[llvm] c9a87a5 - [SLPVectorizer] Use accurate cost for external users of resize shuffles (#137419)

via llvm-commits llvm-commits at lists.llvm.org
Tue Jun 17 08:14:09 PDT 2025


Author: Jeffrey Byrnes
Date: 2025-06-17T08:14:05-07:00
New Revision: c9a87a50aee3c91f36d33c170d5131bcc370c289

URL: https://github.com/llvm/llvm-project/commit/c9a87a50aee3c91f36d33c170d5131bcc370c289
DIFF: https://github.com/llvm/llvm-project/commit/c9a87a50aee3c91f36d33c170d5131bcc370c289.diff

LOG: [SLPVectorizer] Use accurate cost for external users of resize shuffles (#137419)

When implementing the vectorization, we potentially need to add shuffles
for external users. In such cases, we may be shuffling a smaller vector
into a larger vector. When this happens `ResizeToVF` will just build a
poison padded identity vector. Then the to build the final shuffle, we
just use the `SK_InsertSubvector` mask.

This is possibly clearer by looking at the included test in
SLPVectorizer/AMDGPU/external-shuffle.ll

In the exit block we have a bunch of shuffles to glue the vectorized
tree match the `InsertElement` users. `TMP25` holds the result of
resizing the v2i16 vectorized sequence to match the `InsertElement` size
v16i16. Then `TMP26` is the final shuffle which replaces the
`InsertElement` sequence. This is just an insertsubvector.

However, when calculating the cost for these shuffles, we aren't
modelling this correctly. `ResizeToVF` will indicate to
`performExtractsShuffleAction` that we cannot use the original mask due
to the resize shuffle. The consequence is that the cost calculation uses
a different shuffle mask than what is ultimately used.

Going back to the included test, we can consider again `TMP26`. Clearly
we can see the shuffle uses a mask {0, 1, 2, 3, 16, 17, poison ..}.
However, we will currently calculate the cost with a mask {0, 1, 2, 3,
20, 21, ...} we have replaced 16 and 17 with 20 and 21 (Index + Vector
Size). Queries like BasicTTImpl::improveShuffleKindFromMask will not
recognize this as an `SK_InsertSubvector` mask, and targets which have
reduced costs for `SK_InsertSubvector` will not accurately calculate the
cost.

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    llvm/test/Transforms/SLPVectorizer/AMDGPU/external-shuffle.ll
    llvm/test/Transforms/SLPVectorizer/X86/extractelement-single-use-many-nodes.ll
    llvm/test/Transforms/SLPVectorizer/X86/vec_list_bias-inseltpoison.ll

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
index d0bf637b70aba..d811e9d77d183 100644
--- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -14910,25 +14910,47 @@ InstructionCost BoUpSLP::getTreeCost(ArrayRef<Value *> VectorizedVals,
 
   Cost += ExtractCost;
   auto &&ResizeToVF = [this, &Cost](const TreeEntry *TE, ArrayRef<int> Mask,
-                                    bool) {
+                                    bool ForSingleMask) {
     InstructionCost C = 0;
     unsigned VF = Mask.size();
     unsigned VecVF = TE->getVectorFactor();
-    if (VF != VecVF &&
-        (any_of(Mask, [VF](int Idx) { return Idx >= static_cast<int>(VF); }) ||
-         !ShuffleVectorInst::isIdentityMask(Mask, VF))) {
-      SmallVector<int> OrigMask(VecVF, PoisonMaskElem);
-      std::copy(Mask.begin(), std::next(Mask.begin(), std::min(VF, VecVF)),
-                OrigMask.begin());
-      C = ::getShuffleCost(*TTI, TTI::SK_PermuteSingleSrc,
-                           getWidenedType(TE->getMainOp()->getType(), VecVF),
-                           OrigMask);
-      LLVM_DEBUG(
-          dbgs() << "SLP: Adding cost " << C
-                 << " for final shuffle of insertelement external users.\n";
-          TE->dump(); dbgs() << "SLP: Current total cost = " << Cost << "\n");
-      Cost += C;
-      return std::make_pair(TE, true);
+    bool HasLargeIndex =
+        any_of(Mask, [VF](int Idx) { return Idx >= static_cast<int>(VF); });
+    if ((VF != VecVF && HasLargeIndex) ||
+        !ShuffleVectorInst::isIdentityMask(Mask, VF)) {
+
+      if (HasLargeIndex) {
+        SmallVector<int> OrigMask(VecVF, PoisonMaskElem);
+        std::copy(Mask.begin(), std::next(Mask.begin(), std::min(VF, VecVF)),
+                  OrigMask.begin());
+        C = ::getShuffleCost(*TTI, TTI::SK_PermuteSingleSrc,
+                             getWidenedType(TE->getMainOp()->getType(), VecVF),
+                             OrigMask);
+        LLVM_DEBUG(
+            dbgs() << "SLP: Adding cost " << C
+                   << " for final shuffle of insertelement external users.\n";
+            TE->dump(); dbgs() << "SLP: Current total cost = " << Cost << "\n");
+        Cost += C;
+        return std::make_pair(TE, true);
+      }
+
+      if (!ForSingleMask) {
+        SmallVector<int> ResizeMask(VF, PoisonMaskElem);
+        for (unsigned I = 0; I < VF; ++I) {
+          if (Mask[I] != PoisonMaskElem)
+            ResizeMask[Mask[I]] = Mask[I];
+        }
+        if (!ShuffleVectorInst::isIdentityMask(ResizeMask, VF))
+          C = ::getShuffleCost(
+              *TTI, TTI::SK_PermuteSingleSrc,
+              getWidenedType(TE->getMainOp()->getType(), VecVF), ResizeMask);
+        LLVM_DEBUG(
+            dbgs() << "SLP: Adding cost " << C
+                   << " for final shuffle of insertelement external users.\n";
+            TE->dump(); dbgs() << "SLP: Current total cost = " << Cost << "\n");
+
+        Cost += C;
+      }
     }
     return std::make_pair(TE, false);
   };

