[llvm] 022bd92 - [LowerMatrixMultiplication] Switch dummy values from undef to poison [NFC]
Nuno Lopes via llvm-commits
llvm-commits at lists.llvm.org
Sun Jul 3 04:32:26 PDT 2022
Author: Nuno Lopes
Date: 2022-07-03T12:32:19+01:00
New Revision: 022bd92c78ed4e810b56a28d635fbe7b3c4a49f1
URL: https://github.com/llvm/llvm-project/commit/022bd92c78ed4e810b56a28d635fbe7b3c4a49f1
DIFF: https://github.com/llvm/llvm-project/commit/022bd92c78ed4e810b56a28d635fbe7b3c4a49f1.diff
LOG: [LowerMatrixMultiplication] Switch dummy values from undef to poison [NFC]
Added:
Modified:
llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
llvm/test/Transforms/LowerMatrixIntrinsics/bigger-expressions-double.ll
llvm/test/Transforms/LowerMatrixIntrinsics/multiply-right-transpose.ll
llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backward.ll
llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backwards-unsupported.ll
llvm/test/Transforms/LowerMatrixIntrinsics/propagate-forward.ll
llvm/test/Transforms/LowerMatrixIntrinsics/propagate-mixed-users.ll
llvm/test/Transforms/LowerMatrixIntrinsics/propagate-multiple-iterations.ll
llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double-row-major.ll
llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double.ll
llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float-row-major.ll
llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float.ll
llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32-row-major.ll
llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32.ll
llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts-iterator-invalidation.ll
llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts.ll
Removed:
################################################################################
diff --git a/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp b/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
index 65235a3398e7..c05906649f16 100644
--- a/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
+++ b/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
@@ -888,27 +888,27 @@ class LowerMatrixIntrinsics {
// having to update as many def-use and use-def chains.
//
// Because we add to ToRemove during fusion we can't guarantee that defs
- // are before uses. Change uses to undef temporarily as these should get
+ // are before uses. Change uses to poison temporarily as these should get
// removed as well.
//
- // For verification, we keep track of where we changed uses to undefs in
- // UndefedInsts and then check that we in fact remove them.
- SmallSet<Instruction *, 16> UndefedInsts;
+ // For verification, we keep track of where we changed uses to poison in
+ // PoisonedInsts and then check that we in fact remove them.
+ SmallSet<Instruction *, 16> PoisonedInsts;
for (auto *Inst : reverse(ToRemove)) {
for (Use &U : llvm::make_early_inc_range(Inst->uses())) {
- if (auto *Undefed = dyn_cast<Instruction>(U.getUser()))
- UndefedInsts.insert(Undefed);
- U.set(UndefValue::get(Inst->getType()));
+ if (auto *Poisoned = dyn_cast<Instruction>(U.getUser()))
+ PoisonedInsts.insert(Poisoned);
+ U.set(PoisonValue::get(Inst->getType()));
}
Inst->eraseFromParent();
- UndefedInsts.erase(Inst);
+ PoisonedInsts.erase(Inst);
}
- if (!UndefedInsts.empty()) {
- // If we didn't remove all undefed instructions, it's a hard error.
- dbgs() << "Undefed but present instructions:\n";
- for (auto *I : UndefedInsts)
+ if (!PoisonedInsts.empty()) {
+ // If we didn't remove all poisoned instructions, it's a hard error.
+ dbgs() << "Poisoned but present instructions:\n";
+ for (auto *I : PoisonedInsts)
dbgs() << *I << "\n";
- llvm_unreachable("Undefed but instruction not removed");
+ llvm_unreachable("Poisoned but instruction not removed");
}
return Changed;
@@ -1667,7 +1667,7 @@ class LowerMatrixIntrinsics {
for (unsigned I = 0; I < NewNumVecs; ++I) {
// Build a single result vector. First initialize it.
- Value *ResultVector = UndefValue::get(
+ Value *ResultVector = PoisonValue::get(
FixedVectorType::get(VectorTy->getElementType(), NewNumElts));
// Go through the old elements and insert it into the resulting vector.
for (auto J : enumerate(InputMatrix.vectors())) {
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/bigger-expressions-double.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/bigger-expressions-double.ll
index be086cf86cbd..cf0731edc157 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/bigger-expressions-double.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/bigger-expressions-double.ll
@@ -23,19 +23,19 @@ define void @transpose_multiply(<9 x double>* %A.Ptr, <9 x double>* %B.Ptr, <9 x
; CHECK-NEXT: [[VEC_CAST12:%.*]] = bitcast double* [[VEC_GEP11]] to <3 x double>*
; CHECK-NEXT: [[COL_LOAD13:%.*]] = load <3 x double>, <3 x double>* [[VEC_CAST12]], align 8
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <3 x double> [[COL_LOAD]], i64 0
-; CHECK-NEXT: [[TMP3:%.*]] = insertelement <3 x double> undef, double [[TMP2]], i64 0
+; CHECK-NEXT: [[TMP3:%.*]] = insertelement <3 x double> poison, double [[TMP2]], i64 0
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <3 x double> [[COL_LOAD2]], i64 0
; CHECK-NEXT: [[TMP5:%.*]] = insertelement <3 x double> [[TMP3]], double [[TMP4]], i64 1
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <3 x double> [[COL_LOAD5]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <3 x double> [[TMP5]], double [[TMP6]], i64 2
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <3 x double> [[COL_LOAD]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <3 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <3 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <3 x double> [[COL_LOAD2]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <3 x double> [[TMP9]], double [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <3 x double> [[COL_LOAD5]], i64 1
; CHECK-NEXT: [[TMP13:%.*]] = insertelement <3 x double> [[TMP11]], double [[TMP12]], i64 2
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <3 x double> [[COL_LOAD]], i64 2
-; CHECK-NEXT: [[TMP15:%.*]] = insertelement <3 x double> undef, double [[TMP14]], i64 0
+; CHECK-NEXT: [[TMP15:%.*]] = insertelement <3 x double> poison, double [[TMP14]], i64 0
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <3 x double> [[COL_LOAD2]], i64 2
; CHECK-NEXT: [[TMP17:%.*]] = insertelement <3 x double> [[TMP15]], double [[TMP16]], i64 1
; CHECK-NEXT: [[TMP18:%.*]] = extractelement <3 x double> [[COL_LOAD5]], i64 2
@@ -269,19 +269,19 @@ define void @transpose_multiply_add(<9 x double>* %A.Ptr, <9 x double>* %B.Ptr,
; CHECK-NEXT: [[VEC_CAST12:%.*]] = bitcast double* [[VEC_GEP11]] to <3 x double>*
; CHECK-NEXT: [[COL_LOAD13:%.*]] = load <3 x double>, <3 x double>* [[VEC_CAST12]], align 8
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <3 x double> [[COL_LOAD]], i64 0
-; CHECK-NEXT: [[TMP3:%.*]] = insertelement <3 x double> undef, double [[TMP2]], i64 0
+; CHECK-NEXT: [[TMP3:%.*]] = insertelement <3 x double> poison, double [[TMP2]], i64 0
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <3 x double> [[COL_LOAD2]], i64 0
; CHECK-NEXT: [[TMP5:%.*]] = insertelement <3 x double> [[TMP3]], double [[TMP4]], i64 1
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <3 x double> [[COL_LOAD5]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <3 x double> [[TMP5]], double [[TMP6]], i64 2
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <3 x double> [[COL_LOAD]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <3 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <3 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <3 x double> [[COL_LOAD2]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <3 x double> [[TMP9]], double [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <3 x double> [[COL_LOAD5]], i64 1
; CHECK-NEXT: [[TMP13:%.*]] = insertelement <3 x double> [[TMP11]], double [[TMP12]], i64 2
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <3 x double> [[COL_LOAD]], i64 2
-; CHECK-NEXT: [[TMP15:%.*]] = insertelement <3 x double> undef, double [[TMP14]], i64 0
+; CHECK-NEXT: [[TMP15:%.*]] = insertelement <3 x double> poison, double [[TMP14]], i64 0
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <3 x double> [[COL_LOAD2]], i64 2
; CHECK-NEXT: [[TMP17:%.*]] = insertelement <3 x double> [[TMP15]], double [[TMP16]], i64 1
; CHECK-NEXT: [[TMP18:%.*]] = extractelement <3 x double> [[COL_LOAD5]], i64 2
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/multiply-right-transpose.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/multiply-right-transpose.ll
