llvm/test/Transforms/InstSimplify/fp-undef-poison.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s

define float @fadd_undef_op0(float %x) {
; CHECK-LABEL: @fadd_undef_op0(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = fadd float undef, %x
  ret float %r
}

define float @fadd_poison_op0(float %x) {
; CHECK-LABEL: @fadd_poison_op0(
; CHECK-NEXT:    ret float poison
;
  %r = fadd float poison, %x
  ret float %r
}

define float @fadd_undef_op1(float %x) {
; CHECK-LABEL: @fadd_undef_op1(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = fadd float %x, undef
  ret float %r
}

define float @fadd_poison_op1(float %x) {
; CHECK-LABEL: @fadd_poison_op1(
; CHECK-NEXT:    ret float poison
;
  %r = fadd float %x, poison
  ret float %r
}

define float @fsub_undef_op0(float %x) {
; CHECK-LABEL: @fsub_undef_op0(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = fsub float undef, %x
  ret float %r
}

define float @fsub_poison_op0(float %x) {
; CHECK-LABEL: @fsub_poison_op0(
; CHECK-NEXT:    ret float poison
;
  %r = fsub float poison, %x
  ret float %r
}

define float @fsub_undef_op1(float %x) {
; CHECK-LABEL: @fsub_undef_op1(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = fsub float %x, undef
  ret float %r
}

define float @fsub_poison_op1(float %x) {
; CHECK-LABEL: @fsub_poison_op1(
; CHECK-NEXT:    ret float poison
;
  %r = fsub float %x, poison
  ret float %r
}

define float @fmul_undef_op0(float %x) {
; CHECK-LABEL: @fmul_undef_op0(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = fmul float undef, %x
  ret float %r
}

define float @fmul_poison_op0(float %x) {
; CHECK-LABEL: @fmul_poison_op0(
; CHECK-NEXT:    ret float poison
;
  %r = fmul float poison, %x
  ret float %r
}

define float @fmul_undef_op1(float %x) {
; CHECK-LABEL: @fmul_undef_op1(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = fmul float %x, undef
  ret float %r
}

define float @fmul_poison_op1(float %x) {
; CHECK-LABEL: @fmul_poison_op1(
; CHECK-NEXT:    ret float poison
;
  %r = fmul float %x, poison
  ret float %r
}

define float @fdiv_undef_op0(float %x) {
; CHECK-LABEL: @fdiv_undef_op0(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = fdiv float undef, %x
  ret float %r
}

define float @fdiv_poison_op0(float %x) {
; CHECK-LABEL: @fdiv_poison_op0(
; CHECK-NEXT:    ret float poison
;
  %r = fdiv float poison, %x
  ret float %r
}

define float @fdiv_undef_op1(float %x) {
; CHECK-LABEL: @fdiv_undef_op1(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = fdiv float %x, undef
  ret float %r
}

define float @fdiv_poison_op1(float %x) {
; CHECK-LABEL: @fdiv_poison_op1(
; CHECK-NEXT:    ret float poison
;
  %r = fdiv float %x, poison
  ret float %r
}

define float @frem_undef_op0(float %x) {
; CHECK-LABEL: @frem_undef_op0(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = frem float undef, %x
  ret float %r
}

define float @frem_poison_op0(float %x) {
; CHECK-LABEL: @frem_poison_op0(
; CHECK-NEXT:    ret float poison
;
  %r = frem float poison, %x
  ret float %r
}

define float @frem_undef_op1(float %x) {
; CHECK-LABEL: @frem_undef_op1(
; CHECK-NEXT:    ret float 0x7FF8000000000000
;
  %r = frem float %x, undef
  ret float %r
}

define float @frem_poison_op1(float %x) {
; CHECK-LABEL: @frem_poison_op1(
; CHECK-NEXT:    ret float poison
;
  %r = frem float %x, poison
  ret float %r
}

; Repeat all tests with fast-math-flags. Alternate 'nnan' and 'fast' for more coverage.