diff  --git a/llvm/test/Transforms/SLPVectorizer/AMDGPU/external-shuffle.ll b/llvm/test/Transforms/SLPVectorizer/AMDGPU/external-shuffle.ll
index ce9e47a03dee3..f3e89b60b8045 100644
--- a/llvm/test/Transforms/SLPVectorizer/AMDGPU/external-shuffle.ll
+++ b/llvm/test/Transforms/SLPVectorizer/AMDGPU/external-shuffle.ll
@@ -10,124 +10,84 @@ define void @phi_4(ptr addrspace(3) %inptr0, ptr addrspace(3) %inptr1, ptr %out,
 ; GCN-NEXT:  [[ENTRY:.*]]:
 ; GCN-NEXT:    [[TMP0:%.*]] = load <2 x i16>, ptr addrspace(3) [[INPTR0]], align 8
 ; GCN-NEXT:    [[GEP2:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 2
-; GCN-NEXT:    [[GEP3:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 3
 ; GCN-NEXT:    [[TMP1:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP2]], align 2
 ; GCN-NEXT:    [[GEP4:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 4
-; GCN-NEXT:    [[GEP5:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 5
 ; GCN-NEXT:    [[TMP2:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP4]], align 8
 ; GCN-NEXT:    [[GEP6:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 6
-; GCN-NEXT:    [[GEP7:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 7
 ; GCN-NEXT:    [[TMP3:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP6]], align 2
 ; GCN-NEXT:    [[GEP8:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 8
-; GCN-NEXT:    [[GEP9:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 9
 ; GCN-NEXT:    [[TMP4:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP8]], align 8
 ; GCN-NEXT:    [[GEP10:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 10
-; GCN-NEXT:    [[GEP11:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 11
 ; GCN-NEXT:    [[TMP5:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP10]], align 2
 ; GCN-NEXT:    [[GEP12:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 12
-; GCN-NEXT:    [[GEP13:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 13
 ; GCN-NEXT:    [[TMP6:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP12]], align 8
 ; GCN-NEXT:    [[GEP14:%.*]] = getelementptr i16, ptr addrspace(3) [[INPTR0]], i32 14
 ; GCN-NEXT:    [[TMP7:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP14]], align 2
-; GCN-NEXT:    [[TMP8:%.*]] = extractelement <2 x i16> [[TMP1]], i32 0
-; GCN-NEXT:    [[TMP9:%.*]] = extractelement <2 x i16> [[TMP1]], i32 1
-; GCN-NEXT:    [[TMP10:%.*]] = extractelement <2 x i16> [[TMP2]], i32 0
-; GCN-NEXT:    [[TMP11:%.*]] = extractelement <2 x i16> [[TMP2]], i32 1
-; GCN-NEXT:    [[TMP12:%.*]] = extractelement <2 x i16> [[TMP3]], i32 0
-; GCN-NEXT:    [[TMP13:%.*]] = extractelement <2 x i16> [[TMP3]], i32 1
-; GCN-NEXT:    [[TMP14:%.*]] = extractelement <2 x i16> [[TMP4]], i32 0
-; GCN-NEXT:    [[TMP15:%.*]] = extractelement <2 x i16> [[TMP4]], i32 1
-; GCN-NEXT:    [[TMP24:%.*]] = extractelement <2 x i16> [[TMP5]], i32 0
-; GCN-NEXT:    [[TMP26:%.*]] = extractelement <2 x i16> [[TMP5]], i32 1
-; GCN-NEXT:    [[TMP28:%.*]] = extractelement <2 x i16> [[TMP6]], i32 0
-; GCN-NEXT:    [[TMP38:%.*]] = extractelement <2 x i16> [[TMP6]], i32 1
 ; GCN-NEXT:    br label %[[DO_BODY:.*]]
 ; GCN:       [[DO_BODY]]:
-; GCN-NEXT:    [[PHI2:%.*]] = phi i16 [ [[TMP8]], %[[ENTRY]] ], [ [[TMP30:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI3:%.*]] = phi i16 [ [[TMP9]], %[[ENTRY]] ], [ [[OTHERELE3:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI4:%.*]] = phi i16 [ [[TMP10]], %[[ENTRY]] ], [ [[TMP39:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI5:%.*]] = phi i16 [ [[TMP11]], %[[ENTRY]] ], [ [[OTHERELE5:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI6:%.*]] = phi i16 [ [[TMP12]], %[[ENTRY]] ], [ [[TMP32:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI7:%.*]] = phi i16 [ [[TMP13]], %[[ENTRY]] ], [ [[OTHERELE7:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI8:%.*]] = phi i16 [ [[TMP14]], %[[ENTRY]] ], [ [[TMP40:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI9:%.*]] = phi i16 [ [[TMP15]], %[[ENTRY]] ], [ [[OTHERELE9:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI10:%.*]] = phi i16 [ [[TMP24]], %[[ENTRY]] ], [ [[TMP34:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI11:%.*]] = phi i16 [ [[TMP26]], %[[ENTRY]] ], [ [[OTHERELE11:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI12:%.*]] = phi i16 [ [[TMP28]], %[[ENTRY]] ], [ [[TMP35:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[PHI13:%.*]] = phi i16 [ [[TMP38]], %[[ENTRY]] ], [ [[OTHERELE13:%.*]], %[[DO_BODY]] ]