index 7044e00a5d25..9a7948d16645 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/multiply-right-transpose.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/multiply-right-transpose.ll
@@ -77,13 +77,13 @@ define <4 x double> @multiply_right_transpose_2x3x2(<6 x double> %a, <6 x double
; CHECK-NEXT: [[SPLIT40:%.*]] = shufflevector <6 x double> [[B]], <6 x double> poison, <2 x i32> <i32 2, i32 3>
; CHECK-NEXT: [[SPLIT41:%.*]] = shufflevector <6 x double> [[B]], <6 x double> poison, <2 x i32> <i32 4, i32 5>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <2 x double> [[SPLIT39]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <3 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <3 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x double> [[SPLIT40]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <3 x double> [[TMP1]], double [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[SPLIT41]], i64 0
; CHECK-NEXT: [[TMP5:%.*]] = insertelement <3 x double> [[TMP3]], double [[TMP4]], i64 2
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[SPLIT39]], i64 1
-; CHECK-NEXT: [[TMP7:%.*]] = insertelement <3 x double> undef, double [[TMP6]], i64 0
+; CHECK-NEXT: [[TMP7:%.*]] = insertelement <3 x double> poison, double [[TMP6]], i64 0
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x double> [[SPLIT40]], i64 1
; CHECK-NEXT: [[TMP9:%.*]] = insertelement <3 x double> [[TMP7]], double [[TMP8]], i64 1
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x double> [[SPLIT41]], i64 1
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backward.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backward.ll
index 4a7df1fce032..e2d450df451a 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backward.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backward.ll
@@ -17,7 +17,7 @@ define <8 x double> @fadd_transpose(<8 x double> %a, <8 x double> %b) {
; CHECK-NEXT: [[TMP2:%.*]] = fadd <2 x double> [[SPLIT2]], [[SPLIT6]]
; CHECK-NEXT: [[TMP3:%.*]] = fadd <2 x double> [[SPLIT3]], [[SPLIT7]]
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[TMP0]], i64 0
-; CHECK-NEXT: [[TMP5:%.*]] = insertelement <4 x double> undef, double [[TMP4]], i64 0
+; CHECK-NEXT: [[TMP5:%.*]] = insertelement <4 x double> poison, double [[TMP4]], i64 0
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[TMP1]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x double> [[TMP5]], double [[TMP6]], i64 1
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x double> [[TMP2]], i64 0
@@ -25,7 +25,7 @@ define <8 x double> @fadd_transpose(<8 x double> %a, <8 x double> %b) {
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x double> [[TMP3]], i64 0
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> [[TMP9]], double [[TMP10]], i64 3
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x double> [[TMP0]], i64 1
-; CHECK-NEXT: [[TMP13:%.*]] = insertelement <4 x double> undef, double [[TMP12]], i64 0
+; CHECK-NEXT: [[TMP13:%.*]] = insertelement <4 x double> poison, double [[TMP12]], i64 0
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <2 x double> [[TMP1]], i64 1
; CHECK-NEXT: [[TMP15:%.*]] = insertelement <4 x double> [[TMP13]], double [[TMP14]], i64 1
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <2 x double> [[TMP2]], i64 1
@@ -65,7 +65,7 @@ define <8 x double> @load_fadd_transpose(<8 x double>* %A.Ptr, <8 x double> %b)
; CHECK-NEXT: [[TMP3:%.*]] = fadd <2 x double> [[COL_LOAD5]], [[SPLIT10]]
; CHECK-NEXT: [[TMP4:%.*]] = fadd <2 x double> [[COL_LOAD8]], [[SPLIT11]]
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x double> [[TMP1]], i64 0
-; CHECK-NEXT: [[TMP6:%.*]] = insertelement <4 x double> undef, double [[TMP5]], i64 0
+; CHECK-NEXT: [[TMP6:%.*]] = insertelement <4 x double> poison, double [[TMP5]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = extractelement <2 x double> [[TMP2]], i64 0
; CHECK-NEXT: [[TMP8:%.*]] = insertelement <4 x double> [[TMP6]], double [[TMP7]], i64 1
; CHECK-NEXT: [[TMP9:%.*]] = extractelement <2 x double> [[TMP3]], i64 0
@@ -73,7 +73,7 @@ define <8 x double> @load_fadd_transpose(<8 x double>* %A.Ptr, <8 x double> %b)
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <2 x double> [[TMP4]], i64 0
; CHECK-NEXT: [[TMP12:%.*]] = insertelement <4 x double> [[TMP10]], double [[TMP11]], i64 3
; CHECK-NEXT: [[TMP13:%.*]] = extractelement <2 x double> [[TMP1]], i64 1
-; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x double> undef, double [[TMP13]], i64 0
+; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x double> poison, double [[TMP13]], i64 0
; CHECK-NEXT: [[TMP15:%.*]] = extractelement <2 x double> [[TMP2]], i64 1
; CHECK-NEXT: [[TMP16:%.*]] = insertelement <4 x double> [[TMP14]], double [[TMP15]], i64 1
; CHECK-NEXT: [[TMP17:%.*]] = extractelement <2 x double> [[TMP3]], i64 1
@@ -112,7 +112,7 @@ define <8 x double> @load_fneg_transpose(<8 x double>* %A.Ptr) {
; CHECK-NEXT: [[TMP3:%.*]] = fneg <2 x double> [[COL_LOAD5]]
; CHECK-NEXT: [[TMP4:%.*]] = fneg <2 x double> [[COL_LOAD8]]
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x double> [[TMP1]], i64 0
-; CHECK-NEXT: [[TMP6:%.*]] = insertelement <4 x double> undef, double [[TMP5]], i64 0
+; CHECK-NEXT: [[TMP6:%.*]] = insertelement <4 x double> poison, double [[TMP5]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = extractelement <2 x double> [[TMP2]], i64 0
; CHECK-NEXT: [[TMP8:%.*]] = insertelement <4 x double> [[TMP6]], double [[TMP7]], i64 1
; CHECK-NEXT: [[TMP9:%.*]] = extractelement <2 x double> [[TMP3]], i64 0
@@ -120,7 +120,7 @@ define <8 x double> @load_fneg_transpose(<8 x double>* %A.Ptr) {
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <2 x double> [[TMP4]], i64 0
; CHECK-NEXT: [[TMP12:%.*]] = insertelement <4 x double> [[TMP10]], double [[TMP11]], i64 3
; CHECK-NEXT: [[TMP13:%.*]] = extractelement <2 x double> [[TMP1]], i64 1
-; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x double> undef, double [[TMP13]], i64 0
+; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x double> poison, double [[TMP13]], i64 0
; CHECK-NEXT: [[TMP15:%.*]] = extractelement <2 x double> [[TMP2]], i64 1
; CHECK-NEXT: [[TMP16:%.*]] = insertelement <4 x double> [[TMP14]], double [[TMP15]], i64 1
; CHECK-NEXT: [[TMP17:%.*]] = extractelement <2 x double> [[TMP3]], i64 1
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backwards-unsupported.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backwards-unsupported.ll
index ed4eff14a4cf..92f0ca79f884 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backwards-unsupported.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-backwards-unsupported.ll
@@ -11,19 +11,19 @@ define <9 x double> @unsupported_phi(i1 %cond, <9 x double> %A, <9 x double> %B,
; CHECK-NEXT: [[SPLIT4:%.*]] = shufflevector <9 x double> [[A]], <9 x double> poison, <3 x i32> <i32 3, i32 4, i32 5>
; CHECK-NEXT: [[SPLIT5:%.*]] = shufflevector <9 x double> [[A]], <9 x double> poison, <3 x i32> <i32 6, i32 7, i32 8>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <3 x double> [[SPLIT3]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <3 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <3 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <3 x double> [[SPLIT4]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <3 x double> [[TMP1]], double [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <3 x double> [[SPLIT5]], i64 0
; CHECK-NEXT: [[TMP5:%.*]] = insertelement <3 x double> [[TMP3]], double [[TMP4]], i64 2
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <3 x double> [[SPLIT3]], i64 1
-; CHECK-NEXT: [[TMP7:%.*]] = insertelement <3 x double> undef, double [[TMP6]], i64 0
+; CHECK-NEXT: [[TMP7:%.*]] = insertelement <3 x double> poison, double [[TMP6]], i64 0
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <3 x double> [[SPLIT4]], i64 1
; CHECK-NEXT: [[TMP9:%.*]] = insertelement <3 x double> [[TMP7]], double [[TMP8]], i64 1
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <3 x double> [[SPLIT5]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <3 x double> [[TMP9]], double [[TMP10]], i64 2
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <3 x double> [[SPLIT3]], i64 2
-; CHECK-NEXT: [[TMP13:%.*]] = insertelement <3 x double> undef, double [[TMP12]], i64 0
+; CHECK-NEXT: [[TMP13:%.*]] = insertelement <3 x double> poison, double [[TMP12]], i64 0
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <3 x double> [[SPLIT4]], i64 2
; CHECK-NEXT: [[TMP15:%.*]] = insertelement <3 x double> [[TMP13]], double [[TMP14]], i64 1
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <3 x double> [[SPLIT5]], i64 2
@@ -37,19 +37,19 @@ define <9 x double> @unsupported_phi(i1 %cond, <9 x double> %A, <9 x double> %B,
