This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGe5aaf0332670: [InstCombine] Update InstCombine to use poison
instead of undef for… (authored by hyeongyukim).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D110226/new/
https://reviews.llvm.org/D110226
Files:
clang/test/Headers/wasm.c
llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
llvm/test/Transforms/InstCombine/X86/x86-f16c-inseltpoison.ll
llvm/test/Transforms/InstCombine/X86/x86-f16c.ll
llvm/test/Transforms/InstCombine/cast.ll
llvm/test/Transforms/InstCombine/shuffle-cast-dist.ll
llvm/test/Transforms/InstCombine/shufflevec-bitcast-inseltpoison.ll
llvm/test/Transforms/InstCombine/shufflevec-bitcast.ll
llvm/test/Transforms/InstCombine/trunc-inseltpoison.ll
llvm/test/Transforms/InstCombine/trunc.ll
llvm/test/Transforms/InstCombine/vector-casts.ll
Index: llvm/test/Transforms/InstCombine/vector-casts.ll
===================================================================
--- llvm/test/Transforms/InstCombine/vector-casts.ll
+++ llvm/test/Transforms/InstCombine/vector-casts.ll
@@ -414,7 +414,7 @@
define <4 x float> @sitofp_shuf(<4 x i32> %x) {
; CHECK-LABEL: @sitofp_shuf(
; CHECK-NEXT: [[TMP1:%.*]] = sitofp <4 x i32> [[X:%.*]] to <4 x float>
-; CHECK-NEXT: [[R:%.*]] = shufflevector <4 x float> [[TMP1]], <4 x float> undef, <4 x i32> <i32 1, i32 2, i32 3, i32 undef>
+; CHECK-NEXT: [[R:%.*]] = shufflevector <4 x float> [[TMP1]], <4 x float> poison, <4 x i32> <i32 1, i32 2, i32 3, i32 undef>
; CHECK-NEXT: ret <4 x float> [[R]]
;
%s = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 1, i32 2, i32 3, i32 undef>
@@ -425,7 +425,7 @@
define <3 x half> @uitofp_shuf(<3 x i16> %x) {
; CHECK-LABEL: @uitofp_shuf(
; CHECK-NEXT: [[TMP1:%.*]] = uitofp <3 x i16> [[X:%.*]] to <3 x half>
-; CHECK-NEXT: [[R:%.*]] = shufflevector <3 x half> [[TMP1]], <3 x half> undef, <3 x i32> <i32 2, i32 undef, i32 0>
+; CHECK-NEXT: [[R:%.*]] = shufflevector <3 x half> [[TMP1]], <3 x half> poison, <3 x i32> <i32 2, i32 undef, i32 0>
; CHECK-NEXT: ret <3 x half> [[R]]
;
%s = shufflevector <3 x i16> %x, <3 x i16> poison, <3 x i32> <i32 2, i32 undef, i32 0>
@@ -436,7 +436,7 @@
define <4 x i64> @fptosi_shuf(<4 x double> %x) {
; CHECK-LABEL: @fptosi_shuf(
; CHECK-NEXT: [[TMP1:%.*]] = fptosi <4 x double> [[X:%.*]] to <4 x i64>
-; CHECK-NEXT: [[R:%.*]] = shufflevector <4 x i64> [[TMP1]], <4 x i64> undef, <4 x i32> <i32 undef, i32 2, i32 3, i32 undef>
+; CHECK-NEXT: [[R:%.*]] = shufflevector <4 x i64> [[TMP1]], <4 x i64> poison, <4 x i32> <i32 undef, i32 2, i32 3, i32 undef>
; CHECK-NEXT: ret <4 x i64> [[R]]
;
%s = shufflevector <4 x double> %x, <4 x double> poison, <4 x i32> <i32 undef, i32 2, i32 3, i32 undef>
@@ -447,7 +447,7 @@
define <2 x i32> @fptoui_shuf(<2 x float> %x) {
; CHECK-LABEL: @fptoui_shuf(
; CHECK-NEXT: [[TMP1:%.*]] = fptoui <2 x float> [[X:%.*]] to <2 x i32>
-; CHECK-NEXT: [[R:%.*]] = shufflevector <2 x i32> [[TMP1]], <2 x i32> undef, <2 x i32> <i32 1, i32 1>
+; CHECK-NEXT: [[R:%.*]] = shufflevector <2 x i32> [[TMP1]], <2 x i32> poison, <2 x i32> <i32 1, i32 1>
; CHECK-NEXT: ret <2 x i32> [[R]]
;
%s = shufflevector <2 x float> %x, <2 x float> poison, <2 x i32> <i32 1, i32 1>
Index: llvm/test/Transforms/InstCombine/trunc.ll
===================================================================
--- llvm/test/Transforms/InstCombine/trunc.ll
+++ llvm/test/Transforms/InstCombine/trunc.ll
@@ -922,7 +922,7 @@
define <4 x i8> @wide_splat1(<4 x i32> %x) {
; CHECK-LABEL: @wide_splat1(