-; GCN-NEXT:    [[TMP41:%.*]] = phi <2 x i16> [ [[TMP0]], %[[ENTRY]] ], [ [[TMP16:%.*]], %[[DO_BODY]] ]
+; GCN-NEXT:    [[TMP8:%.*]] = phi <2 x i16> [ [[TMP0]], %[[ENTRY]] ], [ [[TMP16:%.*]], %[[DO_BODY]] ]
+; GCN-NEXT:    [[TMP9:%.*]] = phi <2 x i16> [ [[TMP1]], %[[ENTRY]] ], [ [[TMP17:%.*]], %[[DO_BODY]] ]
+; GCN-NEXT:    [[TMP10:%.*]] = phi <2 x i16> [ [[TMP2]], %[[ENTRY]] ], [ [[TMP18:%.*]], %[[DO_BODY]] ]
+; GCN-NEXT:    [[TMP11:%.*]] = phi <2 x i16> [ [[TMP3]], %[[ENTRY]] ], [ [[TMP19:%.*]], %[[DO_BODY]] ]
+; GCN-NEXT:    [[TMP12:%.*]] = phi <2 x i16> [ [[TMP4]], %[[ENTRY]] ], [ [[TMP20:%.*]], %[[DO_BODY]] ]
+; GCN-NEXT:    [[TMP13:%.*]] = phi <2 x i16> [ [[TMP5]], %[[ENTRY]] ], [ [[TMP21:%.*]], %[[DO_BODY]] ]
+; GCN-NEXT:    [[TMP14:%.*]] = phi <2 x i16> [ [[TMP6]], %[[ENTRY]] ], [ [[TMP22:%.*]], %[[DO_BODY]] ]
 ; GCN-NEXT:    [[TMP42:%.*]] = phi <2 x i16> [ [[TMP7]], %[[ENTRY]] ], [ [[TMP23:%.*]], %[[DO_BODY]] ]
 ; GCN-NEXT:    [[TMP16]] = load <2 x i16>, ptr addrspace(3) [[INPTR0]], align 8
-; GCN-NEXT:    [[OTHERELE3]] = load i16, ptr addrspace(3) [[GEP3]], align 1
-; GCN-NEXT:    [[TMP17:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP2]], align 2
-; GCN-NEXT:    [[OTHERELE5]] = load i16, ptr addrspace(3) [[GEP5]], align 1
-; GCN-NEXT:    [[TMP18:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP4]], align 8
-; GCN-NEXT:    [[OTHERELE7]] = load i16, ptr addrspace(3) [[GEP7]], align 1
-; GCN-NEXT:    [[TMP19:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP6]], align 2
-; GCN-NEXT:    [[OTHERELE9]] = load i16, ptr addrspace(3) [[GEP9]], align 1
-; GCN-NEXT:    [[TMP20:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP8]], align 8
-; GCN-NEXT:    [[OTHERELE11]] = load i16, ptr addrspace(3) [[GEP11]], align 1
-; GCN-NEXT:    [[TMP21:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP10]], align 2
-; GCN-NEXT:    [[OTHERELE13]] = load i16, ptr addrspace(3) [[GEP13]], align 1
-; GCN-NEXT:    [[TMP22:%.*]] = load <2 x i16>, ptr addrspace(3) [[GEP12]], align 8
+; GCN-NEXT:    [[TMP17]] = load <2 x i16>, ptr addrspace(3) [[GEP2]], align 2
+; GCN-NEXT:    [[TMP18]] = load <2 x i16>, ptr addrspace(3) [[GEP4]], align 8
+; GCN-NEXT:    [[TMP19]] = load <2 x i16>, ptr addrspace(3) [[GEP6]], align 2
+; GCN-NEXT:    [[TMP20]] = load <2 x i16>, ptr addrspace(3) [[GEP8]], align 8
+; GCN-NEXT:    [[TMP21]] = load <2 x i16>, ptr addrspace(3) [[GEP10]], align 2
+; GCN-NEXT:    [[TMP22]] = load <2 x i16>, ptr addrspace(3) [[GEP12]], align 8
 ; GCN-NEXT:    [[TMP23]] = load <2 x i16>, ptr addrspace(3) [[GEP14]], align 2
 ; GCN-NEXT:    [[CMP:%.*]] = icmp eq i32 [[FLAG]], 0
-; GCN-NEXT:    [[TMP30]] = extractelement <2 x i16> [[TMP17]], i32 0
-; GCN-NEXT:    [[TMP39]] = extractelement <2 x i16> [[TMP18]], i32 0
-; GCN-NEXT:    [[TMP32]] = extractelement <2 x i16> [[TMP19]], i32 0
-; GCN-NEXT:    [[TMP40]] = extractelement <2 x i16> [[TMP20]], i32 0
-; GCN-NEXT:    [[TMP34]] = extractelement <2 x i16> [[TMP21]], i32 0
-; GCN-NEXT:    [[TMP35]] = extractelement <2 x i16> [[TMP22]], i32 0
 ; GCN-NEXT:    br i1 [[CMP]], label %[[EXIT:.*]], label %[[DO_BODY]]
 ; GCN:       [[EXIT]]:
-; GCN-NEXT:    [[TMP36:%.*]] = shufflevector <2 x i16> [[TMP16]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[TMP37:%.*]] = shufflevector <2 x i16> [[TMP17]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[VEC038:%.*]] = shufflevector <16 x i16> [[TMP36]], <16 x i16> [[TMP37]], <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; GCN-NEXT:    [[TMP24:%.*]] = shufflevector <2 x i16> [[TMP16]], <2 x i16> [[TMP17]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[TMP25:%.*]] = shufflevector <2 x i16> [[TMP18]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[VEC059:%.*]] = shufflevector <16 x i16> [[VEC038]], <16 x i16> [[TMP25]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 16, i32 17, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; GCN-NEXT:    [[TMP26:%.