call float @returns_positive()
  %result = call float @llvm.maximumnum.f32(float %known.negative.or.nan, float %known.positive)
  ret float %result
}

define nofpclass(snan) float @known_always_positive_or_nan__maximumnum__known_always_negative_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_always_positive_or_nan__maximumnum__known_always_negative_or_nan() {
; CHECK-NEXT:    [[KNOWN_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[KNOWN_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_POSITIVE_OR_NAN]], float [[KNOWN_NEGATIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.positive.or.nan = call float @returns_positive_or_nan()
  %known.negative.or.nan = call float @returns_negative_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.positive.or.nan, float %known.negative.or.nan)
  ret float %result
}

define nofpclass(snan) float @known_always_negative_or_nan__maximumnum__known_always_positive_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @known_always_negative_or_nan__maximumnum__known_always_positive_or_nan() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[KNOWN_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_NEGATIVE_OR_NAN]], float [[KNOWN_POSITIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.negative.or.nan = call float @returns_negative_or_nan()
  %known.positive.or.nan = call float @returns_positive_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.negative.or.nan, float %known.positive.or.nan)
  ret float %result
}

define nofpclass(nan) float @ret_no_nan__known_always_positive_or_nan__maximumnum__known_always_negative_or_nan() {
; CHECK-LABEL: define nofpclass(nan) float @ret_no_nan__known_always_positive_or_nan__maximumnum__known_always_negative_or_nan() {
; CHECK-NEXT:    [[KNOWN_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[KNOWN_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_POSITIVE_OR_NAN]], float [[KNOWN_NEGATIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.positive.or.nan = call float @returns_positive_or_nan()
  %known.negative.or.nan = call float @returns_negative_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.positive.or.nan, float %known.negative.or.nan)
  ret float %result
}

define nofpclass(nan) float @ret_no_nan__known_always_negative_or_nan__maximumnum__known_always_positive_or_nan() {
; CHECK-LABEL: define nofpclass(nan) float @ret_no_nan__known_always_negative_or_nan__maximumnum__known_always_positive_or_nan() {
; CHECK-NEXT:    [[KNOWN_NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[KNOWN_POSITIVE_OR_NAN:%.*]] = call float @returns_positive_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[KNOWN_NEGATIVE_OR_NAN]], float [[KNOWN_POSITIVE_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %known.negative.or.nan = call float @returns_negative_or_nan()
  %known.positive.or.nan = call float @returns_positive_or_nan()
  %result = call float @llvm.maximumnum.f32(float %known.negative.or.nan, float %known.positive.or.nan)
  ret float %result
}

define nofpclass(snan) float @pinf__maximumnum__unknown(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @pinf__maximumnum__unknown(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[PINF:%.*]] = call float @returns_pinf()
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %pinf = call float @returns_pinf()
  %result = call float @llvm.maximumnum.f32(float %pinf, float %unknown)
  ret float %result
}

define nofpclass(snan) float @unknown__maximumnum__pinf(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__maximumnum__pinf(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[PINF:%.*]] = call float @returns_pinf()
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %pinf = call float @returns_pinf()
  %result = call float @llvm.maximumnum.f32(float %unknown, float %pinf)
  ret float %result
}

define nofpclass(snan) float @pinf_or_nan__maximumnum__unknown(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @pinf_or_nan__maximumnum__unknown(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[PINF_OR_NAN:%.*]] = call float @returns_pinf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[PINF_OR_NAN]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %pinf.or.nan = call float @returns_pinf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %pinf.or.nan, float %unknown)
  ret float %result
}

define nofpclass(snan) float @unknown__maximumnum__pinf_or_nan(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__maximumnum__pinf_or_nan(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[PINF_OR_NAN:%.*]] = call float @returns_pinf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[PINF_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %pinf.or.nan = call float @returns_pinf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %unknown, float %pinf.or.nan)
  ret float %result
}

define nofpclass(snan) float @ninf__maximumnum__unknown(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @ninf__maximumnum__unknown(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[NINF:%.*]] = call float @returns_ninf()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float 0xFFF0000000000000)
; CHECK-NEXT:    ret float [[RESULT]]
;
  %ninf = call float @returns_ninf()
  %result = call float @llvm.maximumnum.f32(float %ninf, float %unknown)
  ret float %result
}

define nofpclass(snan) float @unknown__maximumnum__ninf(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__maximumnum__ninf(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[NINF:%.*]] = call float @returns_ninf()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float 0xFFF0000000000000)
; CHECK-NEXT:    ret float [[RESULT]]
;
  %ninf = call float @returns_ninf()
  %result = call float @llvm.maximumnum.f32(float %unknown, float %ninf)
  ret float %result
}

define nofpclass(snan) float @ninf_or_nan__maximumnum__unknown(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @ninf_or_nan__maximumnum__unknown(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[NINF_OR_NAN:%.*]] = call float @returns_ninf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NINF_OR_NAN]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %ninf.or.nan = call float @returns_ninf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %ninf.or.nan, float %unknown)
  ret float %result
}

