llvm/test/Transforms/InstCombine/AArch64/demandelts.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=instcombine -mtriple aarch64 < %s | FileCheck %s

define <2 x float> @fcvtxn(<2 x double> %d1) {
; CHECK-LABEL: @fcvtxn(
; CHECK-NEXT:    [[I:%.*]] = call <2 x float> @llvm.aarch64.neon.fcvtxn.v2f32.v2f64(<2 x double> [[D1:%.*]])
; CHECK-NEXT:    [[S:%.*]] = shufflevector <2 x float> [[I]], <2 x float> poison, <2 x i32> <i32 0, i32 poison>
; CHECK-NEXT:    ret <2 x float> [[S]]
;
  %a = shufflevector <2 x double> %d1, <2 x double> undef, <2 x i32> <i32 0, i32 0>
  %i = call <2 x float> @llvm.aarch64.neon.fcvtxn.v2f32.v2f64(<2 x double> %a)
  %s = shufflevector <2 x float> %i, <2 x float> undef, <2 x i32> <i32 0, i32 undef>
  ret <2 x float> %s
}

define <4 x i16> @rshrn(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @rshrn(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.rshrn.v4i16(<4 x i32> [[A]], i32 9)
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.rshrn.v4i16(<4 x i32> %a, i32 9)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @sqrshrn(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @sqrshrn(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.sqrshrn.v4i16(<4 x i32> [[A]], i32 9)
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.sqrshrn.v4i16(<4 x i32> %a, i32 9)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @sqrshrun(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @sqrshrun(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.sqrshrun.v4i16(<4 x i32> [[A]], i32 9)
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.sqrshrun.v4i16(<4 x i32> %a, i32 9)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @sqshrn(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @sqshrn(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.sqshrn.v4i16(<4 x i32> [[A]], i32 9)
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.sqshrn.v4i16(<4 x i32> %a, i32 9)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @sqshrun(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @sqshrun(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.sqshrun.v4i16(<4 x i32> [[A]], i32 9)
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.sqshrun.v4i16(<4 x i32> %a, i32 9)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @sqxtn(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @sqxtn(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.sqxtn.v4i16(<4 x i32> [[A]])
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.sqxtn.v4i16(<4 x i32> %a)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @sqxtun(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @sqxtun(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.sqxtun.v4i16(<4 x i32> [[A]])
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.sqxtun.v4i16(<4 x i32> %a)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @uqrshrn(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @uqrshrn(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.uqrshrn.v4i16(<4 x i32> [[A]], i32 9)
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.uqrshrn.v4i16(<4 x i32> %a, i32 9)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @uqshrn(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @uqshrn(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.uqshrn.v4i16(<4 x i32> [[A]], i32 9)
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.uqshrn.v4i16(<4 x i32> %a, i32 9)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

define <4 x i16> @uqxtn(<2 x i32> %d1, <2 x i32> %d2) {
; CHECK-LABEL: @uqxtn(
; CHECK-NEXT:    [[A:%.*]] = shufflevector <2 x i32> [[D1:%.*]], <2 x i32> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    [[I:%.*]] = call <4 x i16> @llvm.aarch64.neon.uqxtn.v4i16(<4 x i32> [[A]])
; CHECK-NEXT:    [[S:%.*]] = shufflevector <4 x i16> [[I]], <4 x i16> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
; CHECK-NEXT:    ret <4 x i16> [[S]]
;
  %a = shufflevector <2 x i32> %d1, <2 x i32> %d2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
  %i = call <4 x i16> @llvm.aarch64.neon.uqxtn.v4i16(<4 x i32> %a)
  %s = shufflevector <4 x i16> %i, <4 x i16> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
  ret <4 x i16> %s
}

declare <2 x float> @llvm.aarch64.neon.fcvtxn.v2f32.v2f64(<2 x double> %a)
declare <4 x i16> @llvm.aarch64.neon.rshrn.v4i16(<4 x i32>, i32)
declare <4 x i16> @llvm.aarch64.neon.sqrshrn.v4i16(<4 x i32>, i32)
declare <4 x i16> @llvm.aarch64.neon.sqrshrun.v4i16(<4 x i32>, i32)
declare <4 x i16> @llvm.aarch64.neon.sqshrn.v4i16(<4 x i32>, i32)
declare <4 x i16> @llvm.aarch64.neon.sqshrun.v4i16(<4 x i32>, i32)
declare <4 x i16> @llvm.aarch64.neon.sqxtn.v4i16(<4 x i32>)
declare <4 x i16> @llvm.aarch64.neon.sqxtun.v4i16(<4 x i32>)
declare <4 x i16> @llvm.aarch64.neon.uqrshrn.v4i16(<4 x i32>, i32)
declare <4 x i16> @llvm.aarch64.neon.uqshrn.v4i16(<4 x i32>, i32)
declare <4 x i16> @llvm.aarch64.neon.uqxtn.v4i16(<4 x i32>)