test/Transforms/InstCombine/vector-reverse.ll

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

; Tests to ensure operand reversals are bubbled to the result when there is no
; increase in the total number of reversals. Often this resuls in back to back
; reversals that can be eliminated entirely. This outcome is tested separately.

define <vscale x 4 x i32> @binop_reverse(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @binop_reverse(
; CHECK-NEXT:    [[ADD1:%.*]] = add nsw <vscale x 4 x i32> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[ADD:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[ADD1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[ADD]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %add = add nsw <vscale x 4 x i32> %a.rev, %b.rev
  ret <vscale x 4 x i32> %add
}

; %a.rev has multiple uses
define <vscale x 4 x i32> @binop_reverse_1(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @binop_reverse_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    [[ADD1:%.*]] = add <vscale x 4 x i32> [[A]], [[B:%.*]]
; CHECK-NEXT:    [[ADD:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[ADD1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[ADD]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  call void @use_nxv4i32(<vscale x 4 x i32>  %a.rev)
  %add = add <vscale x 4 x i32> %a.rev, %b.rev
  ret <vscale x 4 x i32> %add
}

; %b.rev has multiple uses
define <vscale x 4 x i32> @binop_reverse_2(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @binop_reverse_2(
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[ADD1:%.*]] = add <vscale x 4 x i32> [[A:%.*]], [[B]]
; CHECK-NEXT:    [[ADD:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[ADD1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[ADD]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  call void @use_nxv4i32(<vscale x 4 x i32>  %b.rev)
  %add = add <vscale x 4 x i32> %a.rev, %b.rev
  ret <vscale x 4 x i32> %add
}

; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i32> @binop_reverse_3(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @binop_reverse_3(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[ADD:%.*]] = add <vscale x 4 x i32> [[A_REV]], [[B_REV]]
; CHECK-NEXT:    ret <vscale x 4 x i32> [[ADD]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %add = add <vscale x 4 x i32> %a.rev, %b.rev
  ret <vscale x 4 x i32> %add
}

; %a.rev used as both operands
define <vscale x 4 x i32> @binop_reverse_4(<vscale x 4 x i32> %a) {
; CHECK-LABEL: @binop_reverse_4(
; CHECK-NEXT:    [[MUL1:%.*]] = mul <vscale x 4 x i32> [[A:%.*]], [[A]]
; CHECK-NEXT:    [[MUL:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[MUL1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[MUL]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %mul = mul <vscale x 4 x i32> %a.rev, %a.rev
  ret <vscale x 4 x i32> %mul
}

; %a.rev used as both operands along with a third use
define <vscale x 4 x i32> @binop_reverse_5(<vscale x 4 x i32> %a) {
; CHECK-LABEL: @binop_reverse_5(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    [[MUL:%.*]] = mul <vscale x 4 x i32> [[A_REV]], [[A_REV]]
; CHECK-NEXT:    ret <vscale x 4 x i32> [[MUL]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
  %mul = mul <vscale x 4 x i32> %a.rev, %a.rev
  ret <vscale x 4 x i32> %mul
}

define <vscale x 4 x i32> @binop_reverse_splat_RHS(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @binop_reverse_splat_RHS(
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    [[DIV1:%.*]] = udiv <vscale x 4 x i32> [[A:%.*]], [[B_SPLAT]]
; CHECK-NEXT:    [[DIV:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[DIV1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[DIV]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
  %b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  %div = udiv <vscale x 4 x i32> %a.rev, %b.splat
  ret <vscale x 4 x i32> %div
}

; %a.rev has multiple uses
define <vscale x 4 x i32> @binop_reverse_splat_RHS_1(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @binop_reverse_splat_RHS_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    [[DIV:%.*]] = udiv <vscale x 4 x i32> [[A_REV]], [[B_SPLAT]]
; CHECK-NEXT:    ret <vscale x 4 x i32> [[DIV]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
  %b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
  %div = udiv <vscale x 4 x i32> %a.rev, %b.splat
  ret <vscale x 4 x i32> %div
}

define <vscale x 4 x i32> @binop_reverse_splat_LHS(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @binop_reverse_splat_LHS(
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    [[DIV1:%.*]] = udiv <vscale x 4 x i32> [[B_SPLAT]], [[A:%.*]]
; CHECK-NEXT:    [[DIV:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[DIV1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[DIV]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
  %b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  %div = udiv <vscale x 4 x i32> %b.splat, %a.rev
  ret <vscale x 4 x i32> %div
}