define nofpclass(snan) float @unknown__maximumnum__ninf_or_nan(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__maximumnum__ninf_or_nan(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[NINF_OR_NAN:%.*]] = call float @returns_ninf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[NINF_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %ninf.or.nan = call float @returns_ninf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %unknown, float %ninf.or.nan)
  ret float %result
}

define nofpclass(snan) float @inf__maximumnum__unknown(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @inf__maximumnum__unknown(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[INF:%.*]] = call float @returns_inf()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[INF]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %inf = call float @returns_inf()
  %result = call float @llvm.maximumnum.f32(float %inf, float %unknown)
  ret float %result
}

define nofpclass(snan) float @unknown__maximumnum__inf(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__maximumnum__inf(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[INF:%.*]] = call float @returns_inf()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[INF]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %inf = call float @returns_inf()
  %result = call float @llvm.maximumnum.f32(float %unknown, float %inf)
  ret float %result
}

define nofpclass(snan) float @inf_or_nan__maximumnum__unknown(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @inf_or_nan__maximumnum__unknown(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[INF_OR_NAN:%.*]] = call float @returns_inf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[INF_OR_NAN]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %inf.or.nan = call float @returns_inf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %inf.or.nan, float %unknown)
  ret float %result
}

define nofpclass(snan) float @unknown__maximumnum__inf_or_nan(float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__maximumnum__inf_or_nan(
; CHECK-SAME: float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[INF_OR_NAN:%.*]] = call float @returns_inf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[INF_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %inf.or.nan = call float @returns_inf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %unknown, float %inf.or.nan)
  ret float %result
}

define nofpclass(snan) float @ninf_or_nan__maximumnum__not_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @ninf_or_nan__maximumnum__not_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[NINF_OR_NAN:%.*]] = call float @returns_ninf_or_nan()
; CHECK-NEXT:    ret float [[NOT_NAN]]
;
  %ninf.or.nan = call float @returns_ninf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %ninf.or.nan, float %not.nan)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum__ninf_or_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum__ninf_or_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[NINF_OR_NAN:%.*]] = call float @returns_ninf_or_nan()
; CHECK-NEXT:    ret float [[NOT_NAN]]
;
  %ninf.or.nan = call float @returns_ninf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %not.nan, float %ninf.or.nan)
  ret float %result
}

define nofpclass(snan) float @pinf_or_nan__maximumnum__not_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @pinf_or_nan__maximumnum__not_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[PINF_OR_NAN:%.*]] = call float @returns_pinf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[PINF_OR_NAN]], float [[NOT_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %pinf.or.nan = call float @returns_pinf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %pinf.or.nan, float %not.nan)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum__pinf_or_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum__pinf_or_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[PINF_OR_NAN:%.*]] = call float @returns_pinf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_NAN]], float [[PINF_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %pinf.or.nan = call float @returns_pinf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %not.nan, float %pinf.or.nan)
  ret float %result
}

define nofpclass(snan) float @inf_or_nan__maximumnum__not_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @inf_or_nan__maximumnum__not_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[INF_OR_NAN:%.*]] = call float @returns_inf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[INF_OR_NAN]], float [[NOT_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %inf.or.nan = call float @returns_inf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %inf.or.nan, float %not.nan)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum__inf_or_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum__inf_or_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[INF_OR_NAN:%.*]] = call float @returns_inf_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NOT_NAN]], float [[INF_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %inf.or.nan = call float @returns_inf_or_nan()
  %result = call float @llvm.maximumnum.f32(float %not.nan, float %inf.or.nan)
  ret float %result
}

define nofpclass(snan) float @ninf__maximumnum__not_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @ninf__maximumnum__not_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[NINF_OR_NAN:%.*]] = call float @returns_ninf()
; CHECK-NEXT:    ret float [[NOT_NAN]]
;
  %ninf.or.nan = call float @returns_ninf()
  %result = call float @llvm.maximumnum.f32(float %ninf.or.nan, float %not.nan)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum__ninf(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum__ninf(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[NINF_OR_NAN:%.*]] = call float @returns_ninf()
; CHECK-NEXT:    ret float [[NOT_NAN]]
;
  %ninf.or.nan = call float @returns_ninf()
  %result = call float @llvm.maximumnum.f32(float %not.nan, float %ninf.or.nan)
  ret float %result
}

define nofpclass(snan) float @pinf__maximumnum__not_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @pinf__maximumnum__not_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[PINF_OR_NAN:%.*]] = call float @returns_pinf()
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %pinf.or.nan = call float @returns_pinf()
  %result = call float @llvm.maximumnum.f32(float %pinf.or.nan, float %not.nan)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum__pinf(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum__pinf(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[PINF_OR_NAN:%.*]] = call float @returns_pinf()
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %pinf.or.nan = call float @returns_pinf()
  %result = call float @llvm.maximumnum.f32(float %not.nan, float %pinf.or.nan)
  ret float %result
}

define nofpclass(snan) float @inf__maximumnum__not_nan(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @inf__maximumnum__not_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[INF_OR_NAN:%.*]] = call float @returns_inf()
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan nsz float @llvm.maximumnum.f32(float [[INF_OR_NAN]], float [[NOT_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %inf.or.nan = call float @returns_inf()
  %result = call float @llvm.maximumnum.f32(float %inf.or.nan, float %not.nan)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum__inf(float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum__inf(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[INF_OR_NAN:%.*]] = call float @returns_inf()
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan nsz float @llvm.maximumnum.f32(float [[NOT_NAN]], float [[INF_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %inf.or.nan = call float @returns_inf()
  %result = call float @llvm.maximumnum.f32(float %not.nan, float %inf.or.nan)
  ret float %result
}