*]] = shufflevector <16 x i16> [[TMP24]], <16 x i16> [[TMP25]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[TMP27:%.*]] = shufflevector <2 x i16> [[TMP19]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[VEC0710:%.*]] = shufflevector <16 x i16> [[VEC059]], <16 x i16> [[TMP27]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 16, i32 17, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; GCN-NEXT:    [[TMP28:%.*]] = shufflevector <16 x i16> [[TMP26]], <16 x i16> [[TMP27]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[TMP29:%.*]] = shufflevector <2 x i16> [[TMP20]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[VEC0911:%.*]] = shufflevector <16 x i16> [[VEC0710]], <16 x i16> [[TMP29]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 16, i32 17, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
+; GCN-NEXT:    [[TMP30:%.*]] = shufflevector <16 x i16> [[TMP28]], <16 x i16> [[TMP29]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[TMP31:%.*]] = shufflevector <2 x i16> [[TMP21]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[VEC01112:%.*]] = shufflevector <16 x i16> [[VEC0911]], <16 x i16> [[TMP31]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 12, i32 13, i32 14, i32 15>
+; GCN-NEXT:    [[TMP32:%.*]] = shufflevector <16 x i16> [[TMP30]], <16 x i16> [[TMP31]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[TMP33:%.*]] = shufflevector <2 x i16> [[TMP22]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[TMP58:%.*]] = shufflevector <16 x i16> [[VEC01112]], <16 x i16> [[TMP33]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 14, i32 15>
-; GCN-NEXT:    [[TMP60:%.*]] = shufflevector <2 x i16> [[TMP23]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP47:%.*]] = shufflevector <16 x i16> [[TMP32]], <16 x i16> [[TMP33]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP48:%.*]] = shufflevector <2 x i16> [[TMP23]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP49:%.*]] = shufflevector <16 x i16> [[TMP47]], <16 x i16> [[TMP48]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 16, i32 17>
+; GCN-NEXT:    [[TMP37:%.*]] = shufflevector <2 x i16> [[TMP0]], <2 x i16> [[TMP1]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP38:%.*]] = shufflevector <2 x i16> [[TMP2]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP39:%.*]] = shufflevector <16 x i16> [[TMP37]], <16 x i16> [[TMP38]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP40:%.*]] = shufflevector <2 x i16> [[TMP3]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP41:%.*]] = shufflevector <16 x i16> [[TMP39]], <16 x i16> [[TMP40]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP57:%.*]] = shufflevector <2 x i16> [[TMP4]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP43:%.*]] = shufflevector <16 x i16> [[TMP41]], <16 x i16> [[TMP57]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP44:%.*]] = shufflevector <2 x i16> [[TMP5]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP45:%.*]] = shufflevector <16 x i16> [[TMP43]], <16 x i16> [[TMP44]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP46:%.*]] = shufflevector <2 x i16> [[TMP6]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP58:%.*]] = shufflevector <16 x i16> [[TMP45]], <16 x i16> [[TMP46]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP60:%.*]] = shufflevector <2 x i16> [[TMP7]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[VEC2157:%.*]] = shufflevector <16 x i16> [[TMP58]], <16 x i16> [[TMP60]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 16, i32 17>
-; GCN-NEXT:    [[TMP50:%.*]] = shufflevector <2 x i16> [[TMP0]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[TMP51:%.*]] = shufflevector <2 x i16> [[TMP1]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP50:%.*]] = shufflevector <2 x i16> [[TMP8]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP51:%.*]] = shufflevector <2 x i16> [[TMP9]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[VEC231:%.*]] = shufflevector <16 x i16> [[TMP50]], <16 x i16> [[TMP51]], <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