; CHECK-NEXT: [[SPLIT1:%.*]] = shufflevector <9 x double> [[B]], <9 x double> poison, <3 x i32> <i32 3, i32 4, i32 5>
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <9 x double> [[B]], <9 x double> poison, <3 x i32> <i32 6, i32 7, i32 8>
; CHECK-NEXT: [[TMP21:%.*]] = extractelement <3 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP22:%.*]] = insertelement <3 x double> undef, double [[TMP21]], i64 0
+; CHECK-NEXT: [[TMP22:%.*]] = insertelement <3 x double> poison, double [[TMP21]], i64 0
; CHECK-NEXT: [[TMP23:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP24:%.*]] = insertelement <3 x double> [[TMP22]], double [[TMP23]], i64 1
; CHECK-NEXT: [[TMP25:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 0
; CHECK-NEXT: [[TMP26:%.*]] = insertelement <3 x double> [[TMP24]], double [[TMP25]], i64 2
; CHECK-NEXT: [[TMP27:%.*]] = extractelement <3 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP28:%.*]] = insertelement <3 x double> undef, double [[TMP27]], i64 0
+; CHECK-NEXT: [[TMP28:%.*]] = insertelement <3 x double> poison, double [[TMP27]], i64 0
; CHECK-NEXT: [[TMP29:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP30:%.*]] = insertelement <3 x double> [[TMP28]], double [[TMP29]], i64 1
; CHECK-NEXT: [[TMP31:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 1
; CHECK-NEXT: [[TMP32:%.*]] = insertelement <3 x double> [[TMP30]], double [[TMP31]], i64 2
; CHECK-NEXT: [[TMP33:%.*]] = extractelement <3 x double> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP34:%.*]] = insertelement <3 x double> undef, double [[TMP33]], i64 0
+; CHECK-NEXT: [[TMP34:%.*]] = insertelement <3 x double> poison, double [[TMP33]], i64 0
; CHECK-NEXT: [[TMP35:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 2
; CHECK-NEXT: [[TMP36:%.*]] = insertelement <3 x double> [[TMP34]], double [[TMP35]], i64 1
; CHECK-NEXT: [[TMP37:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 2
@@ -269,19 +269,19 @@ define <9 x double> @unsupported_call(i1 %cond, <9 x double> %A, <9 x double> %B
; CHECK-NEXT: [[SPLIT1:%.*]] = shufflevector <9 x double> [[A]], <9 x double> poison, <3 x i32> <i32 3, i32 4, i32 5>
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <9 x double> [[A]], <9 x double> poison, <3 x i32> <i32 6, i32 7, i32 8>
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <3 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP2:%.*]] = insertelement <3 x double> undef, double [[TMP1]], i64 0
+; CHECK-NEXT: [[TMP2:%.*]] = insertelement <3 x double> poison, double [[TMP1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP4:%.*]] = insertelement <3 x double> [[TMP2]], double [[TMP3]], i64 1
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 0
; CHECK-NEXT: [[TMP6:%.*]] = insertelement <3 x double> [[TMP4]], double [[TMP5]], i64 2
; CHECK-NEXT: [[TMP7:%.*]] = extractelement <3 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP8:%.*]] = insertelement <3 x double> undef, double [[TMP7]], i64 0
+; CHECK-NEXT: [[TMP8:%.*]] = insertelement <3 x double> poison, double [[TMP7]], i64 0
; CHECK-NEXT: [[TMP9:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP10:%.*]] = insertelement <3 x double> [[TMP8]], double [[TMP9]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = insertelement <3 x double> [[TMP10]], double [[TMP11]], i64 2
; CHECK-NEXT: [[TMP13:%.*]] = extractelement <3 x double> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP14:%.*]] = insertelement <3 x double> undef, double [[TMP13]], i64 0
+; CHECK-NEXT: [[TMP14:%.*]] = insertelement <3 x double> poison, double [[TMP13]], i64 0
; CHECK-NEXT: [[TMP15:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 2
; CHECK-NEXT: [[TMP16:%.*]] = insertelement <3 x double> [[TMP14]], double [[TMP15]], i64 1
; CHECK-NEXT: [[TMP17:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 2
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-forward.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-forward.ll
index cff3ae4987e3..2e1c654bff5f 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-forward.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-forward.ll
@@ -11,7 +11,7 @@ define void @transpose_store(<8 x double> %a, <8 x double>* %Ptr) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 4, i32 5>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <2 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x double> [[TMP1]], double [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 0
@@ -19,7 +19,7 @@ define void @transpose_store(<8 x double> %a, <8 x double>* %Ptr) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x double> [[TMP5]], double [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> [[TMP9]], double [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 1
@@ -50,7 +50,7 @@ define <8 x double> @transpose_fadd(<8 x double> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 4, i32 5>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <2 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x double> [[TMP1]], double [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 0
@@ -58,7 +58,7 @@ define <8 x double> @transpose_fadd(<8 x double> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x double> [[TMP5]], double [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> [[TMP9]], double [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 1
@@ -86,7 +86,7 @@ define <8 x double> @transpose_fmul(<8 x double> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 4, i32 5>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <2 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x double> [[TMP1]], double [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 0
@@ -94,7 +94,7 @@ define <8 x double> @transpose_fmul(<8 x double> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x double> [[TMP5]], double [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> [[TMP9]], double [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 1
@@ -122,7 +122,7 @@ define <8 x double> @transpose_fneg(<8 x double> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 4, i32 5>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <2 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x double> [[TMP1]], double [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 0
@@ -130,7 +130,7 @@ define <8 x double> @transpose_fneg(<8 x double> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x double> [[TMP5]], double [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> [[TMP9]], double [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 1
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-mixed-users.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-mixed-users.ll
index 9c862ea8e2bd..c6da1e4fad02 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-mixed-users.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-mixed-users.ll
@@ -8,19 +8,19 @@ define <8 x double> @strided_load_4x4(<8 x double> %in, <8 x double>* %Ptr) {
; CHECK-NEXT: [[SPLIT:%.*]] = shufflevector <8 x double> [[IN:%.*]], <8 x double> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[SPLIT1:%.*]] = shufflevector <8 x double> [[IN]], <8 x double> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <4 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP2:%.*]] = insertelement <2 x double> undef, double [[TMP1]], i64 0
+; CHECK-NEXT: [[TMP2:%.*]] = insertelement <2 x double> poison, double [[TMP1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP4:%.*]] = insertelement <2 x double> [[TMP2]], double [[TMP3]], i64 1
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP6:%.*]] = insertelement <2 x double> undef, double [[TMP5]], i64 0
+; CHECK-NEXT: [[TMP6:%.*]] = insertelement <2 x double> poison, double [[TMP5]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP8:%.*]] = insertelement <2 x double> [[TMP6]], double [[TMP7]], i64 1
; CHECK-NEXT: [[TMP9:%.*]] = extractelement <4 x double> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP10:%.*]] = insertelement <2 x double> undef, double [[TMP9]], i64 0
+; CHECK-NEXT: [[TMP10:%.*]] = insertelement <2 x double> poison, double [[TMP9]], i64 0
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 2
; CHECK-NEXT: [[TMP12:%.*]] = insertelement <2 x double> [[TMP10]], double [[TMP11]], i64 1
; CHECK-NEXT: [[TMP13:%.*]] = extractelement <4 x double> [[SPLIT]], i64 3
-; CHECK-NEXT: [[TMP14:%.*]] = insertelement <2 x double> undef, double [[TMP13]], i64 0
+; CHECK-NEXT: [[TMP14:%.*]] = insertelement <2 x double> poison, double [[TMP13]], i64 0
; CHECK-NEXT: [[TMP15:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 3