define nofpclass(nan) float @ret_no_nans__noundef_call_attr(float %x, float %y) {
; CHECK-LABEL: define nofpclass(nan) float @ret_no_nans__noundef_call_attr(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call noundef float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(snan) float @not_nan__noundef_maximumnum__unknown(float nofpclass(nan) %not.nan, float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__noundef_maximumnum__unknown(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN:%.*]], float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call noundef float @llvm.maximumnum.f32(float [[NOT_NAN]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %not.nan, float %unknown)
  ret float %result
}

define nofpclass(snan) float @unknown__noundef_maximumnum__not_nan(float %unknown, float nofpclass(nan) %not.nan) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__noundef_maximumnum__not_nan(
; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(nan) [[NOT_NAN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call noundef float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[NOT_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %unknown, float %not.nan)
  ret float %result
}

define nofpclass(snan) float @not_nan__noundef_maximumnum__not_nan(float nofpclass(nan) %not.nan0, float nofpclass(nan) %not.nan1) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__noundef_maximumnum__not_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN0:%.*]], float nofpclass(nan) [[NOT_NAN1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan float @llvm.maximumnum.f32(float [[NOT_NAN0]], float [[NOT_NAN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %not.nan0, float %not.nan1)
  ret float %result
}

define nofpclass(snan) float @not_inf__noundef_maximumnum__unknown(float nofpclass(inf) %not.inf, float %unknown) {
; CHECK-LABEL: define nofpclass(snan) float @not_inf__noundef_maximumnum__unknown(
; CHECK-SAME: float nofpclass(inf) [[NOT_INF:%.*]], float [[UNKNOWN:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call noundef float @llvm.maximumnum.f32(float [[NOT_INF]], float [[UNKNOWN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %not.inf, float %unknown)
  ret float %result
}

define nofpclass(snan) float @unknown__noundef_maximumnum__not_inf(float %unknown, float nofpclass(inf) %not.inf) {
; CHECK-LABEL: define nofpclass(snan) float @unknown__noundef_maximumnum__not_inf(
; CHECK-SAME: float [[UNKNOWN:%.*]], float nofpclass(inf) [[NOT_INF:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call noundef float @llvm.maximumnum.f32(float [[UNKNOWN]], float [[NOT_INF]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %unknown, float %not.inf)
  ret float %result
}

define nofpclass(snan) float @not_snan__noundef_maximumnum__not_inf(float nofpclass(inf) %not.inf0, float nofpclass(inf) %not.inf1) {
; CHECK-LABEL: define nofpclass(snan) float @not_snan__noundef_maximumnum__not_inf(
; CHECK-SAME: float nofpclass(inf) [[NOT_INF0:%.*]], float nofpclass(inf) [[NOT_INF1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call noundef float @llvm.maximumnum.f32(float [[NOT_INF0]], float [[NOT_INF1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %not.inf0, float %not.inf1)
  ret float %result
}

define nofpclass(inf) float @ret_no_infs_noundef_call_attr(float %x, float %y) {
; CHECK-LABEL: define nofpclass(inf) float @ret_no_infs_noundef_call_attr(
; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call noundef float @llvm.maximumnum.f32(float [[X]], float [[Y]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %x, float %y)
  ret float %result
}

define nofpclass(inf) float @not_inf__noundef_maximumnum__not_inf(float nofpclass(inf) %not.inf0, float nofpclass(inf) %not.inf1) {
; CHECK-LABEL: define nofpclass(inf) float @not_inf__noundef_maximumnum__not_inf(
; CHECK-SAME: float nofpclass(inf) [[NOT_INF0:%.*]], float nofpclass(inf) [[NOT_INF1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call noundef float @llvm.maximumnum.f32(float [[NOT_INF0]], float [[NOT_INF1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call noundef float @llvm.maximumnum.f32(float %not.inf0, float %not.inf1)
  ret float %result
}

define nofpclass(snan) float @not_nan__maximumnum_noundef_md__not_nan(float nofpclass(nan) %not.nan0, float nofpclass(nan) %not.nan1) {
; CHECK-LABEL: define nofpclass(snan) float @not_nan__maximumnum_noundef_md__not_nan(
; CHECK-SAME: float nofpclass(nan) [[NOT_NAN0:%.*]], float nofpclass(nan) [[NOT_NAN1:%.*]]) {
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan float @llvm.maximumnum.f32(float [[NOT_NAN0]], float [[NOT_NAN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %result = call float @llvm.maximumnum.f32(float %not.nan0, float %not.nan1), !noundef !0, !unknown.md !0
  ret float %result
}