-; GCN-NEXT:    [[TMP52:%.*]] = shufflevector <2 x i16> [[TMP2]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP52:%.*]] = shufflevector <2 x i16> [[TMP10]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[VEC252:%.*]] = shufflevector <16 x i16> [[VEC231]], <16 x i16> [[TMP52]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 16, i32 17, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
-; GCN-NEXT:    [[TMP53:%.*]] = shufflevector <2 x i16> [[TMP3]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP53:%.*]] = shufflevector <2 x i16> [[TMP11]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[VEC273:%.*]] = shufflevector <16 x i16> [[VEC252]], <16 x i16> [[TMP53]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 16, i32 17, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
-; GCN-NEXT:    [[TMP54:%.*]] = shufflevector <2 x i16> [[TMP4]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP54:%.*]] = shufflevector <2 x i16> [[TMP12]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[VEC294:%.*]] = shufflevector <16 x i16> [[VEC273]], <16 x i16> [[TMP54]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 16, i32 17, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
-; GCN-NEXT:    [[TMP55:%.*]] = shufflevector <2 x i16> [[TMP5]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP55:%.*]] = shufflevector <2 x i16> [[TMP13]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[VEC2115:%.*]] = shufflevector <16 x i16> [[VEC294]], <16 x i16> [[TMP55]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 16, i32 17, i32 12, i32 13, i32 14, i32 15>
-; GCN-NEXT:    [[TMP56:%.*]] = shufflevector <2 x i16> [[TMP6]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP56:%.*]] = shufflevector <2 x i16> [[TMP14]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[VEC2136:%.*]] = shufflevector <16 x i16> [[VEC2115]], <16 x i16> [[TMP56]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 16, i32 17, i32 14, i32 15>
-; GCN-NEXT:    [[TMP59:%.*]] = shufflevector <2 x i16> [[TMP7]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; GCN-NEXT:    [[TMP59:%.*]] = shufflevector <2 x i16> [[TMP42]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
 ; GCN-NEXT:    [[VEC2151:%.*]] = shufflevector <16 x i16> [[VEC2136]], <16 x i16> [[TMP59]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 16, i32 17>
-; GCN-NEXT:    [[TMP57:%.*]] = shufflevector <2 x i16> [[TMP41]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[VEC22:%.*]] = insertelement <16 x i16> [[TMP57]], i16 [[PHI2]], i64 2
-; GCN-NEXT:    [[VEC23:%.*]] = insertelement <16 x i16> [[VEC22]], i16 [[PHI3]], i64 3
-; GCN-NEXT:    [[VEC24:%.*]] = insertelement <16 x i16> [[VEC23]], i16 [[PHI4]], i64 4
-; GCN-NEXT:    [[VEC25:%.*]] = insertelement <16 x i16> [[VEC24]], i16 [[PHI5]], i64 5
-; GCN-NEXT:    [[VEC26:%.*]] = insertelement <16 x i16> [[VEC25]], i16 [[PHI6]], i64 6
-; GCN-NEXT:    [[VEC27:%.*]] = insertelement <16 x i16> [[VEC26]], i16 [[PHI7]], i64 7
-; GCN-NEXT:    [[VEC28:%.*]] = insertelement <16 x i16> [[VEC27]], i16 [[PHI8]], i64 8
-; GCN-NEXT:    [[VEC29:%.*]] = insertelement <16 x i16> [[VEC28]], i16 [[PHI9]], i64 9
-; GCN-NEXT:    [[VEC210:%.*]] = insertelement <16 x i16> [[VEC29]], i16 [[PHI10]], i64 10
-; GCN-NEXT:    [[VEC211:%.*]] = insertelement <16 x i16> [[VEC210]], i16 [[PHI11]], i64 11
-; GCN-NEXT:    [[VEC212:%.*]] = insertelement <16 x i16> [[VEC211]], i16 [[PHI12]], i64 12
-; GCN-NEXT:    [[VEC213:%.*]] = insertelement <16 x i16> [[VEC212]], i16 [[PHI13]], i64 13
-; GCN-NEXT:    [[TMP61:%.*]] = shufflevector <2 x i16> [[TMP42]], <2 x i16> poison, <16 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; GCN-NEXT:    [[VEC2152:%.*]] = shufflevector <16 x i16> [[VEC213]], <16 x i16> [[TMP61]], <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 16, i32 17>
-; GCN-NEXT:    store <16 x i16> [[VEC2151]], ptr [[OUT]], align 32
-; GCN-NEXT:    store <16 x i16> [[VEC2157]], ptr [[OUT1]], align 32
-; GCN-NEXT:    store <16 x i16> [[VEC2152]], ptr [[OUT2]], align 32
+; GCN-NEXT:    store <16 x i16> [[VEC2157]], ptr [[OUT]], align 32
+; GCN-NEXT:    store <16 x i16> [[TMP49]], ptr [[OUT1]], align 32
+; GCN-NEXT:    store <16 x i16> [[VEC2151]], ptr [[OUT2]], align 32
 ; GCN-NEXT:    ret void
 ;
 entry:

diff  --git a/llvm/test/Transforms/SLPVectorizer/X86/extractelement-single-use-many-nodes.ll b/llvm/test/Transforms/SLPVectorizer/X86/extractelement-single-use-many-nodes.ll
index 28bab3276c47d..6942df532ae29 100644
--- a/llvm/test/Transforms/SLPVectorizer/X86/extractelement-single-use-many-nodes.ll
+++ b/llvm/test/Transforms/SLPVectorizer/X86/extractelement-single-use-many-nodes.ll
@@ -7,9 +7,8 @@ define void @foo(double %i) {
 ; CHECK-NEXT:  bb:
 ; CHECK-NEXT:    [[TMP0:%.*]] = insertelement <4 x double> <double 0.000000e+00, double 0.000000e+00, double poison, double 0.000000e+00>, double [[I]], i32 2
 ; CHECK-NEXT:    [[TMP1:%.*]] = fsub <4 x double> zeroinitializer, [[TMP0]]
-; CHECK-NEXT:    [[TMP3:%.*]] = insertelement <2 x double> poison, double [[I]], i32 0
-; CHECK-NEXT:    [[TMP4:%.*]] = fsub <2 x double> zeroinitializer, [[TMP3]]
 ; CHECK-NEXT:    [[I82:%.*]] = fsub double 0.000000e+00, poison
+; CHECK-NEXT:    [[I103:%.*]] = fsub double 0.000000e+00, [[I]]
 ; CHECK-NEXT:    [[TMP8:%.*]] = shufflevector <4 x double> [[TMP1]], <4 x double> poison, <8 x i32> <i32 poison, i32 0, i32 poison, i32 1, i32 poison, i32 0, i32 poison, i32 1>
 ; CHECK-NEXT:    [[TMP5:%.*]] = shufflevector <8 x double> [[TMP8]], <8 x double> <double 0.000000e+00, double poison, double poison, double poison, double 0.000000e+00, double poison, double poison, double poison>, <8 x i32> <i32 8, i32 1, i32 poison, i32 3, i32 12, i32 5, i32 poison, i32 7>
 ; CHECK-NEXT:    [[TMP6:%.*]] = insertelement <8 x double> [[TMP5]], double [[I82]], i32 2
@@ -22,13 +21,11 @@ define void @foo(double %i) {
 ; CHECK-NEXT:    [[TMP17:%.*]] = call i1 @llvm.vector.reduce.and.v8i1(<8 x i1> [[TMP16]])
 ; CHECK-NEXT:    br i1 [[TMP17]], label [[BB58:%.*]], label [[BB115:%.*]]
 ; CHECK:       bb115:
-; CHECK-NEXT:    [[TMP18:%.*]] = fmul <2 x double> zeroinitializer, [[TMP4]]
-; CHECK-NEXT:    [[TMP19:%.*]] = extractelement <2 x double> [[TMP18]], i32 0
-; CHECK-NEXT:    [[TMP20:%.*]] = extractelement <2 x double> [[TMP18]], i32 1
+; CHECK-NEXT:    [[TMP19:%.*]] = fmul double 0.000000e+00, [[I103]]
+; CHECK-NEXT:    [[TMP20:%.*]] = fmul double 0.000000e+00, [[I82]]
 ; CHECK-NEXT:    [[I118:%.*]] = fadd double [[TMP19]], [[TMP20]]
 ; CHECK-NEXT:    [[TMP21:%.*]] = fmul <4 x double> zeroinitializer, [[TMP1]]
-; CHECK-NEXT:    [[TMP22:%.*]] = shufflevector <2 x double> [[TMP4]], <2 x double> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
-; CHECK-NEXT:    [[TMP23:%.*]] = shufflevector <4 x double> <double 0.000000e+00, double 0.000000e+00, double 0.000000e+00, double poison>, <4 x double> [[TMP22]], <4 x i32> <i32 0, i32 1, i32 2, i32 5>
+; CHECK-NEXT:    [[TMP23:%.*]] = insertelement <4 x double> <double 0.000000e+00, double 0.000000e+00, double 0.000000e+00, double poison>, double [[I82]], i32 3
 ; CHECK-NEXT:    [[TMP24:%.*]] = fadd <4 x double> [[TMP21]], [[TMP23]]
 ; CHECK-NEXT:    [[TMP25:%.*]] = fadd <4 x double> [[TMP24]], zeroinitializer
 ; CHECK-NEXT:    [[TMP26:%.*]] = select <4 x i1> zeroinitializer, <4 x double> zeroinitializer, <4 x double> [[TMP25]]