; CHECK-NEXT: [[TMP1:%.*]] = trunc <4 x i32> [[X:%.*]] to <4 x i8>
-; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <4 x i8> [[TMP1]], <4 x i8> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
+; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <4 x i8> [[TMP1]], <4 x i8> poison, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
; CHECK-NEXT: ret <4 x i8> [[TRUNC]]
;
%shuf = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
@@ -936,7 +936,7 @@
define <3 x i31> @wide_splat2(<3 x i33> %x) {
; CHECK-LABEL: @wide_splat2(
; CHECK-NEXT: [[TMP1:%.*]] = trunc <3 x i33> [[X:%.*]] to <3 x i31>
-; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <3 x i31> [[TMP1]], <3 x i31> undef, <3 x i32> <i32 1, i32 1, i32 1>
+; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <3 x i31> [[TMP1]], <3 x i31> poison, <3 x i32> <i32 1, i32 1, i32 1>
; CHECK-NEXT: ret <3 x i31> [[TRUNC]]
;
%shuf = shufflevector <3 x i33> %x, <3 x i33> undef, <3 x i32> <i32 1, i32 1, i32 1>
Index: llvm/test/Transforms/InstCombine/trunc-inseltpoison.ll
===================================================================
--- llvm/test/Transforms/InstCombine/trunc-inseltpoison.ll
+++ llvm/test/Transforms/InstCombine/trunc-inseltpoison.ll
@@ -922,7 +922,7 @@
define <4 x i8> @wide_splat1(<4 x i32> %x) {
; CHECK-LABEL: @wide_splat1(
; CHECK-NEXT: [[TMP1:%.*]] = trunc <4 x i32> [[X:%.*]] to <4 x i8>
-; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <4 x i8> [[TMP1]], <4 x i8> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
+; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <4 x i8> [[TMP1]], <4 x i8> poison, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
; CHECK-NEXT: ret <4 x i8> [[TRUNC]]
;
%shuf = shufflevector <4 x i32> %x, <4 x i32> poison, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
@@ -936,7 +936,7 @@
define <3 x i31> @wide_splat2(<3 x i33> %x) {
; CHECK-LABEL: @wide_splat2(
; CHECK-NEXT: [[TMP1:%.*]] = trunc <3 x i33> [[X:%.*]] to <3 x i31>
-; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <3 x i31> [[TMP1]], <3 x i31> undef, <3 x i32> <i32 1, i32 1, i32 1>
+; CHECK-NEXT: [[TRUNC:%.*]] = shufflevector <3 x i31> [[TMP1]], <3 x i31> poison, <3 x i32> <i32 1, i32 1, i32 1>
; CHECK-NEXT: ret <3 x i31> [[TRUNC]]
;
%shuf = shufflevector <3 x i33> %x, <3 x i33> poison, <3 x i32> <i32 1, i32 1, i32 1>
Index: llvm/test/Transforms/InstCombine/shufflevec-bitcast.ll
===================================================================
--- llvm/test/Transforms/InstCombine/shufflevec-bitcast.ll
+++ llvm/test/Transforms/InstCombine/shufflevec-bitcast.ll
@@ -57,7 +57,7 @@
define <4 x i32> @splat_bitcast_operand_same_size_src_elt(<4 x float> %x) {
; CHECK-LABEL: @splat_bitcast_operand_same_size_src_elt(
; CHECK-NEXT: [[TMP1:%.*]] = bitcast <4 x float> [[X:%.*]] to <4 x i32>
-; CHECK-NEXT: [[BC:%.*]] = shufflevector <4 x i32> [[TMP1]], <4 x i32> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
+; CHECK-NEXT: [[BC:%.*]] = shufflevector <4 x i32> [[TMP1]], <4 x i32> poison, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
; CHECK-NEXT: ret <4 x i32> [[BC]]
;
%s1 = shufflevector <4 x float> %x, <4 x float> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
Index: llvm/test/Transforms/InstCombine/shufflevec-bitcast-inseltpoison.ll
===================================================================
--- llvm/test/Transforms/InstCombine/shufflevec-bitcast-inseltpoison.ll