define nofpclass(snan) float @select_is_positive_or_0__maximumnum__nnorm_0(float noundef %arg) {
; CHECK-LABEL: define nofpclass(snan) float @select_is_positive_or_0__maximumnum__nnorm_0(
; CHECK-SAME: float noundef [[ARG:%.*]]) {
; CHECK-NEXT:    [[IS_POS_OR_ZERO:%.*]] = fcmp oge float [[ARG]], 0.000000e+00
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[IS_POS_OR_ZERO]], float [[ARG]], float 0.000000e+00
; CHECK-NEXT:    [[NNORM:%.*]] = call float @returns_nnorm()
; CHECK-NEXT:    ret float [[SELECT]]
;
  %is.pos.or.zero = fcmp oge float %arg, 0.0
  %select = select i1 %is.pos.or.zero, float %arg, float 0.0
  %nnorm = call float @returns_nnorm()
  %result = call float @llvm.maximumnum.f32(float %select, float %nnorm)
  ret float %result
}

define nofpclass(snan) float @select_is_positive_or_0__maximumnum__nnorm_1(float noundef %arg) {
; CHECK-LABEL: define nofpclass(snan) float @select_is_positive_or_0__maximumnum__nnorm_1(
; CHECK-SAME: float noundef [[ARG:%.*]]) {
; CHECK-NEXT:    [[NNORM:%.*]] = call float @returns_nnorm()
; CHECK-NEXT:    [[IS_POS_OR_ZERO:%.*]] = fcmp oge float [[ARG]], 0.000000e+00
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[IS_POS_OR_ZERO]], float [[ARG]], float 0.000000e+00
; CHECK-NEXT:    ret float [[SELECT]]
;
  %nnorm = call float @returns_nnorm()
  %is.pos.or.zero = fcmp oge float %arg, 0.0
  %select = select i1 %is.pos.or.zero, float %arg, float 0.0
  %result = call float @llvm.maximumnum.f32(float %nnorm, float %select)
  ret float %result
}

define nofpclass(snan) float @select_is_positive_or_0__maximumnum__nnorm_or_nan_0(float noundef %arg) {
; CHECK-LABEL: define nofpclass(snan) float @select_is_positive_or_0__maximumnum__nnorm_or_nan_0(
; CHECK-SAME: float noundef [[ARG:%.*]]) {
; CHECK-NEXT:    [[IS_POS_OR_ZERO:%.*]] = fcmp oge float [[ARG]], 0.000000e+00
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[IS_POS_OR_ZERO]], float [[ARG]], float 0.000000e+00
; CHECK-NEXT:    [[NNORM_OR_NAN:%.*]] = call float @returns_nnorm_or_nan()
; CHECK-NEXT:    ret float [[SELECT]]
;
  %is.pos.or.zero = fcmp oge float %arg, 0.0
  %select = select i1 %is.pos.or.zero, float %arg, float 0.0
  %nnorm.or.nan = call float @returns_nnorm_or_nan()
  %result = call float @llvm.maximumnum.f32(float %select, float %nnorm.or.nan)
  ret float %result
}

define nofpclass(snan) float @select_is_positive_or_0__maximumnum__nnorm_or_nan_1(float noundef %arg) {
; CHECK-LABEL: define nofpclass(snan) float @select_is_positive_or_0__maximumnum__nnorm_or_nan_1(
; CHECK-SAME: float noundef [[ARG:%.*]]) {
; CHECK-NEXT:    [[NNORM_OR_NAN:%.*]] = call float @returns_nnorm_or_nan()
; CHECK-NEXT:    [[IS_POS_OR_ZERO:%.*]] = fcmp oge float [[ARG]], 0.000000e+00
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[IS_POS_OR_ZERO]], float [[ARG]], float 0.000000e+00
; CHECK-NEXT:    ret float [[SELECT]]
;
  %nnorm.or.nan = call float @returns_nnorm_or_nan()
  %is.pos.or.zero = fcmp oge float %arg, 0.0
  %select = select i1 %is.pos.or.zero, float %arg, float 0.0
  %result = call float @llvm.maximumnum.f32(float %nnorm.or.nan, float %select)
  ret float %result
}

define nofpclass(snan) float @select_is_positive_or_0__maximumnum__negative(float noundef %arg) {
; CHECK-LABEL: define nofpclass(snan) float @select_is_positive_or_0__maximumnum__negative(
; CHECK-SAME: float noundef [[ARG:%.*]]) {
; CHECK-NEXT:    [[IS_POS_OR_ZERO:%.*]] = fcmp oge float [[ARG]], 0.000000e+00
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[IS_POS_OR_ZERO]], float [[ARG]], float 0.000000e+00
; CHECK-NEXT:    [[NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    ret float [[SELECT]]
;
  %is.pos.or.zero = fcmp oge float %arg, 0.0
  %select = select i1 %is.pos.or.zero, float %arg, float 0.0
  %negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %select, float %negative)
  ret float %result
}

define nofpclass(snan) float @negative__maximumnum__select_is_positive_or_0(float noundef %arg) {
; CHECK-LABEL: define nofpclass(snan) float @negative__maximumnum__select_is_positive_or_0(
; CHECK-SAME: float noundef [[ARG:%.*]]) {
; CHECK-NEXT:    [[NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[IS_POS_OR_ZERO:%.*]] = fcmp oge float [[ARG]], 0.000000e+00
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[IS_POS_OR_ZERO]], float [[ARG]], float 0.000000e+00
; CHECK-NEXT:    ret float [[SELECT]]
;
  %negative = call float @returns_negative()
  %is.pos.or.zero = fcmp oge float %arg, 0.0
  %select = select i1 %is.pos.or.zero, float %arg, float 0.0
  %result = call float @llvm.maximumnum.f32(float %negative, float %select)
  ret float %result
}