; %a.rev has multiple uses
define <vscale x 4 x i32> @binop_reverse_splat_LHS_1(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @binop_reverse_splat_LHS_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    [[DIV:%.*]] = udiv <vscale x 4 x i32> [[B_SPLAT]], [[A_REV]]
; CHECK-NEXT:    ret <vscale x 4 x i32> [[DIV]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
  %b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
  %div = udiv <vscale x 4 x i32> %b.splat, %a.rev
  ret <vscale x 4 x i32> %div
}

define <vscale x 4 x float> @unop_reverse(<vscale x 4 x float> %a) {
; CHECK-LABEL: @unop_reverse(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> [[A:%.*]])
; CHECK-NEXT:    [[NEG:%.*]] = fneg fast <vscale x 4 x float> [[A_REV]]
; CHECK-NEXT:    ret <vscale x 4 x float> [[NEG]]
;
  %a.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
  %neg = fneg fast <vscale x 4 x float> %a.rev
  ret <vscale x 4 x float> %neg
}

; %a.rev has multiple uses
define <vscale x 4 x float> @unop_reverse_1(<vscale x 4 x float> %a) {
; CHECK-LABEL: @unop_reverse_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> [[A:%.*]])
; CHECK-NEXT:    call void @use_nxv4f32(<vscale x 4 x float> [[A_REV]])
; CHECK-NEXT:    [[NEG:%.*]] = fneg fast <vscale x 4 x float> [[A_REV]]
; CHECK-NEXT:    ret <vscale x 4 x float> [[NEG]]
;
  %a.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
  call void @use_nxv4f32(<vscale x 4 x float> %a.rev)
  %neg = fneg fast <vscale x 4 x float> %a.rev
  ret <vscale x 4 x float> %neg
}

define <vscale x 4 x i1> @icmp_reverse(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @icmp_reverse(
; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq <vscale x 4 x i32> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %cmp = icmp eq <vscale x 4 x i32> %a.rev, %b.rev
  ret <vscale x 4 x i1> %cmp
}

; %a.rev has multiple uses
define <vscale x 4 x i1> @icmp_reverse_1(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @icmp_reverse_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq <vscale x 4 x i32> [[A]], [[B:%.*]]
; CHECK-NEXT:    [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
  %cmp = icmp eq <vscale x 4 x i32> %a.rev, %b.rev
  ret <vscale x 4 x i1> %cmp
}

; %b.rev has multiple uses
define <vscale x 4 x i1> @icmp_reverse_2(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @icmp_reverse_2(
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq <vscale x 4 x i32> [[A:%.*]], [[B]]
; CHECK-NEXT:    [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %cmp = icmp eq <vscale x 4 x i32> %a.rev, %b.rev
  ret <vscale x 4 x i1> %cmp
}

; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i1> @icmp_reverse_3(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b) {
; CHECK-LABEL: @icmp_reverse_3(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <vscale x 4 x i32> [[A_REV]], [[B_REV]]
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %cmp = icmp eq <vscale x 4 x i32> %a.rev, %b.rev
  ret <vscale x 4 x i1> %cmp
}

define <vscale x 4 x i1> @icmp_reverse_splat_RHS(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @icmp_reverse_splat_RHS(
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt <vscale x 4 x i32> [[B_SPLAT]], [[A:%.*]]
; CHECK-NEXT:    [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
  %b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  %cmp = icmp sgt <vscale x 4 x i32> %a.rev, %b.splat
  ret <vscale x 4 x i1> %cmp
}