; CHECK-NEXT: [[TMP16:%.*]] = insertelement <2 x double> [[TMP14]], double [[TMP15]], i64 1
; CHECK-NEXT: [[TMP17:%.*]] = shufflevector <2 x double> [[TMP4]], <2 x double> [[TMP8]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-multiple-iterations.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-multiple-iterations.ll
index 98edeccf8cda..b757f49bdde1 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-multiple-iterations.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/propagate-multiple-iterations.ll
@@ -20,7 +20,7 @@ define <16 x double> @backpropagation_iterations(<16 x double>* %A.Ptr, <16 x do
; CHECK-NEXT: [[VEC_CAST7:%.*]] = bitcast double* [[VEC_GEP6]] to <4 x double>*
; CHECK-NEXT: [[COL_LOAD8:%.*]] = load <4 x double>, <4 x double>* [[VEC_CAST7]], align 8
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <4 x double> [[COL_LOAD]], i64 0
-; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x double> undef, double [[TMP2]], i64 0
+; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x double> poison, double [[TMP2]], i64 0
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <4 x double> [[COL_LOAD2]], i64 0
; CHECK-NEXT: [[TMP5:%.*]] = insertelement <4 x double> [[TMP3]], double [[TMP4]], i64 1
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <4 x double> [[COL_LOAD5]], i64 0
@@ -28,7 +28,7 @@ define <16 x double> @backpropagation_iterations(<16 x double>* %A.Ptr, <16 x do
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <4 x double> [[COL_LOAD8]], i64 0
; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> [[TMP7]], double [[TMP8]], i64 3
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <4 x double> [[COL_LOAD]], i64 1
-; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> undef, double [[TMP10]], i64 0
+; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> poison, double [[TMP10]], i64 0
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <4 x double> [[COL_LOAD2]], i64 1
; CHECK-NEXT: [[TMP13:%.*]] = insertelement <4 x double> [[TMP11]], double [[TMP12]], i64 1
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <4 x double> [[COL_LOAD5]], i64 1
@@ -36,7 +36,7 @@ define <16 x double> @backpropagation_iterations(<16 x double>* %A.Ptr, <16 x do
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <4 x double> [[COL_LOAD8]], i64 1
; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x double> [[TMP15]], double [[TMP16]], i64 3
; CHECK-NEXT: [[TMP18:%.*]] = extractelement <4 x double> [[COL_LOAD]], i64 2
-; CHECK-NEXT: [[TMP19:%.*]] = insertelement <4 x double> undef, double [[TMP18]], i64 0
+; CHECK-NEXT: [[TMP19:%.*]] = insertelement <4 x double> poison, double [[TMP18]], i64 0
; CHECK-NEXT: [[TMP20:%.*]] = extractelement <4 x double> [[COL_LOAD2]], i64 2
; CHECK-NEXT: [[TMP21:%.*]] = insertelement <4 x double> [[TMP19]], double [[TMP20]], i64 1
; CHECK-NEXT: [[TMP22:%.*]] = extractelement <4 x double> [[COL_LOAD5]], i64 2
@@ -44,7 +44,7 @@ define <16 x double> @backpropagation_iterations(<16 x double>* %A.Ptr, <16 x do
; CHECK-NEXT: [[TMP24:%.*]] = extractelement <4 x double> [[COL_LOAD8]], i64 2
; CHECK-NEXT: [[TMP25:%.*]] = insertelement <4 x double> [[TMP23]], double [[TMP24]], i64 3
; CHECK-NEXT: [[TMP26:%.*]] = extractelement <4 x double> [[COL_LOAD]], i64 3
-; CHECK-NEXT: [[TMP27:%.*]] = insertelement <4 x double> undef, double [[TMP26]], i64 0
+; CHECK-NEXT: [[TMP27:%.*]] = insertelement <4 x double> poison, double [[TMP26]], i64 0
; CHECK-NEXT: [[TMP28:%.*]] = extractelement <4 x double> [[COL_LOAD2]], i64 3
; CHECK-NEXT: [[TMP29:%.*]] = insertelement <4 x double> [[TMP27]], double [[TMP28]], i64 1
; CHECK-NEXT: [[TMP30:%.*]] = extractelement <4 x double> [[COL_LOAD5]], i64 3
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double-row-major.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double-row-major.ll
index 04e3fcf3735d..13a727358f95 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double-row-major.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double-row-major.ll
@@ -7,19 +7,19 @@ define <8 x double> @transpose(<8 x double> %a) {
; RM-NEXT: [[SPLIT:%.*]] = shufflevector <8 x double> [[A:%.*]], <8 x double> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
; RM-NEXT: [[SPLIT1:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; RM-NEXT: [[TMP0:%.*]] = extractelement <4 x double> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <2 x double> undef, double [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <2 x double> poison, double [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <2 x double> [[TMP1]], double [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <4 x double> [[SPLIT]], i64 1
-; RM-NEXT: [[TMP5:%.*]] = insertelement <2 x double> undef, double [[TMP4]], i64 0
+; RM-NEXT: [[TMP5:%.*]] = insertelement <2 x double> poison, double [[TMP4]], i64 0
; RM-NEXT: [[TMP6:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 1
; RM-NEXT: [[TMP7:%.*]] = insertelement <2 x double> [[TMP5]], double [[TMP6]], i64 1
; RM-NEXT: [[TMP8:%.*]] = extractelement <4 x double> [[SPLIT]], i64 2
-; RM-NEXT: [[TMP9:%.*]] = insertelement <2 x double> undef, double [[TMP8]], i64 0
+; RM-NEXT: [[TMP9:%.*]] = insertelement <2 x double> poison, double [[TMP8]], i64 0
; RM-NEXT: [[TMP10:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 2
; RM-NEXT: [[TMP11:%.*]] = insertelement <2 x double> [[TMP9]], double [[TMP10]], i64 1
; RM-NEXT: [[TMP12:%.*]] = extractelement <4 x double> [[SPLIT]], i64 3
-; RM-NEXT: [[TMP13:%.*]] = insertelement <2 x double> undef, double [[TMP12]], i64 0
+; RM-NEXT: [[TMP13:%.*]] = insertelement <2 x double> poison, double [[TMP12]], i64 0
; RM-NEXT: [[TMP14:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 3
; RM-NEXT: [[TMP15:%.*]] = insertelement <2 x double> [[TMP13]], double [[TMP14]], i64 1
; RM-NEXT: [[TMP16:%.*]] = shufflevector <2 x double> [[TMP3]], <2 x double> [[TMP7]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
@@ -46,7 +46,7 @@ define <8 x double> @transpose_single_column(<8 x double> %a) {
; RM-NEXT: [[SPLIT6:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <1 x i32> <i32 6>
; RM-NEXT: [[SPLIT7:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <1 x i32> <i32 7>
; RM-NEXT: [[TMP0:%.*]] = extractelement <1 x double> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <8 x double> undef, double [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <8 x double> poison, double [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <1 x double> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <8 x double> [[TMP1]], double [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <1 x double> [[SPLIT2]], i64 0
@@ -77,25 +77,25 @@ define <12 x double> @transpose_double_3x4(<12 x double> %a) {
; RM-NEXT: [[SPLIT1:%.*]] = shufflevector <12 x double> [[A]], <12 x double> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; RM-NEXT: [[SPLIT2:%.*]] = shufflevector <12 x double> [[A]], <12 x double> poison, <4 x i32> <i32 8, i32 9, i32 10, i32 11>
; RM-NEXT: [[TMP0:%.*]] = extractelement <4 x double> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <3 x double> undef, double [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <3 x double> poison, double [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <3 x double> [[TMP1]], double [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <4 x double> [[SPLIT2]], i64 0
; RM-NEXT: [[TMP5:%.*]] = insertelement <3 x double> [[TMP3]], double [[TMP4]], i64 2
; RM-NEXT: [[TMP6:%.*]] = extractelement <4 x double> [[SPLIT]], i64 1
-; RM-NEXT: [[TMP7:%.*]] = insertelement <3 x double> undef, double [[TMP6]], i64 0
+; RM-NEXT: [[TMP7:%.*]] = insertelement <3 x double> poison, double [[TMP6]], i64 0
; RM-NEXT: [[TMP8:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 1
; RM-NEXT: [[TMP9:%.*]] = insertelement <3 x double> [[TMP7]], double [[TMP8]], i64 1
; RM-NEXT: [[TMP10:%.*]] = extractelement <4 x double> [[SPLIT2]], i64 1
; RM-NEXT: [[TMP11:%.*]] = insertelement <3 x double> [[TMP9]], double [[TMP10]], i64 2
; RM-NEXT: [[TMP12:%.*]] = extractelement <4 x double> [[SPLIT]], i64 2
-; RM-NEXT: [[TMP13:%.*]] = insertelement <3 x double> undef, double [[TMP12]], i64 0
+; RM-NEXT: [[TMP13:%.*]] = insertelement <3 x double> poison, double [[TMP12]], i64 0
; RM-NEXT: [[TMP14:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 2
; RM-NEXT: [[TMP15:%.*]] = insertelement <3 x double> [[TMP13]], double [[TMP14]], i64 1
; RM-NEXT: [[TMP16:%.*]] = extractelement <4 x double> [[SPLIT2]], i64 2
; RM-NEXT: [[TMP17:%.*]] = insertelement <3 x double> [[TMP15]], double [[TMP16]], i64 2
; RM-NEXT: [[TMP18:%.*]] = extractelement <4 x double> [[SPLIT]], i64 3