define nofpclass(snan) float @select_is_positive_or_0__maximumnum__negative_or_zero(float noundef %arg) {
; CHECK-LABEL: define nofpclass(snan) float @select_is_positive_or_0__maximumnum__negative_or_zero(
; CHECK-SAME: float noundef [[ARG:%.*]]) {
; CHECK-NEXT:    [[IS_POS_OR_ZERO:%.*]] = fcmp oge float [[ARG]], 0.000000e+00
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[IS_POS_OR_ZERO]], float [[ARG]], float 0.000000e+00
; CHECK-NEXT:    [[NEGATIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan float @llvm.maximumnum.f32(float [[SELECT]], float [[NEGATIVE_OR_ZERO]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %is.pos.or.zero = fcmp oge float %arg, 0.0
  %select = select i1 %is.pos.or.zero, float %arg, float 0.0
  %negative.or.zero = call float @returns_negative_or_zero()
  %result = call float @llvm.maximumnum.f32(float %select, float %negative.or.zero)
  ret float %result
}

define nofpclass(snan) float @negative_or_zero__maximumnum__select_is_positive_or_0(float noundef %arg) {
; CHECK-LABEL: define nofpclass(snan) float @negative_or_zero__maximumnum__select_is_positive_or_0(
; CHECK-SAME: float noundef [[ARG:%.*]]) {
; CHECK-NEXT:    [[NEGATIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[IS_POS_OR_ZERO:%.*]] = fcmp oge float [[ARG]], 0.000000e+00
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[IS_POS_OR_ZERO]], float [[ARG]], float 0.000000e+00
; CHECK-NEXT:    [[RESULT:%.*]] = call nnan float @llvm.maximumnum.f32(float [[NEGATIVE_OR_ZERO]], float [[SELECT]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %negative.or.zero = call float @returns_negative_or_zero()
  %is.pos.or.zero = fcmp oge float %arg, 0.0
  %select = select i1 %is.pos.or.zero, float %arg, float 0.0
  %result = call float @llvm.maximumnum.f32(float %negative.or.zero, float %select)
  ret float %result
}

define nofpclass(snan) float @negative_or_zero__maximumnum__positive() {
; CHECK-LABEL: define nofpclass(snan) float @negative_or_zero__maximumnum__positive() {
; CHECK-NEXT:    [[NEG_NONZERO:%.*]] = call float @returns_negative_nonzero()
; CHECK-NEXT:    [[POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    ret float [[POSITIVE]]
;
  %neg.nonzero = call float @returns_negative_nonzero()
  %positive = call float @returns_positive()
  %result = call float @llvm.maximumnum.f32(float %neg.nonzero, float %positive)
  ret float %result
}

define nofpclass(snan) float @positive__maximumnum__negative_or_zero() {
; CHECK-LABEL: define nofpclass(snan) float @positive__maximumnum__negative_or_zero() {
; CHECK-NEXT:    [[POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[NEG_NONZERO:%.*]] = call float @returns_negative_nonzero()
; CHECK-NEXT:    ret float [[POSITIVE]]
;
  %positive = call float @returns_positive()
  %neg.nonzero = call float @returns_negative_nonzero()
  %result = call float @llvm.maximumnum.f32(float %positive, float %neg.nonzero)
  ret float %result
}

define nofpclass(snan) float @negative_or_zero__maximumnum__positive_or_zero() {
; CHECK-LABEL: define nofpclass(snan) float @negative_or_zero__maximumnum__positive_or_zero() {
; CHECK-NEXT:    [[NEG_NONZERO:%.*]] = call float @returns_negative_nonzero()
; CHECK-NEXT:    [[POSITIVE_OR_ZERO:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    ret float [[POSITIVE_OR_ZERO]]
;
  %neg.nonzero = call float @returns_negative_nonzero()
  %positive.or.zero = call float @returns_positive_or_zero()
  %result = call float @llvm.maximumnum.f32(float %neg.nonzero, float %positive.or.zero)
  ret float %result
}

define nofpclass(snan) float @positive_or_zero__maximumnum__negative_or_zero() {
; CHECK-LABEL: define nofpclass(snan) float @positive_or_zero__maximumnum__negative_or_zero() {
; CHECK-NEXT:    [[POSITIVE_OR_ZERO:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    [[NEG_NONZERO:%.*]] = call float @returns_negative_nonzero()
; CHECK-NEXT:    ret float [[POSITIVE_OR_ZERO]]
;
  %positive.or.zero = call float @returns_positive_or_zero()
  %neg.nonzero = call float @returns_negative_nonzero()
  %result = call float @llvm.maximumnum.f32(float %positive.or.zero, float %neg.nonzero)
  ret float %result
}