define float @fadd_undef_op0_nnan(float %x) {
; CHECK-LABEL: @fadd_undef_op0_nnan(
; CHECK-NEXT:    ret float poison
;
  %r = fadd nnan float undef, %x
  ret float %r
}

define float @fadd_undef_op1_fast(float %x) {
; CHECK-LABEL: @fadd_undef_op1_fast(
; CHECK-NEXT:    ret float poison
;
  %r = fadd fast float %x, undef
  ret float %r
}

define float @fsub_undef_op0_fast(float %x) {
; CHECK-LABEL: @fsub_undef_op0_fast(
; CHECK-NEXT:    ret float poison
;
  %r = fsub fast float undef, %x
  ret float %r
}

define float @fsub_undef_op1_nnan(float %x) {
; CHECK-LABEL: @fsub_undef_op1_nnan(
; CHECK-NEXT:    ret float poison
;
  %r = fsub nnan float %x, undef
  ret float %r
}

define float @fmul_undef_op0_nnan(float %x) {
; CHECK-LABEL: @fmul_undef_op0_nnan(
; CHECK-NEXT:    ret float poison
;
  %r = fmul nnan float undef, %x
  ret float %r
}

define float @fmul_undef_op1_fast(float %x) {
; CHECK-LABEL: @fmul_undef_op1_fast(
; CHECK-NEXT:    ret float poison
;
  %r = fmul fast float %x, undef
  ret float %r
}

define float @fdiv_undef_op0_fast(float %x) {
; CHECK-LABEL: @fdiv_undef_op0_fast(
; CHECK-NEXT:    ret float poison
;
  %r = fdiv fast float undef, %x
  ret float %r
}

define float @fdiv_undef_op1_nnan(float %x) {
; CHECK-LABEL: @fdiv_undef_op1_nnan(
; CHECK-NEXT:    ret float poison
;
  %r = fdiv nnan float %x, undef
  ret float %r
}

define float @frem_undef_op0_nnan(float %x) {
; CHECK-LABEL: @frem_undef_op0_nnan(
; CHECK-NEXT:    ret float poison
;
  %r = frem nnan float undef, %x
  ret float %r
}

define float @frem_undef_op1_fast(float %x) {
; CHECK-LABEL: @frem_undef_op1_fast(
; CHECK-NEXT:    ret float poison
;
  %r = frem fast float %x, undef
  ret float %r
}

define double @fdiv_ninf_nan_op0(double %x) {
; CHECK-LABEL: @fdiv_ninf_nan_op0(
; CHECK-NEXT:    ret double 0xFFF8000000000000
;
  %r = fdiv ninf double 0xfff8000000000000, %x
  ret double %r
}

define double @fadd_ninf_nan_op1(double %x) {
; CHECK-LABEL: @fadd_ninf_nan_op1(
; CHECK-NEXT:    ret double 0x7FF8000000000000
;
  %r = fadd ninf double %x, 0x7ff8000000000000
  ret double %r
}

define double @fdiv_ninf_inf_op0(double %x) {
; CHECK-LABEL: @fdiv_ninf_inf_op0(
; CHECK-NEXT:    ret double poison
;
  %r = fdiv ninf double 0x7ff0000000000000, %x
  ret double %r
}

define double @fadd_ninf_inf_op1(double %x) {
; CHECK-LABEL: @fadd_ninf_inf_op1(
; CHECK-NEXT:    ret double poison
;
  %r = fadd ninf double %x, 0xfff0000000000000
  ret double %r
}

; TODO: Should simplify to inf.

define double @fsub_nnan_inf_op0(double %x) {
; CHECK-LABEL: @fsub_nnan_inf_op0(
; CHECK-NEXT:    [[R:%.*]] = fsub nnan double 0x7FF0000000000000, [[X:%.*]]
; CHECK-NEXT:    ret double [[R]]
;
  %r = fsub nnan double 0x7ff0000000000000, %x
  ret double %r
}

; TODO: Should simplify to -inf.

define double @fmul_nnan_inf_op1(double %x) {
; CHECK-LABEL: @fmul_nnan_inf_op1(
; CHECK-NEXT:    [[R:%.*]] = fmul nnan double [[X:%.*]], 0xFFF0000000000000
; CHECK-NEXT:    ret double [[R]]
;
  %r = fmul nnan double %x, 0xfff0000000000000
  ret double %r
}