-; RM-NEXT: [[TMP19:%.*]] = insertelement <3 x double> undef, double [[TMP18]], i64 0
+; RM-NEXT: [[TMP19:%.*]] = insertelement <3 x double> poison, double [[TMP18]], i64 0
; RM-NEXT: [[TMP20:%.*]] = extractelement <4 x double> [[SPLIT1]], i64 3
; RM-NEXT: [[TMP21:%.*]] = insertelement <3 x double> [[TMP19]], double [[TMP20]], i64 1
; RM-NEXT: [[TMP22:%.*]] = extractelement <4 x double> [[SPLIT2]], i64 3
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double.ll
index 8d97e95cf0cf..fd17aa253b58 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-double.ll
@@ -10,7 +10,7 @@ define <8 x double> @transpose(<8 x double> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 4, i32 5>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <8 x double> [[A]], <8 x double> poison, <2 x i32> <i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <2 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x double> [[TMP1]], double [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 0
@@ -18,7 +18,7 @@ define <8 x double> @transpose(<8 x double> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x double> [[TMP5]], double [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> [[TMP9]], double [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x double> [[SPLIT2]], i64 1
@@ -40,21 +40,21 @@ define <8 x double> @transpose_single_column(<8 x double> %a) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SPLIT:%.*]] = shufflevector <8 x double> [[A:%.*]], <8 x double> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <8 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <1 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <1 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <8 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP3:%.*]] = insertelement <1 x double> undef, double [[TMP2]], i64 0
+; CHECK-NEXT: [[TMP3:%.*]] = insertelement <1 x double> poison, double [[TMP2]], i64 0
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <8 x double> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP5:%.*]] = insertelement <1 x double> undef, double [[TMP4]], i64 0
+; CHECK-NEXT: [[TMP5:%.*]] = insertelement <1 x double> poison, double [[TMP4]], i64 0
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <8 x double> [[SPLIT]], i64 3
-; CHECK-NEXT: [[TMP7:%.*]] = insertelement <1 x double> undef, double [[TMP6]], i64 0
+; CHECK-NEXT: [[TMP7:%.*]] = insertelement <1 x double> poison, double [[TMP6]], i64 0
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <8 x double> [[SPLIT]], i64 4
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <1 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <1 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <8 x double> [[SPLIT]], i64 5
-; CHECK-NEXT: [[TMP11:%.*]] = insertelement <1 x double> undef, double [[TMP10]], i64 0
+; CHECK-NEXT: [[TMP11:%.*]] = insertelement <1 x double> poison, double [[TMP10]], i64 0
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <8 x double> [[SPLIT]], i64 6
-; CHECK-NEXT: [[TMP13:%.*]] = insertelement <1 x double> undef, double [[TMP12]], i64 0
+; CHECK-NEXT: [[TMP13:%.*]] = insertelement <1 x double> poison, double [[TMP12]], i64 0
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <8 x double> [[SPLIT]], i64 7
-; CHECK-NEXT: [[TMP15:%.*]] = insertelement <1 x double> undef, double [[TMP14]], i64 0
+; CHECK-NEXT: [[TMP15:%.*]] = insertelement <1 x double> poison, double [[TMP14]], i64 0
; CHECK-NEXT: [[TMP16:%.*]] = shufflevector <1 x double> [[TMP1]], <1 x double> [[TMP3]], <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: [[TMP17:%.*]] = shufflevector <1 x double> [[TMP5]], <1 x double> [[TMP7]], <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: [[TMP18:%.*]] = shufflevector <1 x double> [[TMP9]], <1 x double> [[TMP11]], <2 x i32> <i32 0, i32 1>
@@ -79,7 +79,7 @@ define <12 x double> @transpose_double_3x4(<12 x double> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <12 x double> [[A]], <12 x double> poison, <3 x i32> <i32 6, i32 7, i32 8>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <12 x double> [[A]], <12 x double> poison, <3 x i32> <i32 9, i32 10, i32 11>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <3 x double> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> undef, double [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x double> poison, double [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x double> [[TMP1]], double [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 0
@@ -87,7 +87,7 @@ define <12 x double> @transpose_double_3x4(<12 x double> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <3 x double> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x double> [[TMP5]], double [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <3 x double> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> undef, double [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x double> poison, double [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x double> [[TMP9]], double [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 1
@@ -95,7 +95,7 @@ define <12 x double> @transpose_double_3x4(<12 x double> %a) {
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <3 x double> [[SPLIT3]], i64 1
; CHECK-NEXT: [[TMP15:%.*]] = insertelement <4 x double> [[TMP13]], double [[TMP14]], i64 3
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <3 x double> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x double> undef, double [[TMP16]], i64 0
+; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x double> poison, double [[TMP16]], i64 0
; CHECK-NEXT: [[TMP18:%.*]] = extractelement <3 x double> [[SPLIT1]], i64 2
; CHECK-NEXT: [[TMP19:%.*]] = insertelement <4 x double> [[TMP17]], double [[TMP18]], i64 1
; CHECK-NEXT: [[TMP20:%.*]] = extractelement <3 x double> [[SPLIT2]], i64 2
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float-row-major.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float-row-major.ll
index cc9994697a79..ee1062072ee8 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float-row-major.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float-row-major.ll
@@ -7,19 +7,19 @@ define <8 x float> @transpose(<8 x float> %a) {
; RM-NEXT: [[SPLIT:%.*]] = shufflevector <8 x float> [[A:%.*]], <8 x float> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
; RM-NEXT: [[SPLIT1:%.*]] = shufflevector <8 x float> [[A]], <8 x float> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; RM-NEXT: [[TMP0:%.*]] = extractelement <4 x float> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <2 x float> undef, float [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <2 x float> poison, float [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <4 x float> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <2 x float> [[TMP1]], float [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <4 x float> [[SPLIT]], i64 1
-; RM-NEXT: [[TMP5:%.*]] = insertelement <2 x float> undef, float [[TMP4]], i64 0
+; RM-NEXT: [[TMP5:%.*]] = insertelement <2 x float> poison, float [[TMP4]], i64 0
; RM-NEXT: [[TMP6:%.*]] = extractelement <4 x float> [[SPLIT1]], i64 1
; RM-NEXT: [[TMP7:%.*]] = insertelement <2 x float> [[TMP5]], float [[TMP6]], i64 1
; RM-NEXT: [[TMP8:%.*]] = extractelement <4 x float> [[SPLIT]], i64 2
-; RM-NEXT: [[TMP9:%.*]] = insertelement <2 x float> undef, float [[TMP8]], i64 0
+; RM-NEXT: [[TMP9:%.*]] = insertelement <2 x float> poison, float [[TMP8]], i64 0
; RM-NEXT: [[TMP10:%.*]] = extractelement <4 x float> [[SPLIT1]], i64 2
; RM-NEXT: [[TMP11:%.*]] = insertelement <2 x float> [[TMP9]], float [[TMP10]], i64 1
; RM-NEXT: [[TMP12:%.*]] = extractelement <4 x float> [[SPLIT]], i64 3
-; RM-NEXT: [[TMP13:%.*]] = insertelement <2 x float> undef, float [[TMP12]], i64 0
+; RM-NEXT: [[TMP13:%.*]] = insertelement <2 x float> poison, float [[TMP12]], i64 0
; RM-NEXT: [[TMP14:%.*]] = extractelement <4 x float> [[SPLIT1]], i64 3
; RM-NEXT: [[TMP15:%.*]] = insertelement <2 x float> [[TMP13]], float [[TMP14]], i64 1
; RM-NEXT: [[TMP16:%.*]] = shufflevector <2 x float> [[TMP3]], <2 x float> [[TMP7]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
@@ -46,7 +46,7 @@ define <8 x float> @transpose_single_column(<8 x float> %a) {
; RM-NEXT: [[SPLIT6:%.*]] = shufflevector <8 x float> [[A]], <8 x float> poison, <1 x i32> <i32 6>
; RM-NEXT: [[SPLIT7:%.*]] = shufflevector <8 x float> [[A]], <8 x float> poison, <1 x i32> <i32 7>
; RM-NEXT: [[TMP0:%.*]] = extractelement <1 x float> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <8 x float> undef, float [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <8 x float> poison, float [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <1 x float> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <8 x float> [[TMP1]], float [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <1 x float> [[SPLIT2]], i64 0