define nofpclass(snan) float @positive_or_zero__maximumnum__negative() {
; CHECK-LABEL: define nofpclass(snan) float @positive_or_zero__maximumnum__negative() {
; CHECK-NEXT:    [[POS_NONZERO:%.*]] = call float @returns_positive_nonzero()
; CHECK-NEXT:    [[NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    ret float [[POS_NONZERO]]
;
  %pos.nonzero = call float @returns_positive_nonzero()
  %negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %pos.nonzero, float %negative)
  ret float %result
}

define nofpclass(snan) float @negative__maximumnum__positive_or_zero() {
; CHECK-LABEL: define nofpclass(snan) float @negative__maximumnum__positive_or_zero() {
; CHECK-NEXT:    [[NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[POS_NONZERO:%.*]] = call float @returns_positive_nonzero()
; CHECK-NEXT:    ret float [[POS_NONZERO]]
;
  %negative = call float @returns_negative()
  %pos.nonzero = call float @returns_positive_nonzero()
  %result = call float @llvm.maximumnum.f32(float %negative, float %pos.nonzero)
  ret float %result
}

define nofpclass(snan) float @positive_or_zero__maximumnum__negative_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @positive_or_zero__maximumnum__negative_or_nan() {
; CHECK-NEXT:    [[POS_NONZERO:%.*]] = call float @returns_positive_nonzero()
; CHECK-NEXT:    [[NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    ret float [[POS_NONZERO]]
;
  %pos.nonzero = call float @returns_positive_nonzero()
  %negative.or.nan = call float @returns_negative_or_nan()
  %result = call float @llvm.maximumnum.f32(float %pos.nonzero, float %negative.or.nan)
  ret float %result
}

define nofpclass(snan) float @negative_or_nan__maximumnum__positive_or_zero() {
; CHECK-LABEL: define nofpclass(snan) float @negative_or_nan__maximumnum__positive_or_zero() {
; CHECK-NEXT:    [[NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[POS_NONZERO:%.*]] = call float @returns_positive_nonzero()
; CHECK-NEXT:    ret float [[POS_NONZERO]]
;
  %negative.or.nan = call float @returns_negative_or_nan()
  %pos.nonzero = call float @returns_positive_nonzero()
  %result = call float @llvm.maximumnum.f32(float %negative.or.nan, float %pos.nonzero)
  ret float %result
}

define nofpclass(snan) float @positive_or_zero_or_nan__maximumnum__negative() {
; CHECK-LABEL: define nofpclass(snan) float @positive_or_zero_or_nan__maximumnum__negative() {
; CHECK-NEXT:    [[POS_NONZERO_OR_NAN:%.*]] = call float @returns_positive_nonzero_or_nan()
; CHECK-NEXT:    [[NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[POS_NONZERO_OR_NAN]], float [[NEGATIVE]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %pos.nonzero.or.nan = call float @returns_positive_nonzero_or_nan()
  %negative = call float @returns_negative()
  %result = call float @llvm.maximumnum.f32(float %pos.nonzero.or.nan, float %negative)
  ret float %result
}

define nofpclass(snan) float @negative__maximumnum__positive_or_zero_or_nan() {
; CHECK-LABEL: define nofpclass(snan) float @negative__maximumnum__positive_or_zero_or_nan() {
; CHECK-NEXT:    [[NEGATIVE:%.*]] = call float @returns_negative()
; CHECK-NEXT:    [[POS_NONZERO_OR_NAN:%.*]] = call float @returns_positive_nonzero_or_nan()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[NEGATIVE]], float [[POS_NONZERO_OR_NAN]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %negative = call float @returns_negative()
  %pos.nonzero.or.nan = call float @returns_positive_nonzero_or_nan()
  %result = call float @llvm.maximumnum.f32(float %negative, float %pos.nonzero.or.nan)
  ret float %result
}

define nofpclass(snan) float @known_pnorm__maximumnum__known_psub() {
; CHECK-LABEL: define nofpclass(snan) float @known_pnorm__maximumnum__known_psub() {
; CHECK-NEXT:    [[PNORM:%.*]] = call float @returns_pnorm()
; CHECK-NEXT:    [[PSUB:%.*]] = call float @returns_psub()
; CHECK-NEXT:    ret float [[PNORM]]
;
  %pnorm = call float @returns_pnorm()
  %psub = call float @returns_psub()
  %result = call float @llvm.maximumnum.f32(float %pnorm, float %psub)
  ret float %result
}

define nofpclass(snan) float @known_psub__maximumnum__known_pnorm() {
; CHECK-LABEL: define nofpclass(snan) float @known_psub__maximumnum__known_pnorm() {
; CHECK-NEXT:    [[PSUB:%.*]] = call float @returns_psub()
; CHECK-NEXT:    [[PNORM:%.*]] = call float @returns_pnorm()
; CHECK-NEXT:    ret float [[PNORM]]
;
  %psub = call float @returns_psub()
  %pnorm = call float @returns_pnorm()
  %result = call float @llvm.maximumnum.f32(float %psub, float %pnorm)
  ret float %result
}