; %a.rev has multiple uses
define <vscale x 4 x i1> @icmp_reverse_splat_RHS_1(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @icmp_reverse_splat_RHS_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt <vscale x 4 x i32> [[A_REV]], [[B_SPLAT]]
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
  %b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
  %cmp = icmp sgt <vscale x 4 x i32> %a.rev, %b.splat
  ret <vscale x 4 x i1> %cmp
}

define <vscale x 4 x i1> @icmp_reverse_splat_LHS(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @icmp_reverse_splat_LHS(
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    [[CMP1:%.*]] = icmp ult <vscale x 4 x i32> [[B_SPLAT]], [[A:%.*]]
; CHECK-NEXT:    [[CMP:%.*]] = call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[CMP1]])
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
  %b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  %cmp = icmp ult <vscale x 4 x i32> %b.splat, %a.rev
  ret <vscale x 4 x i1> %cmp
}

; %a.rev has multiple uses
define <vscale x 4 x i1> @icmp_reverse_splat_LHS_1(<vscale x 4 x i32> %a, i32 %b) {
; CHECK-LABEL: @icmp_reverse_splat_LHS_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[A:%.*]])
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[B_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[A_REV]])
; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <vscale x 4 x i32> [[B_SPLAT]], [[A_REV]]
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP]]
;
  %a.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %a)
  %b.insert = insertelement <vscale x 4 x i32> poison, i32 %b, i32 0
  %b.splat = shufflevector <vscale x 4 x i32> %b.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i32(<vscale x 4 x i32> %a.rev)
  %cmp = icmp ult <vscale x 4 x i32> %b.splat, %a.rev
  ret <vscale x 4 x i1> %cmp
}

define <vscale x 4 x i32> @select_reverse(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse(
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C:%.*]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
  ret <vscale x 4 x i32> %select
}

; %a.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_1(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT:    call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C:%.*]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
  call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
  ret <vscale x 4 x i32> %select
}

; %b.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_2(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_2(
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B]], <vscale x 4 x i32> [[C:%.*]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
  ret <vscale x 4 x i32> %select
}

; %c.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_3(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_3(
; CHECK-NEXT:    [[C_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[C:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[C_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
  call void @use_nxv4i32(<vscale x 4 x i32> %c.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
  ret <vscale x 4 x i32> %select
}

; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_4(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_4(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[B]], <vscale x 4 x i32> [[C:%.*]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
  call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
  ret <vscale x 4 x i32> %select
}

; %a.rev and %c.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_5(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_5(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT:    [[C_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[C:%.*]])
; CHECK-NEXT:    call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[C_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
  call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %c.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
  ret <vscale x 4 x i32> %select
}

; %b.rev and %c.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_6(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_6(
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    [[C_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[C:%.*]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[C_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B]], <vscale x 4 x i32> [[C]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %c.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
  ret <vscale x 4 x i32> %select
}

; %a.rev, %b.rev and %c.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_7(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, <vscale x 4 x i32> %c) {
; CHECK-LABEL: @select_reverse_7(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    [[C_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[C:%.*]])
; CHECK-NEXT:    call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[C_REV]])
; CHECK-NEXT:    [[SELECT:%.*]] = select <vscale x 4 x i1> [[A_REV]], <vscale x 4 x i32> [[B_REV]], <vscale x 4 x i32> [[C_REV]]
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %c)
  call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %c.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.rev
  ret <vscale x 4 x i32> %select
}

define <vscale x 4 x i32> @select_reverse_splat_false(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_false(
; CHECK-NEXT:    [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C_SPLAT]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
  %c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.splat
  ret <vscale x 4 x i32> %select
}

; %a.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_splat_false_1(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_false_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT:    [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[B:%.*]], <vscale x 4 x i32> [[C_SPLAT]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
  %c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.splat
  ret <vscale x 4 x i32> %select
}

; %b.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_splat_false_2(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_false_2(
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[B]], <vscale x 4 x i32> [[C_SPLAT]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
  %c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.splat
  ret <vscale x 4 x i32> %select
}

; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_splat_false_3(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_false_3(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[SELECT:%.*]] = select <vscale x 4 x i1> [[A_REV]], <vscale x 4 x i32> [[B_REV]], <vscale x 4 x i32> [[C_SPLAT]]
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
  %c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %b.rev, <vscale x 4 x i32> %c.splat
  ret <vscale x 4 x i32> %select
}

define <vscale x 4 x i32> @select_reverse_splat_true(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_true(
; CHECK-NEXT:    [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[C_SPLAT]], <vscale x 4 x i32> [[B:%.*]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
  %c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %c.splat, <vscale x 4 x i32> %b.rev
  ret <vscale x 4 x i32> %select
}

; %a.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_splat_true_1(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_true_1(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT:    [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A]], <vscale x 4 x i32> [[C_SPLAT]], <vscale x 4 x i32> [[B:%.*]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
  %c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %c.splat, <vscale x 4 x i32> %b.rev
  ret <vscale x 4 x i32> %select
}

; %b.rev has multiple uses
define <vscale x 4 x i32> @select_reverse_splat_true_2(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_true_2(
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[SELECT1:%.*]] = select <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x i32> [[C_SPLAT]], <vscale x 4 x i32> [[B]]
; CHECK-NEXT:    [[SELECT:%.*]] = call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[SELECT1]])
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
  %c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %c.splat, <vscale x 4 x i32> %b.rev
  ret <vscale x 4 x i32> %select
}

; %a.rev and %b.rev have multiple uses
define <vscale x 4 x i32> @select_reverse_splat_true_3(<vscale x 4 x i1> %a, <vscale x 4 x i32> %b, i32 %c) {
; CHECK-LABEL: @select_reverse_splat_true_3(
; CHECK-NEXT:    [[A_REV:%.*]] = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> [[A:%.*]])
; CHECK-NEXT:    [[B_REV:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> [[B:%.*]])
; CHECK-NEXT:    [[C_INSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[C_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[C_INSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    call void @use_nxv4i1(<vscale x 4 x i1> [[A_REV]])
; CHECK-NEXT:    call void @use_nxv4i32(<vscale x 4 x i32> [[B_REV]])
; CHECK-NEXT:    [[SELECT:%.*]] = select <vscale x 4 x i1> [[A_REV]], <vscale x 4 x i32> [[C_SPLAT]], <vscale x 4 x i32> [[B_REV]]
; CHECK-NEXT:    ret <vscale x 4 x i32> [[SELECT]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32> %b)
  %c.insert = insertelement <vscale x 4 x i32> poison, i32 %c, i32 0
  %c.splat = shufflevector <vscale x 4 x i32> %c.insert, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
  call void @use_nxv4i1(<vscale x 4 x i1> %a.rev)
  call void @use_nxv4i32(<vscale x 4 x i32> %b.rev)
  %select = select <vscale x 4 x i1> %a.rev, <vscale x 4 x i32> %c.splat, <vscale x 4 x i32> %b.rev
  ret <vscale x 4 x i32> %select
}

; Tests to ensure no reversals exist when all operands are reversed and the
; result is also reversed.

define <vscale x 4 x float> @reverse_binop_reverse(<vscale x 4 x float> %a, <vscale x 4 x float> %b) {
; CHECK-LABEL: @reverse_binop_reverse(
; CHECK-NEXT:    [[ADD1:%.*]] = fadd <vscale x 4 x float> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    ret <vscale x 4 x float> [[ADD1]]
;
  %a.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
  %b.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %b)
  %add = fadd <vscale x 4 x float> %a.rev, %b.rev
  %add.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %add)
  ret <vscale x 4 x float> %add.rev
}

define <vscale x 4 x float> @reverse_binop_reverse_splat_RHS(<vscale x 4 x float> %a, float %b) {
; CHECK-LABEL: @reverse_binop_reverse_splat_RHS(
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x float> poison, float [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x float> [[B_INSERT]], <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    [[DIV1:%.*]] = fdiv <vscale x 4 x float> [[A:%.*]], [[B_SPLAT]]
; CHECK-NEXT:    ret <vscale x 4 x float> [[DIV1]]
;
  %a.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
  %b.insert = insertelement <vscale x 4 x float> poison, float %b, i32 0
  %b.splat = shufflevector <vscale x 4 x float> %b.insert, <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
  %div = fdiv <vscale x 4 x float> %a.rev, %b.splat
  %div.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %div)
  ret <vscale x 4 x float> %div.rev
}