@@ -77,25 +77,25 @@ define <12 x float> @transpose_float_3x4(<12 x float> %a) {
; RM-NEXT: [[SPLIT1:%.*]] = shufflevector <12 x float> [[A]], <12 x float> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; RM-NEXT: [[SPLIT2:%.*]] = shufflevector <12 x float> [[A]], <12 x float> poison, <4 x i32> <i32 8, i32 9, i32 10, i32 11>
; RM-NEXT: [[TMP0:%.*]] = extractelement <4 x float> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <3 x float> undef, float [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <3 x float> poison, float [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <4 x float> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <3 x float> [[TMP1]], float [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <4 x float> [[SPLIT2]], i64 0
; RM-NEXT: [[TMP5:%.*]] = insertelement <3 x float> [[TMP3]], float [[TMP4]], i64 2
; RM-NEXT: [[TMP6:%.*]] = extractelement <4 x float> [[SPLIT]], i64 1
-; RM-NEXT: [[TMP7:%.*]] = insertelement <3 x float> undef, float [[TMP6]], i64 0
+; RM-NEXT: [[TMP7:%.*]] = insertelement <3 x float> poison, float [[TMP6]], i64 0
; RM-NEXT: [[TMP8:%.*]] = extractelement <4 x float> [[SPLIT1]], i64 1
; RM-NEXT: [[TMP9:%.*]] = insertelement <3 x float> [[TMP7]], float [[TMP8]], i64 1
; RM-NEXT: [[TMP10:%.*]] = extractelement <4 x float> [[SPLIT2]], i64 1
; RM-NEXT: [[TMP11:%.*]] = insertelement <3 x float> [[TMP9]], float [[TMP10]], i64 2
; RM-NEXT: [[TMP12:%.*]] = extractelement <4 x float> [[SPLIT]], i64 2
-; RM-NEXT: [[TMP13:%.*]] = insertelement <3 x float> undef, float [[TMP12]], i64 0
+; RM-NEXT: [[TMP13:%.*]] = insertelement <3 x float> poison, float [[TMP12]], i64 0
; RM-NEXT: [[TMP14:%.*]] = extractelement <4 x float> [[SPLIT1]], i64 2
; RM-NEXT: [[TMP15:%.*]] = insertelement <3 x float> [[TMP13]], float [[TMP14]], i64 1
; RM-NEXT: [[TMP16:%.*]] = extractelement <4 x float> [[SPLIT2]], i64 2
; RM-NEXT: [[TMP17:%.*]] = insertelement <3 x float> [[TMP15]], float [[TMP16]], i64 2
; RM-NEXT: [[TMP18:%.*]] = extractelement <4 x float> [[SPLIT]], i64 3
-; RM-NEXT: [[TMP19:%.*]] = insertelement <3 x float> undef, float [[TMP18]], i64 0
+; RM-NEXT: [[TMP19:%.*]] = insertelement <3 x float> poison, float [[TMP18]], i64 0
; RM-NEXT: [[TMP20:%.*]] = extractelement <4 x float> [[SPLIT1]], i64 3
; RM-NEXT: [[TMP21:%.*]] = insertelement <3 x float> [[TMP19]], float [[TMP20]], i64 1
; RM-NEXT: [[TMP22:%.*]] = extractelement <4 x float> [[SPLIT2]], i64 3
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float.ll
index 8b73dcd6bc64..d2fa4378cbb2 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-float.ll
@@ -10,7 +10,7 @@ define <8 x float> @transpose(<8 x float> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <8 x float> [[A]], <8 x float> poison, <2 x i32> <i32 4, i32 5>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <8 x float> [[A]], <8 x float> poison, <2 x i32> <i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <2 x float> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x float> undef, float [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x float> poison, float [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x float> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x float> [[TMP1]], float [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x float> [[SPLIT2]], i64 0
@@ -18,7 +18,7 @@ define <8 x float> @transpose(<8 x float> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x float> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x float> [[TMP5]], float [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x float> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x float> undef, float [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x float> poison, float [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x float> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x float> [[TMP9]], float [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x float> [[SPLIT2]], i64 1
@@ -40,21 +40,21 @@ define <8 x float> @transpose_single_column(<8 x float> %a) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SPLIT:%.*]] = shufflevector <8 x float> [[A:%.*]], <8 x float> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <8 x float> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <1 x float> undef, float [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <1 x float> poison, float [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <8 x float> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP3:%.*]] = insertelement <1 x float> undef, float [[TMP2]], i64 0
+; CHECK-NEXT: [[TMP3:%.*]] = insertelement <1 x float> poison, float [[TMP2]], i64 0
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <8 x float> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP5:%.*]] = insertelement <1 x float> undef, float [[TMP4]], i64 0
+; CHECK-NEXT: [[TMP5:%.*]] = insertelement <1 x float> poison, float [[TMP4]], i64 0
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <8 x float> [[SPLIT]], i64 3
-; CHECK-NEXT: [[TMP7:%.*]] = insertelement <1 x float> undef, float [[TMP6]], i64 0
+; CHECK-NEXT: [[TMP7:%.*]] = insertelement <1 x float> poison, float [[TMP6]], i64 0
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <8 x float> [[SPLIT]], i64 4
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <1 x float> undef, float [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <1 x float> poison, float [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <8 x float> [[SPLIT]], i64 5
-; CHECK-NEXT: [[TMP11:%.*]] = insertelement <1 x float> undef, float [[TMP10]], i64 0
+; CHECK-NEXT: [[TMP11:%.*]] = insertelement <1 x float> poison, float [[TMP10]], i64 0
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <8 x float> [[SPLIT]], i64 6
-; CHECK-NEXT: [[TMP13:%.*]] = insertelement <1 x float> undef, float [[TMP12]], i64 0
+; CHECK-NEXT: [[TMP13:%.*]] = insertelement <1 x float> poison, float [[TMP12]], i64 0
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <8 x float> [[SPLIT]], i64 7
-; CHECK-NEXT: [[TMP15:%.*]] = insertelement <1 x float> undef, float [[TMP14]], i64 0
+; CHECK-NEXT: [[TMP15:%.*]] = insertelement <1 x float> poison, float [[TMP14]], i64 0
; CHECK-NEXT: [[TMP16:%.*]] = shufflevector <1 x float> [[TMP1]], <1 x float> [[TMP3]], <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: [[TMP17:%.*]] = shufflevector <1 x float> [[TMP5]], <1 x float> [[TMP7]], <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: [[TMP18:%.*]] = shufflevector <1 x float> [[TMP9]], <1 x float> [[TMP11]], <2 x i32> <i32 0, i32 1>
@@ -79,7 +79,7 @@ define <12 x float> @transpose_float_3x4(<12 x float> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <12 x float> [[A]], <12 x float> poison, <3 x i32> <i32 6, i32 7, i32 8>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <12 x float> [[A]], <12 x float> poison, <3 x i32> <i32 9, i32 10, i32 11>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <3 x float> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x float> undef, float [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x float> poison, float [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <3 x float> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x float> [[TMP1]], float [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <3 x float> [[SPLIT2]], i64 0
@@ -87,7 +87,7 @@ define <12 x float> @transpose_float_3x4(<12 x float> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <3 x float> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x float> [[TMP5]], float [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <3 x float> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x float> undef, float [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x float> poison, float [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <3 x float> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x float> [[TMP9]], float [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <3 x float> [[SPLIT2]], i64 1
@@ -95,7 +95,7 @@ define <12 x float> @transpose_float_3x4(<12 x float> %a) {
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <3 x float> [[SPLIT3]], i64 1
; CHECK-NEXT: [[TMP15:%.*]] = insertelement <4 x float> [[TMP13]], float [[TMP14]], i64 3
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <3 x float> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x float> undef, float [[TMP16]], i64 0
+; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x float> poison, float [[TMP16]], i64 0