define nofpclass(snan) float @known_pinf__maximumnum__known_psub() {
; CHECK-LABEL: define nofpclass(snan) float @known_pinf__maximumnum__known_psub() {
; CHECK-NEXT:    [[PINF:%.*]] = call float @returns_pinf()
; CHECK-NEXT:    [[PSUB:%.*]] = call float @returns_psub()
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %pinf = call float @returns_pinf()
  %psub = call float @returns_psub()
  %result = call float @llvm.maximumnum.f32(float %pinf, float %psub)
  ret float %result
}

define nofpclass(snan) float @known_psub__maximumnum__known_pinf() {
; CHECK-LABEL: define nofpclass(snan) float @known_psub__maximumnum__known_pinf() {
; CHECK-NEXT:    [[PSUB:%.*]] = call float @returns_psub()
; CHECK-NEXT:    [[PINF:%.*]] = call float @returns_pinf()
; CHECK-NEXT:    ret float 0x7FF0000000000000
;
  %psub = call float @returns_psub()
  %pinf = call float @returns_pinf()
  %result = call float @llvm.maximumnum.f32(float %psub, float %pinf)
  ret float %result
}

define nofpclass(snan) float @known_nnorm__maximumnum__known_nsub() {
; CHECK-LABEL: define nofpclass(snan) float @known_nnorm__maximumnum__known_nsub() {
; CHECK-NEXT:    [[NNORM:%.*]] = call float @returns_nnorm()
; CHECK-NEXT:    [[NSUB:%.*]] = call float @returns_nsub()
; CHECK-NEXT:    ret float [[NSUB]]
;
  %nnorm = call float @returns_nnorm()
  %nsub = call float @returns_nsub()
  %result = call float @llvm.maximumnum.f32(float %nnorm, float %nsub)
  ret float %result
}

define nofpclass(snan) float @known_nsub__maximumnum__known_nnorm() {
; CHECK-LABEL: define nofpclass(snan) float @known_nsub__maximumnum__known_nnorm() {
; CHECK-NEXT:    [[NSUB:%.*]] = call float @returns_nsub()
; CHECK-NEXT:    [[NNORM:%.*]] = call float @returns_nnorm()
; CHECK-NEXT:    ret float [[NSUB]]
;
  %nsub = call float @returns_nsub()
  %nnorm = call float @returns_nnorm()
  %result = call float @llvm.maximumnum.f32(float %nsub, float %nnorm)
  ret float %result
}

define nofpclass(snan) float @known_ninf__maximumnum__known_nsub() {
; CHECK-LABEL: define nofpclass(snan) float @known_ninf__maximumnum__known_nsub() {
; CHECK-NEXT:    [[NINF:%.*]] = call float @returns_ninf()
; CHECK-NEXT:    [[NSUB:%.*]] = call float @returns_nsub()
; CHECK-NEXT:    ret float [[NSUB]]
;
  %ninf = call float @returns_ninf()
  %nsub = call float @returns_nsub()
  %result = call float @llvm.maximumnum.f32(float %ninf, float %nsub)
  ret float %result
}

define nofpclass(snan) float @known_nsub__maximumnum__known_ninf() {
; CHECK-LABEL: define nofpclass(snan) float @known_nsub__maximumnum__known_ninf() {
; CHECK-NEXT:    [[NSUB:%.*]] = call float @returns_nsub()
; CHECK-NEXT:    [[NINF:%.*]] = call float @returns_ninf()
; CHECK-NEXT:    ret float [[NSUB]]
;
  %nsub = call float @returns_nsub()
  %ninf = call float @returns_ninf()
  %result = call float @llvm.maximumnum.f32(float %nsub, float %ninf)
  ret float %result
}

define nofpclass(snan) float @simplify_multiple_use_maximumnum(ptr %ptr) {
; CHECK-LABEL: define nofpclass(snan) float @simplify_multiple_use_maximumnum(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[MAX:%.*]] = call float @llvm.maximumnum.f32(float [[POSITIVE]], float [[NEGATIVE_OR_NAN]])
; CHECK-NEXT:    store float [[MAX]], ptr [[PTR]], align 4
; CHECK-NEXT:    ret float [[POSITIVE]]
;
  %positive = call float @returns_positive()
  %negative.or.nan = call float @returns_negative_or_nan()
  %max = call float @llvm.maximumnum.f32(float %positive, float %negative.or.nan)
  store float %max, ptr %ptr
  ret float %max
}

define nofpclass(snan) float @simplify_multiple_use_maximumnum_commute(ptr %ptr) {
; CHECK-LABEL: define nofpclass(snan) float @simplify_multiple_use_maximumnum_commute(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[POSITIVE:%.*]] = call float @returns_positive()
; CHECK-NEXT:    [[NEGATIVE_OR_NAN:%.*]] = call float @returns_negative_or_nan()
; CHECK-NEXT:    [[MAX:%.*]] = call float @llvm.maximumnum.f32(float [[NEGATIVE_OR_NAN]], float [[POSITIVE]])
; CHECK-NEXT:    store float [[MAX]], ptr [[PTR]], align 4
; CHECK-NEXT:    ret float [[POSITIVE]]
;
  %positive = call float @returns_positive()
  %negative.or.nan = call float @returns_negative_or_nan()
  %max = call float @llvm.maximumnum.f32(float %negative.or.nan, float %positive)
  store float %max, ptr %ptr
  ret float %max
}