+++ llvm/test/Transforms/InstCombine/shufflevec-bitcast-inseltpoison.ll
@@ -57,7 +57,7 @@
define <4 x i32> @splat_bitcast_operand_same_size_src_elt(<4 x float> %x) {
; CHECK-LABEL: @splat_bitcast_operand_same_size_src_elt(
; CHECK-NEXT: [[TMP1:%.*]] = bitcast <4 x float> [[X:%.*]] to <4 x i32>
-; CHECK-NEXT: [[BC:%.*]] = shufflevector <4 x i32> [[TMP1]], <4 x i32> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
+; CHECK-NEXT: [[BC:%.*]] = shufflevector <4 x i32> [[TMP1]], <4 x i32> poison, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
; CHECK-NEXT: ret <4 x i32> [[BC]]
;
%s1 = shufflevector <4 x float> %x, <4 x float> poison, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
Index: llvm/test/Transforms/InstCombine/shuffle-cast-dist.ll
===================================================================
--- llvm/test/Transforms/InstCombine/shuffle-cast-dist.ll
+++ llvm/test/Transforms/InstCombine/shuffle-cast-dist.ll
@@ -5,7 +5,7 @@
; CHECK-LABEL: @vtrn1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = bitcast <2 x i32> [[V:%.*]] to <2 x float>
-; CHECK-NEXT: [[R:%.*]] = shufflevector <2 x float> [[TMP0]], <2 x float> undef, <2 x i32> zeroinitializer
+; CHECK-NEXT: [[R:%.*]] = shufflevector <2 x float> [[TMP0]], <2 x float> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: ret <2 x float> [[R]]
;
{
Index: llvm/test/Transforms/InstCombine/cast.ll
===================================================================
--- llvm/test/Transforms/InstCombine/cast.ll
+++ llvm/test/Transforms/InstCombine/cast.ll
@@ -858,11 +858,11 @@
define <3 x i32> @test60(<4 x i32> %call4) {
; BE-LABEL: @test60(
-; BE-NEXT: [[P10:%.*]] = shufflevector <4 x i32> [[CALL4:%.*]], <4 x i32> undef, <3 x i32> <i32 1, i32 2, i32 3>
+; BE-NEXT: [[P10:%.*]] = shufflevector <4 x i32> [[CALL4:%.*]], <4 x i32> poison, <3 x i32> <i32 1, i32 2, i32 3>
; BE-NEXT: ret <3 x i32> [[P10]]
;
; LE-LABEL: @test60(
-; LE-NEXT: [[P10:%.*]] = shufflevector <4 x i32> [[CALL4:%.*]], <4 x i32> undef, <3 x i32> <i32 0, i32 1, i32 2>
+; LE-NEXT: [[P10:%.*]] = shufflevector <4 x i32> [[CALL4:%.*]], <4 x i32> poison, <3 x i32> <i32 0, i32 1, i32 2>
; LE-NEXT: ret <3 x i32> [[P10]]
;
%p11 = bitcast <4 x i32> %call4 to i128
Index: llvm/test/Transforms/InstCombine/X86/x86-f16c.ll
===================================================================
--- llvm/test/Transforms/InstCombine/X86/x86-f16c.ll
+++ llvm/test/Transforms/InstCombine/X86/x86-f16c.ll
@@ -25,7 +25,7 @@
define <8 x float> @demand_vcvtph2ps_256(<8 x i16> %A) {
; CHECK-LABEL: @demand_vcvtph2ps_256(
; CHECK-NEXT: [[TMP1:%.*]] = bitcast <8 x i16> [[A:%.*]] to <8 x half>
-; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <8 x half> [[TMP1]], <8 x half> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
+; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <8 x half> [[TMP1]], <8 x half> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[CVTPH2PS:%.*]] = fpext <8 x half> [[TMP2]] to <8 x float>
; CHECK-NEXT: ret <8 x float> [[CVTPH2PS]]
;
Index: llvm/test/Transforms/InstCombine/X86/x86-f16c-inseltpoison.ll
===================================================================
--- llvm/test/Transforms/InstCombine/X86/x86-f16c-inseltpoison.ll
+++ llvm/test/Transforms/InstCombine/X86/x86-f16c-inseltpoison.ll
@@ -25,7 +25,7 @@
define <8 x float> @demand_vcvtph2ps_256(<8 x i16> %A) {
; CHECK-LABEL: @demand_vcvtph2ps_256(
; CHECK-NEXT: [[TMP1:%.*]] = bitcast <8 x i16> [[A:%.*]] to <8 x half>
-; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <8 x half> [[TMP1]], <8 x half> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
+; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <8 x half> [[TMP1]], <8 x half> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[CVTPH2PS:%.*]] = fpext <8 x half> [[TMP2]] to <8 x float>
; CHECK-NEXT: ret <8 x float> [[CVTPH2PS]]
;
Index: llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
===================================================================
--- llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
+++ llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
@@ -333,7 +333,7 @@
SrcTy->getNumElements() == DestTy->getNumElements() &&
SrcTy->getPrimitiveSizeInBits() == DestTy->getPrimitiveSizeInBits()) {
Value *CastX = Builder.CreateCast(CI.getOpcode(), X, DestTy);
- return new ShuffleVectorInst(CastX, UndefValue::get(DestTy), Mask);
+ return new ShuffleVectorInst(CastX, Mask);
}
}
@@ -701,10 +701,10 @@
if (Shuf && Shuf->hasOneUse() && match(Shuf->getOperand(1), m_Undef()) &&
is_splat(Shuf->getShuffleMask()) &&
Shuf->getType() == Shuf->getOperand(0)->getType()) {
- // trunc (shuf X, Undef, SplatMask) --> shuf (trunc X), Undef, SplatMask
- Constant *NarrowUndef = UndefValue::get(Trunc.getType());
+ // trunc (shuf X, Undef, SplatMask) --> shuf (trunc X), Poison, SplatMask
+ // trunc (shuf X, Poison, SplatMask) --> shuf (trunc X), Poison, SplatMask
Value *NarrowOp = Builder.CreateTrunc(Shuf->getOperand(0), Trunc.getType());
- return new ShuffleVectorInst(NarrowOp, NarrowUndef, Shuf->getShuffleMask());
+ return new ShuffleVectorInst(NarrowOp, Shuf->getShuffleMask());
}
return nullptr;
@@ -2144,9 +2144,9 @@
if (SrcElts > DestElts) {
// If we're shrinking the number of elements (rewriting an integer
// truncate), just shuffle in the elements corresponding to the least
- // significant bits from the input and use undef as the second shuffle
+ // significant bits from the input and use poison as the second shuffle
// input.
- V2 = UndefValue::get(SrcTy);
+ V2 = PoisonValue::get(SrcTy);
// Make sure the shuffle mask selects the "least significant bits" by
// keeping elements from back of the src vector for big endian, and from the
// front for little endian.
Index: clang/test/Headers/wasm.c
===================================================================
--- clang/test/Headers/wasm.c
+++ clang/test/Headers/wasm.c
@@ -825,7 +825,7 @@
// CHECK-NEXT: entry:
// CHECK-NEXT: [[VECINIT_I:%.*]] = insertelement <4 x float> undef, float [[A:%.*]], i32 0
// CHECK-NEXT: [[TMP0:%.*]] = bitcast <4 x float> [[VECINIT_I]] to <4 x i32>
-// CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i32> [[TMP0]], <4 x i32> undef, <4 x i32> zeroinitializer
+// CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i32> [[TMP0]], <4 x i32> poison, <4 x i32> zeroinitializer
// CHECK-NEXT: ret <4 x i32> [[TMP1]]
//
v128_t test_f32x4_splat(float a) {
@@ -1598,7 +1598,7 @@
// CHECK-NEXT: [[TMP0:%.*]] = bitcast <4 x i32> [[A:%.*]] to <16 x i8>
// CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[B:%.*]] to i8
// CHECK-NEXT: [[TMP2:%.*]] = insertelement <16 x i8> undef, i8 [[TMP1]], i32 0
-// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <16 x i8> [[TMP2]], <16 x i8> undef, <16 x i32> zeroinitializer
+// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <16 x i8> [[TMP2]], <16 x i8> poison, <16 x i32> zeroinitializer
// CHECK-NEXT: [[SHL_I:%.*]] = shl <16 x i8> [[TMP0]], [[SH_PROM_I]]