; CHECK-NEXT: [[TMP18:%.*]] = extractelement <3 x float> [[SPLIT1]], i64 2
; CHECK-NEXT: [[TMP19:%.*]] = insertelement <4 x float> [[TMP17]], float [[TMP18]], i64 1
; CHECK-NEXT: [[TMP20:%.*]] = extractelement <3 x float> [[SPLIT2]], i64 2
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32-row-major.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32-row-major.ll
index ba59a0192c21..b43741e8a725 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32-row-major.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32-row-major.ll
@@ -7,19 +7,19 @@ define <8 x i32> @transpose(<8 x i32> %a) {
; RM-NEXT: [[SPLIT:%.*]] = shufflevector <8 x i32> [[A:%.*]], <8 x i32> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
; RM-NEXT: [[SPLIT1:%.*]] = shufflevector <8 x i32> [[A]], <8 x i32> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; RM-NEXT: [[TMP0:%.*]] = extractelement <4 x i32> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <2 x i32> undef, i32 [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <2 x i32> poison, i32 [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <4 x i32> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <4 x i32> [[SPLIT]], i64 1
-; RM-NEXT: [[TMP5:%.*]] = insertelement <2 x i32> undef, i32 [[TMP4]], i64 0
+; RM-NEXT: [[TMP5:%.*]] = insertelement <2 x i32> poison, i32 [[TMP4]], i64 0
; RM-NEXT: [[TMP6:%.*]] = extractelement <4 x i32> [[SPLIT1]], i64 1
; RM-NEXT: [[TMP7:%.*]] = insertelement <2 x i32> [[TMP5]], i32 [[TMP6]], i64 1
; RM-NEXT: [[TMP8:%.*]] = extractelement <4 x i32> [[SPLIT]], i64 2
-; RM-NEXT: [[TMP9:%.*]] = insertelement <2 x i32> undef, i32 [[TMP8]], i64 0
+; RM-NEXT: [[TMP9:%.*]] = insertelement <2 x i32> poison, i32 [[TMP8]], i64 0
; RM-NEXT: [[TMP10:%.*]] = extractelement <4 x i32> [[SPLIT1]], i64 2
; RM-NEXT: [[TMP11:%.*]] = insertelement <2 x i32> [[TMP9]], i32 [[TMP10]], i64 1
; RM-NEXT: [[TMP12:%.*]] = extractelement <4 x i32> [[SPLIT]], i64 3
-; RM-NEXT: [[TMP13:%.*]] = insertelement <2 x i32> undef, i32 [[TMP12]], i64 0
+; RM-NEXT: [[TMP13:%.*]] = insertelement <2 x i32> poison, i32 [[TMP12]], i64 0
; RM-NEXT: [[TMP14:%.*]] = extractelement <4 x i32> [[SPLIT1]], i64 3
; RM-NEXT: [[TMP15:%.*]] = insertelement <2 x i32> [[TMP13]], i32 [[TMP14]], i64 1
; RM-NEXT: [[TMP16:%.*]] = shufflevector <2 x i32> [[TMP3]], <2 x i32> [[TMP7]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
@@ -46,7 +46,7 @@ define <8 x i32> @transpose_single_column(<8 x i32> %a) {
; RM-NEXT: [[SPLIT6:%.*]] = shufflevector <8 x i32> [[A]], <8 x i32> poison, <1 x i32> <i32 6>
; RM-NEXT: [[SPLIT7:%.*]] = shufflevector <8 x i32> [[A]], <8 x i32> poison, <1 x i32> <i32 7>
; RM-NEXT: [[TMP0:%.*]] = extractelement <1 x i32> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <8 x i32> undef, i32 [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <8 x i32> poison, i32 [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <1 x i32> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <8 x i32> [[TMP1]], i32 [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <1 x i32> [[SPLIT2]], i64 0
@@ -77,25 +77,25 @@ define <12 x i32> @transpose_i32_3x4(<12 x i32> %a) {
; RM-NEXT: [[SPLIT1:%.*]] = shufflevector <12 x i32> [[A]], <12 x i32> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; RM-NEXT: [[SPLIT2:%.*]] = shufflevector <12 x i32> [[A]], <12 x i32> poison, <4 x i32> <i32 8, i32 9, i32 10, i32 11>
; RM-NEXT: [[TMP0:%.*]] = extractelement <4 x i32> [[SPLIT]], i64 0
-; RM-NEXT: [[TMP1:%.*]] = insertelement <3 x i32> undef, i32 [[TMP0]], i64 0
+; RM-NEXT: [[TMP1:%.*]] = insertelement <3 x i32> poison, i32 [[TMP0]], i64 0
; RM-NEXT: [[TMP2:%.*]] = extractelement <4 x i32> [[SPLIT1]], i64 0
; RM-NEXT: [[TMP3:%.*]] = insertelement <3 x i32> [[TMP1]], i32 [[TMP2]], i64 1
; RM-NEXT: [[TMP4:%.*]] = extractelement <4 x i32> [[SPLIT2]], i64 0
; RM-NEXT: [[TMP5:%.*]] = insertelement <3 x i32> [[TMP3]], i32 [[TMP4]], i64 2
; RM-NEXT: [[TMP6:%.*]] = extractelement <4 x i32> [[SPLIT]], i64 1
-; RM-NEXT: [[TMP7:%.*]] = insertelement <3 x i32> undef, i32 [[TMP6]], i64 0
+; RM-NEXT: [[TMP7:%.*]] = insertelement <3 x i32> poison, i32 [[TMP6]], i64 0
; RM-NEXT: [[TMP8:%.*]] = extractelement <4 x i32> [[SPLIT1]], i64 1
; RM-NEXT: [[TMP9:%.*]] = insertelement <3 x i32> [[TMP7]], i32 [[TMP8]], i64 1
; RM-NEXT: [[TMP10:%.*]] = extractelement <4 x i32> [[SPLIT2]], i64 1
; RM-NEXT: [[TMP11:%.*]] = insertelement <3 x i32> [[TMP9]], i32 [[TMP10]], i64 2
; RM-NEXT: [[TMP12:%.*]] = extractelement <4 x i32> [[SPLIT]], i64 2
-; RM-NEXT: [[TMP13:%.*]] = insertelement <3 x i32> undef, i32 [[TMP12]], i64 0
+; RM-NEXT: [[TMP13:%.*]] = insertelement <3 x i32> poison, i32 [[TMP12]], i64 0
; RM-NEXT: [[TMP14:%.*]] = extractelement <4 x i32> [[SPLIT1]], i64 2
; RM-NEXT: [[TMP15:%.*]] = insertelement <3 x i32> [[TMP13]], i32 [[TMP14]], i64 1
; RM-NEXT: [[TMP16:%.*]] = extractelement <4 x i32> [[SPLIT2]], i64 2
; RM-NEXT: [[TMP17:%.*]] = insertelement <3 x i32> [[TMP15]], i32 [[TMP16]], i64 2
; RM-NEXT: [[TMP18:%.*]] = extractelement <4 x i32> [[SPLIT]], i64 3
-; RM-NEXT: [[TMP19:%.*]] = insertelement <3 x i32> undef, i32 [[TMP18]], i64 0
+; RM-NEXT: [[TMP19:%.*]] = insertelement <3 x i32> poison, i32 [[TMP18]], i64 0
; RM-NEXT: [[TMP20:%.*]] = extractelement <4 x i32> [[SPLIT1]], i64 3
; RM-NEXT: [[TMP21:%.*]] = insertelement <3 x i32> [[TMP19]], i32 [[TMP20]], i64 1
; RM-NEXT: [[TMP22:%.*]] = extractelement <4 x i32> [[SPLIT2]], i64 3
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32.ll
index 5595278e3ae6..5e2dec6ce312 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-i32.ll
@@ -10,7 +10,7 @@ define <8 x i32> @transpose(<8 x i32> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <8 x i32> [[A]], <8 x i32> poison, <2 x i32> <i32 4, i32 5>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <8 x i32> [[A]], <8 x i32> poison, <2 x i32> <i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <2 x i32> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x i32> undef, i32 [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x i32> poison, i32 [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x i32> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x i32> [[TMP1]], i32 [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x i32> [[SPLIT2]], i64 0
@@ -18,7 +18,7 @@ define <8 x i32> @transpose(<8 x i32> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i32> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x i32> [[TMP5]], i32 [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x i32> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x i32> undef, i32 [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x i32> poison, i32 [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x i32> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x i32> [[TMP9]], i32 [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x i32> [[SPLIT2]], i64 1
@@ -40,21 +40,21 @@ define <8 x i32> @transpose_single_column(<8 x i32> %a) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SPLIT:%.*]] = shufflevector <8 x i32> [[A:%.*]], <8 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <8 x i32> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <1 x i32> undef, i32 [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <1 x i32> poison, i32 [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <8 x i32> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP3:%.*]] = insertelement <1 x i32> undef, i32 [[TMP2]], i64 0
+; CHECK-NEXT: [[TMP3:%.*]] = insertelement <1 x i32> poison, i32 [[TMP2]], i64 0
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <8 x i32> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP5:%.*]] = insertelement <1 x i32> undef, i32 [[TMP4]], i64 0
+; CHECK-NEXT: [[TMP5:%.*]] = insertelement <1 x i32> poison, i32 [[TMP4]], i64 0
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <8 x i32> [[SPLIT]], i64 3
-; CHECK-NEXT: [[TMP7:%.*]] = insertelement <1 x i32> undef, i32 [[TMP6]], i64 0
+; CHECK-NEXT: [[TMP7:%.*]] = insertelement <1 x i32> poison, i32 [[TMP6]], i64 0
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <8 x i32> [[SPLIT]], i64 4
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <1 x i32> undef, i32 [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <1 x i32> poison, i32 [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <8 x i32> [[SPLIT]], i64 5
-; CHECK-NEXT: [[TMP11:%.*]] = insertelement <1 x i32> undef, i32 [[TMP10]], i64 0
+; CHECK-NEXT: [[TMP11:%.*]] = insertelement <1 x i32> poison, i32 [[TMP10]], i64 0
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <8 x i32> [[SPLIT]], i64 6