define nofpclass(snan) float @nsz_fold_negative_or_zero__positive_or_zero_0__multiple_use(ptr %ptr) {
; CHECK-LABEL: define nofpclass(snan) float @nsz_fold_negative_or_zero__positive_or_zero_0__multiple_use(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[MUST_BE_NEGATIVE_OR_ZERO]], float [[MUST_BE_POSITIVE_OR_ZERO]])
; CHECK-NEXT:    store float [[RESULT]], ptr [[PTR]], align 4
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative.or.zero = call float @returns_negative_or_zero()
  %must.be.positive.or.zero = call float @returns_positive_or_zero()
  %result = call nsz float @llvm.maximumnum.f32(float %must.be.negative.or.zero, float %must.be.positive.or.zero)
  store float %result, ptr %ptr
  ret float %result
}

define nofpclass(snan) float @nsz_fold_negative_or_zero__positive_or_zero_1__multiple_use(ptr %ptr) {
; CHECK-LABEL: define nofpclass(snan) float @nsz_fold_negative_or_zero__positive_or_zero_1__multiple_use(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    [[RESULT:%.*]] = call nsz float @llvm.maximumnum.f32(float [[MUST_BE_POSITIVE_OR_ZERO]], float [[MUST_BE_NEGATIVE_OR_ZERO]])
; CHECK-NEXT:    store float [[RESULT]], ptr [[PTR]], align 4
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative.or.zero = call float @returns_negative_or_zero()
  %must.be.positive.or.zero = call float @returns_positive_or_zero()
  %result = call nsz float @llvm.maximumnum.f32(float %must.be.positive.or.zero, float %must.be.negative.or.zero)
  store float %result, ptr %ptr
  ret float %result
}

define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_0__multiple_use(ptr %ptr) {
; CHECK-LABEL: define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_0__multiple_use(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[MUST_BE_NEGATIVE_OR_ZERO]], float [[MUST_BE_POSITIVE_OR_ZERO]])
; CHECK-NEXT:    store float [[RESULT]], ptr [[PTR]], align 4
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative.or.zero = call float @returns_negative_or_zero()
  %must.be.positive.or.zero = call float @returns_positive_or_zero()
  %result = call float @llvm.maximumnum.f32(float %must.be.negative.or.zero, float %must.be.positive.or.zero)
  store float %result, ptr %ptr
  ret float %result
}

define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_1__multiple_use(ptr %ptr) {
; CHECK-LABEL: define nofpclass(snan) float @cannot_fold_negative_or_zero__positive_or_zero_1__multiple_use(
; CHECK-SAME: ptr [[PTR:%.*]]) {
; CHECK-NEXT:    [[MUST_BE_NEGATIVE_OR_ZERO:%.*]] = call float @returns_negative_or_zero()
; CHECK-NEXT:    [[MUST_BE_POSITIVE_OR_ZERO:%.*]] = call float @returns_positive_or_zero()
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[MUST_BE_POSITIVE_OR_ZERO]], float [[MUST_BE_NEGATIVE_OR_ZERO]])
; CHECK-NEXT:    store float [[RESULT]], ptr [[PTR]], align 4
; CHECK-NEXT:    ret float [[RESULT]]
;
  %must.be.negative.or.zero = call float @returns_negative_or_zero()
  %must.be.positive.or.zero = call float @returns_positive_or_zero()
  %result = call float @llvm.maximumnum.f32(float %must.be.positive.or.zero, float %must.be.negative.or.zero)
  store float %result, ptr %ptr
  ret float %result
}

define nofpclass(snan) float @qnan_result_demands_snan_lhs(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(snan) float @qnan_result_demands_snan_lhs(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[SNAN:%.*]] = call float @returns_snan()
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[COND]], float [[SNAN]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[SELECT]], float [[UNKNOWN1]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %snan = call float @returns_snan()
  %select = select i1 %cond, float %snan, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %select, float %unknown1)
  ret float %result
}

define nofpclass(snan) float @qnan_result_demands_snan_rhs(i1 %cond, float %unknown0, float %unknown1) {
; CHECK-LABEL: define nofpclass(snan) float @qnan_result_demands_snan_rhs(
; CHECK-SAME: i1 [[COND:%.*]], float [[UNKNOWN0:%.*]], float [[UNKNOWN1:%.*]]) {
; CHECK-NEXT:    [[SNAN:%.*]] = call float @returns_snan()
; CHECK-NEXT:    [[SELECT:%.*]] = select i1 [[COND]], float [[SNAN]], float [[UNKNOWN0]]
; CHECK-NEXT:    [[RESULT:%.*]] = call float @llvm.maximumnum.f32(float [[UNKNOWN1]], float [[SELECT]])
; CHECK-NEXT:    ret float [[RESULT]]
;
  %snan = call float @returns_snan()
  %select = select i1 %cond, float %snan, float %unknown0
  %result = call float @llvm.maximumnum.f32(float %unknown1, float %select)
  ret float %result
}

!0 = !{}

attributes #0 = { denormal_fpenv(preservesign) }
attributes #1 = { denormal_fpenv(dynamic) }