diff  --git a/llvm/test/Transforms/SLPVectorizer/X86/vec_list_bias-inseltpoison.ll b/llvm/test/Transforms/SLPVectorizer/X86/vec_list_bias-inseltpoison.ll
index e3a6020a542fb..2cc2f28ccf6d5 100644
--- a/llvm/test/Transforms/SLPVectorizer/X86/vec_list_bias-inseltpoison.ll
+++ b/llvm/test/Transforms/SLPVectorizer/X86/vec_list_bias-inseltpoison.ll
@@ -25,7 +25,6 @@ define void @test(ptr nocapture %t2) {
 ; CHECK-NEXT:    [[T24:%.*]] = add nsw i32 [[T23]], [[T21]]
 ; CHECK-NEXT:    [[T25:%.*]] = sub nsw i32 [[T21]], [[T23]]
 ; CHECK-NEXT:    [[T27:%.*]] = sub nsw i32 [[T3]], [[T24]]
-; CHECK-NEXT:    [[T32:%.*]] = mul nsw i32 [[T27]], 6270
 ; CHECK-NEXT:    [[T37:%.*]] = add nsw i32 [[T25]], [[T11]]
 ; CHECK-NEXT:    [[T38:%.*]] = add nsw i32 [[T17]], [[T5]]
 ; CHECK-NEXT:    [[T39:%.*]] = add nsw i32 [[T37]], [[T38]]
@@ -34,7 +33,6 @@ define void @test(ptr nocapture %t2) {
 ; CHECK-NEXT:    [[T42:%.*]] = mul nsw i32 [[T17]], 16819
 ; CHECK-NEXT:    [[T47:%.*]] = mul nsw i32 [[T37]], -16069
 ; CHECK-NEXT:    [[T48:%.*]] = mul nsw i32 [[T38]], -3196
-; CHECK-NEXT:    [[T49:%.*]] = add nsw i32 [[T40]], [[T47]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = load <2 x i32>, ptr [[T8]], align 4
 ; CHECK-NEXT:    [[T15:%.*]] = load i32, ptr [[T14]], align 4
 ; CHECK-NEXT:    [[T9:%.*]] = load i32, ptr [[T8]], align 4
@@ -42,17 +40,20 @@ define void @test(ptr nocapture %t2) {
 ; CHECK-NEXT:    [[T30:%.*]] = add nsw i32 [[T27]], [[T29]]
 ; CHECK-NEXT:    [[T31:%.*]] = mul nsw i32 [[T30]], 4433
 ; CHECK-NEXT:    [[T34:%.*]] = mul nsw i32 [[T29]], -15137
-; CHECK-NEXT:    [[TMP2:%.*]] = shufflevector <2 x i32> [[TMP1]], <2 x i32> poison, <2 x i32> <i32 1, i32 poison>
-; CHECK-NEXT:    [[TMP3:%.*]] = insertelement <2 x i32> [[TMP2]], i32 [[T40]], i32 1
-; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[T48]], i32 1
-; CHECK-NEXT:    [[TMP5:%.*]] = add nsw <2 x i32> [[TMP3]], [[TMP4]]
-; CHECK-NEXT:    [[TMP6:%.*]] = shufflevector <2 x i32> [[TMP5]], <2 x i32> poison, <8 x i32> <i32 0, i32 1, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; CHECK-NEXT:    [[T67:%.*]] = insertelement <8 x i32> [[TMP6]], i32 [[T32]], i32 2