define <vscale x 4 x float> @reverse_binop_reverse_splat_LHS(<vscale x 4 x float> %a, float %b) {
; CHECK-LABEL: @reverse_binop_reverse_splat_LHS(
; CHECK-NEXT:    [[B_INSERT:%.*]] = insertelement <vscale x 4 x float> poison, float [[B:%.*]], i64 0
; CHECK-NEXT:    [[B_SPLAT:%.*]] = shufflevector <vscale x 4 x float> [[B_INSERT]], <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
; CHECK-NEXT:    [[DIV1:%.*]] = fdiv <vscale x 4 x float> [[B_SPLAT]], [[A:%.*]]
; CHECK-NEXT:    ret <vscale x 4 x float> [[DIV1]]
;
  %a.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
  %b.insert = insertelement <vscale x 4 x float> poison, float %b, i32 0
  %b.splat = shufflevector <vscale x 4 x float> %b.insert, <vscale x 4 x float> poison, <vscale x 4 x i32> zeroinitializer
  %div = fdiv <vscale x 4 x float> %b.splat, %a.rev
  %div.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %div)
  ret <vscale x 4 x float> %div.rev
}

define <vscale x 4 x i1> @reverse_fcmp_reverse(<vscale x 4 x float> %a, <vscale x 4 x float> %b) {
; CHECK-LABEL: @reverse_fcmp_reverse(
; CHECK-NEXT:    [[CMP1:%.*]] = fcmp fast olt <vscale x 4 x float> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    ret <vscale x 4 x i1> [[CMP1]]
;
  %a.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
  %b.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %b)
  %cmp = fcmp fast olt <vscale x 4 x float> %a.rev, %b.rev
  %cmp.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %cmp)
  ret <vscale x 4 x i1> %cmp.rev
}

define <vscale x 4 x float> @reverse_select_reverse(<vscale x 4 x i1> %a, <vscale x 4 x float> %b, <vscale x 4 x float> %c) {
; CHECK-LABEL: @reverse_select_reverse(
; CHECK-NEXT:    [[SELECT1:%.*]] = select fast <vscale x 4 x i1> [[A:%.*]], <vscale x 4 x float> [[B:%.*]], <vscale x 4 x float> [[C:%.*]]
; CHECK-NEXT:    ret <vscale x 4 x float> [[SELECT1]]
;
  %a.rev = tail call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %a)
  %b.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %b)
  %c.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %c)
  %select = select fast <vscale x 4 x i1> %a.rev, <vscale x 4 x float> %b.rev, <vscale x 4 x float> %c.rev
  %select.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %select)
  ret <vscale x 4 x float> %select.rev
}

define <vscale x 4 x float> @reverse_unop_reverse(<vscale x 4 x float> %a) {
; CHECK-LABEL: @reverse_unop_reverse(
; CHECK-NEXT:    [[NEG1:%.*]] = fneg <vscale x 4 x float> [[A:%.*]]
; CHECK-NEXT:    ret <vscale x 4 x float> [[NEG1]]
;
  %a.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %a)
  %neg = fneg <vscale x 4 x float> %a.rev
  %neg.rev = tail call <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float> %neg)
  ret <vscale x 4 x float> %neg.rev
}


declare void @use_nxv4i1(<vscale x 4 x i1>)
declare void @use_nxv4i32(<vscale x 4 x i32>)
declare void @use_nxv4f32(<vscale x 4 x float>)

declare <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1>)
declare <vscale x 4 x i32> @llvm.experimental.vector.reverse.nxv4i32(<vscale x 4 x i32>)
declare <vscale x 4 x float> @llvm.experimental.vector.reverse.nxv4f32(<vscale x 4 x float>)