-; CHECK-NEXT: [[TMP13:%.*]] = insertelement <1 x i32> undef, i32 [[TMP12]], i64 0
+; CHECK-NEXT: [[TMP13:%.*]] = insertelement <1 x i32> poison, i32 [[TMP12]], i64 0
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <8 x i32> [[SPLIT]], i64 7
-; CHECK-NEXT: [[TMP15:%.*]] = insertelement <1 x i32> undef, i32 [[TMP14]], i64 0
+; CHECK-NEXT: [[TMP15:%.*]] = insertelement <1 x i32> poison, i32 [[TMP14]], i64 0
; CHECK-NEXT: [[TMP16:%.*]] = shufflevector <1 x i32> [[TMP1]], <1 x i32> [[TMP3]], <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: [[TMP17:%.*]] = shufflevector <1 x i32> [[TMP5]], <1 x i32> [[TMP7]], <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: [[TMP18:%.*]] = shufflevector <1 x i32> [[TMP9]], <1 x i32> [[TMP11]], <2 x i32> <i32 0, i32 1>
@@ -79,7 +79,7 @@ define <12 x i32> @transpose_i32_3x4(<12 x i32> %a) {
; CHECK-NEXT: [[SPLIT2:%.*]] = shufflevector <12 x i32> [[A]], <12 x i32> poison, <3 x i32> <i32 6, i32 7, i32 8>
; CHECK-NEXT: [[SPLIT3:%.*]] = shufflevector <12 x i32> [[A]], <12 x i32> poison, <3 x i32> <i32 9, i32 10, i32 11>
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <3 x i32> [[SPLIT]], i64 0
-; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x i32> undef, i32 [[TMP0]], i64 0
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <4 x i32> poison, i32 [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <3 x i32> [[SPLIT1]], i64 0
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <4 x i32> [[TMP1]], i32 [[TMP2]], i64 1
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <3 x i32> [[SPLIT2]], i64 0
@@ -87,7 +87,7 @@ define <12 x i32> @transpose_i32_3x4(<12 x i32> %a) {
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <3 x i32> [[SPLIT3]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x i32> [[TMP5]], i32 [[TMP6]], i64 3
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <3 x i32> [[SPLIT]], i64 1
-; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x i32> undef, i32 [[TMP8]], i64 0
+; CHECK-NEXT: [[TMP9:%.*]] = insertelement <4 x i32> poison, i32 [[TMP8]], i64 0
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <3 x i32> [[SPLIT1]], i64 1
; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x i32> [[TMP9]], i32 [[TMP10]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <3 x i32> [[SPLIT2]], i64 1
@@ -95,7 +95,7 @@ define <12 x i32> @transpose_i32_3x4(<12 x i32> %a) {
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <3 x i32> [[SPLIT3]], i64 1
; CHECK-NEXT: [[TMP15:%.*]] = insertelement <4 x i32> [[TMP13]], i32 [[TMP14]], i64 3
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <3 x i32> [[SPLIT]], i64 2
-; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x i32> undef, i32 [[TMP16]], i64 0
+; CHECK-NEXT: [[TMP17:%.*]] = insertelement <4 x i32> poison, i32 [[TMP16]], i64 0
; CHECK-NEXT: [[TMP18:%.*]] = extractelement <3 x i32> [[SPLIT1]], i64 2
; CHECK-NEXT: [[TMP19:%.*]] = insertelement <4 x i32> [[TMP17]], i32 [[TMP18]], i64 1
; CHECK-NEXT: [[TMP20:%.*]] = extractelement <3 x i32> [[SPLIT2]], i64 2
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts-iterator-invalidation.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts-iterator-invalidation.ll
index 5c947ccaca8b..900e8c8308f1 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts-iterator-invalidation.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts-iterator-invalidation.ll
@@ -36,9 +36,9 @@ define <2 x double> @test(<4 x double> %a, <2 x double> %b, i1 %c) {
; CHECK-NEXT: [[TMP12:%.*]] = shufflevector <1 x double> [[TMP11]], <1 x double> poison, <2 x i32> <i32 0, i32 undef>
; CHECK-NEXT: [[TMP13:%.*]] = shufflevector <2 x double> [[TMP6]], <2 x double> [[TMP12]], <2 x i32> <i32 0, i32 2>
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <2 x double> [[TMP13]], i64 0
-; CHECK-NEXT: [[TMP15:%.*]] = insertelement <1 x double> undef, double [[TMP14]], i64 0
+; CHECK-NEXT: [[TMP15:%.*]] = insertelement <1 x double> poison, double [[TMP14]], i64 0
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <2 x double> [[TMP13]], i64 1
-; CHECK-NEXT: [[TMP17:%.*]] = insertelement <1 x double> undef, double [[TMP16]], i64 0
+; CHECK-NEXT: [[TMP17:%.*]] = insertelement <1 x double> poison, double [[TMP16]], i64 0
; CHECK-NEXT: [[TMP18:%.*]] = shufflevector <1 x double> [[TMP15]], <1 x double> [[TMP17]], <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: ret <2 x double> [[TMP18]]
; CHECK: exit.2:
diff --git a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts.ll b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts.ll
index 8ba112db5e22..4933a021a46d 100644
--- a/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts.ll
+++ b/llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts.ll
@@ -968,11 +968,11 @@ define <4 x float> @mult_tt_same_op(<4 x float> %a) {
; CHECK-NEXT: [[TMP12:%.*]] = shufflevector <2 x float> [[TMP11]], <2 x float> poison, <2 x i32> <i32 0, i32 1>
; CHECK-NEXT: [[TMP13:%.*]] = shufflevector <2 x float> undef, <2 x float> [[TMP12]], <2 x i32> <i32 2, i32 3>
; CHECK-NEXT: [[TMP14:%.*]] = extractelement <2 x float> [[TMP6]], i64 0
-; CHECK-NEXT: [[TMP15:%.*]] = insertelement <2 x float> undef, float [[TMP14]], i64 0
+; CHECK-NEXT: [[TMP15:%.*]] = insertelement <2 x float> poison, float [[TMP14]], i64 0
; CHECK-NEXT: [[TMP16:%.*]] = extractelement <2 x float> [[TMP13]], i64 0
; CHECK-NEXT: [[TMP17:%.*]] = insertelement <2 x float> [[TMP15]], float [[TMP16]], i64 1
; CHECK-NEXT: [[TMP18:%.*]] = extractelement <2 x float> [[TMP6]], i64 1
-; CHECK-NEXT: [[TMP19:%.*]] = insertelement <2 x float> undef, float [[TMP18]], i64 0
+; CHECK-NEXT: [[TMP19:%.*]] = insertelement <2 x float> poison, float [[TMP18]], i64 0
; CHECK-NEXT: [[TMP20:%.*]] = extractelement <2 x float> [[TMP13]], i64 1
; CHECK-NEXT: [[TMP21:%.*]] = insertelement <2 x float> [[TMP19]], float [[TMP20]], i64 1
; CHECK-NEXT: [[TMP22:%.*]] = shufflevector <2 x float> [[TMP17]], <2 x float> [[TMP21]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
@@ -1096,25 +1096,25 @@ define <12 x double> @factor_transpose(<6 x double> %a, <8 x double> %b) {
; CHECK-NEXT: [[TMP41:%.*]] = shufflevector <2 x double> [[TMP40]], <2 x double> poison, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
; CHECK-NEXT: [[TMP42:%.*]] = shufflevector <4 x double> [[TMP35]], <4 x double> [[TMP41]], <4 x i32> <i32 0, i32 1, i32 4, i32 5>
; CHECK-NEXT: [[TMP43:%.*]] = extractelement <4 x double> [[TMP14]], i64 0
-; CHECK-NEXT: [[TMP44:%.*]] = insertelement <3 x double> undef, double [[TMP43]], i64 0
+; CHECK-NEXT: [[TMP44:%.*]] = insertelement <3 x double> poison, double [[TMP43]], i64 0
; CHECK-NEXT: [[TMP45:%.*]] = extractelement <4 x double> [[TMP28]], i64 0
; CHECK-NEXT: [[TMP46:%.*]] = insertelement <3 x double> [[TMP44]], double [[TMP45]], i64 1
; CHECK-NEXT: [[TMP47:%.*]] = extractelement <4 x double> [[TMP42]], i64 0
; CHECK-NEXT: [[TMP48:%.*]] = insertelement <3 x double> [[TMP46]], double [[TMP47]], i64 2
; CHECK-NEXT: [[TMP49:%.*]] = extractelement <4 x double> [[TMP14]], i64 1
-; CHECK-NEXT: [[TMP50:%.*]] = insertelement <3 x double> undef, double [[TMP49]], i64 0
+; CHECK-NEXT: [[TMP50:%.*]] = insertelement <3 x double> poison, double [[TMP49]], i64 0
; CHECK-NEXT: [[TMP51:%.*]] = extractelement <4 x double> [[TMP28]], i64 1
; CHECK-NEXT: [[TMP52:%.*]] = insertelement <3 x double> [[TMP50]], double [[TMP51]], i64 1
; CHECK-NEXT: [[TMP53:%.*]] = extractelement <4 x double> [[TMP42]], i64 1
; CHECK-NEXT: [[TMP54:%.*]] = insertelement <3 x double> [[TMP52]], double [[TMP53]], i64 2
; CHECK-NEXT: [[TMP55:%.*]] = extractelement <4 x double> [[TMP14]], i64 2
-; CHECK-NEXT: [[TMP56:%.*]] = insertelement <3 x double> undef, double [[TMP55]], i64 0
+; CHECK-NEXT: [[TMP56:%.*]] = insertelement <3 x double> poison, double [[TMP55]], i64 0
; CHECK-NEXT: [[TMP57:%.*]] = extractelement <4 x double> [[TMP28]], i64 2
; CHECK-NEXT: [[TMP58:%.*]] = insertelement <3 x double> [[TMP56]], double [[TMP57]], i64 1
; CHECK-NEXT: [[TMP59:%.*]] = extractelement <4 x double> [[TMP42]], i64 2
; CHECK-NEXT: [[TMP60:%.*]] = insertelement <3 x double> [[TMP58]], double [[TMP59]], i64 2
; CHECK-NEXT: [[TMP61:%.*]] = extractelement <4 x double> [[TMP14]], i64 3
-; CHECK-NEXT: [[TMP62:%.*]] = insertelement <3 x double> undef, double [[TMP61]], i64 0
+; CHECK-NEXT: [[TMP62:%.*]] = insertelement <3 x double> poison, double [[TMP61]], i64 0
; CHECK-NEXT: [[TMP63:%.*]] = extractelement <4 x double> [[TMP28]], i64 3
; CHECK-NEXT: [[TMP64:%.*]] = insertelement <3 x double> [[TMP62]], double [[TMP63]], i64 1
; CHECK-NEXT: [[TMP65:%.*]] = extractelement <4 x double> [[TMP42]], i64 3
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