// CHECK-NEXT: [[TMP3:%.*]] = bitcast <16 x i8> [[SHL_I]] to <4 x i32>
// CHECK-NEXT: ret <4 x i32> [[TMP3]]
@@ -1612,7 +1612,7 @@
// CHECK-NEXT: [[TMP0:%.*]] = bitcast <4 x i32> [[A:%.*]] to <16 x i8>
// CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[B:%.*]] to i8
// CHECK-NEXT: [[TMP2:%.*]] = insertelement <16 x i8> undef, i8 [[TMP1]], i32 0
-// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <16 x i8> [[TMP2]], <16 x i8> undef, <16 x i32> zeroinitializer
+// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <16 x i8> [[TMP2]], <16 x i8> poison, <16 x i32> zeroinitializer
// CHECK-NEXT: [[SHR_I:%.*]] = ashr <16 x i8> [[TMP0]], [[SH_PROM_I]]
// CHECK-NEXT: [[TMP3:%.*]] = bitcast <16 x i8> [[SHR_I]] to <4 x i32>
// CHECK-NEXT: ret <4 x i32> [[TMP3]]
@@ -1626,7 +1626,7 @@
// CHECK-NEXT: [[TMP0:%.*]] = bitcast <4 x i32> [[A:%.*]] to <16 x i8>
// CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[B:%.*]] to i8
// CHECK-NEXT: [[TMP2:%.*]] = insertelement <16 x i8> undef, i8 [[TMP1]], i32 0
-// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <16 x i8> [[TMP2]], <16 x i8> undef, <16 x i32> zeroinitializer
+// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <16 x i8> [[TMP2]], <16 x i8> poison, <16 x i32> zeroinitializer
// CHECK-NEXT: [[SHR_I:%.*]] = lshr <16 x i8> [[TMP0]], [[SH_PROM_I]]
// CHECK-NEXT: [[TMP3:%.*]] = bitcast <16 x i8> [[SHR_I]] to <4 x i32>
// CHECK-NEXT: ret <4 x i32> [[TMP3]]
@@ -1819,7 +1819,7 @@
// CHECK-NEXT: [[TMP0:%.*]] = bitcast <4 x i32> [[A:%.*]] to <8 x i16>
// CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[B:%.*]] to i16
// CHECK-NEXT: [[TMP2:%.*]] = insertelement <8 x i16> undef, i16 [[TMP1]], i32 0
-// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <8 x i16> [[TMP2]], <8 x i16> undef, <8 x i32> zeroinitializer
+// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <8 x i16> [[TMP2]], <8 x i16> poison, <8 x i32> zeroinitializer
// CHECK-NEXT: [[SHL_I:%.*]] = shl <8 x i16> [[TMP0]], [[SH_PROM_I]]
// CHECK-NEXT: [[TMP3:%.*]] = bitcast <8 x i16> [[SHL_I]] to <4 x i32>
// CHECK-NEXT: ret <4 x i32> [[TMP3]]
@@ -1833,7 +1833,7 @@
// CHECK-NEXT: [[TMP0:%.*]] = bitcast <4 x i32> [[A:%.*]] to <8 x i16>
// CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[B:%.*]] to i16
// CHECK-NEXT: [[TMP2:%.*]] = insertelement <8 x i16> undef, i16 [[TMP1]], i32 0
-// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <8 x i16> [[TMP2]], <8 x i16> undef, <8 x i32> zeroinitializer
+// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <8 x i16> [[TMP2]], <8 x i16> poison, <8 x i32> zeroinitializer
// CHECK-NEXT: [[SHR_I:%.*]] = ashr <8 x i16> [[TMP0]], [[SH_PROM_I]]
// CHECK-NEXT: [[TMP3:%.*]] = bitcast <8 x i16> [[SHR_I]] to <4 x i32>
// CHECK-NEXT: ret <4 x i32> [[TMP3]]
@@ -1847,7 +1847,7 @@
// CHECK-NEXT: [[TMP0:%.*]] = bitcast <4 x i32> [[A:%.*]] to <8 x i16>
// CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[B:%.*]] to i16
// CHECK-NEXT: [[TMP2:%.*]] = insertelement <8 x i16> undef, i16 [[TMP1]], i32 0
-// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <8 x i16> [[TMP2]], <8 x i16> undef, <8 x i32> zeroinitializer
+// CHECK-NEXT: [[SH_PROM_I:%.*]] = shufflevector <8 x i16> [[TMP2]], <8 x i16> poison, <8 x i32> zeroinitializer
// CHECK-NEXT: [[SHR_I:%.*]] = lshr <8 x i16> [[TMP0]], [[SH_PROM_I]]
// CHECK-NEXT: [[TMP3:%.*]] = bitcast <8 x i16> [[SHR_I]] to <4 x i32>
// CHECK-NEXT: ret <4 x i32> [[TMP3]]
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