-; CHECK-NEXT:    [[T68:%.*]] = insertelement <8 x i32> [[T67]], i32 [[T49]], i32 3
-; CHECK-NEXT:    [[T701:%.*]] = shufflevector <8 x i32> [[T68]], <8 x i32> [[TMP6]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 8, i32 9, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP2:%.*]] = shufflevector <2 x i32> [[TMP1]], <2 x i32> poison, <4 x i32> <i32 1, i32 poison, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP3:%.*]] = insertelement <4 x i32> [[TMP2]], i32 [[T40]], i32 1
+; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <4 x i32> [[TMP3]], i32 [[T27]], i32 2
+; CHECK-NEXT:    [[TMP5:%.*]] = insertelement <4 x i32> [[TMP4]], i32 [[T47]], i32 3
+; CHECK-NEXT:    [[TMP6:%.*]] = shufflevector <2 x i32> [[TMP1]], <2 x i32> poison, <4 x i32> <i32 0, i32 poison, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP7:%.*]] = shufflevector <4 x i32> <i32 poison, i32 poison, i32 6270, i32 poison>, <4 x i32> [[TMP6]], <4 x i32> <i32 4, i32 poison, i32 2, i32 poison>
+; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x i32> [[TMP7]], i32 [[T48]], i32 1
+; CHECK-NEXT:    [[TMP9:%.*]] = insertelement <4 x i32> [[TMP8]], i32 [[T40]], i32 3
+; CHECK-NEXT:    [[TMP10:%.*]] = add nsw <4 x i32> [[TMP5]], [[TMP9]]
+; CHECK-NEXT:    [[TMP11:%.*]] = mul nsw <4 x i32> [[TMP5]], [[TMP9]]
+; CHECK-NEXT:    [[TMP12:%.*]] = shufflevector <4 x i32> [[TMP10]], <4 x i32> [[TMP11]], <4 x i32> <i32 0, i32 1, i32 6, i32 3>
+; CHECK-NEXT:    [[T701:%.*]] = shufflevector <4 x i32> [[TMP12]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 poison, i32 3>
 ; CHECK-NEXT:    [[T71:%.*]] = insertelement <8 x i32> [[T701]], i32 [[T34]], i32 6
-; CHECK-NEXT:    [[T72:%.*]] = insertelement <8 x i32> [[T71]], i32 [[T49]], i32 7
-; CHECK-NEXT:    [[T76:%.*]] = shl <8 x i32> [[T72]], splat (i32 3)
+; CHECK-NEXT:    [[T76:%.*]] = shl <8 x i32> [[T71]], splat (i32 3)
 ; CHECK-NEXT:    store <8 x i32> [[T76]], ptr [[T2]], align 4
 ; CHECK-NEXT:    ret void
 ;


        


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