[llvm] [GlobalISel] Make scalar G_SHUFFLE_VECTOR illegal. (PR #140508)

[via llvm-commits]

github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions h,cpp -- llvm/include/llvm/CodeGen/GlobalISel/CombinerHelper.h llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp llvm/lib/CodeGen/MachineVerifier.cpp llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
index fceca2074..6078288c1 100644
--- a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -3346,12 +3346,10 @@ bool IRTranslator::translateShuffleVector(const User &U,
       if (M < SrcElts) {
         MIRBuilder.buildExtractVectorElementConstant(
             getOrCreateVReg(U), getOrCreateVReg(*U.getOperand(0)), M);
-      }
-      else if (M < SrcElts * 2) {
+      } else if (M < SrcElts * 2) {
         MIRBuilder.buildExtractVectorElementConstant(
             getOrCreateVReg(U), getOrCreateVReg(*U.getOperand(1)), M - SrcElts);
-      }
-      else {
+      } else {
         MIRBuilder.buildUndef(getOrCreateVReg(U));
       }
       return true;
diff --git a/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp b/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
index fe5022b71..9262f0c84 100644
--- a/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
+++ b/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
@@ -1178,14 +1178,14 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST)
       .moreElementsIf(
           [](const LegalityQuery &Query) {
             return Query.Types[0].getNumElements() >
-                       Query.Types[1].getNumElements();
+                   Query.Types[1].getNumElements();
           },
           changeTo(1, 0))
       .moreElementsToNextPow2(0)
       .moreElementsIf(
           [](const LegalityQuery &Query) {
             return Query.Types[0].getNumElements() <
-                       Query.Types[1].getNumElements();
+                   Query.Types[1].getNumElements();
           },
           changeTo(0, 1))
       .widenScalarOrEltToNextPow2OrMinSize(0, 8)

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https://github.com/llvm/llvm-project/pull/140508