[llvm] ff78d23 - [AArch64] Ensure Source1 and Source2 are initialized.

[David Green via llvm-commits]

Author: David Green
Date: 2025-05-16T22:03:25+01:00
New Revision: ff78d233c0c40f94ef922a4ea1b88e02bd126040

URL: https://github.com/llvm/llvm-project/commit/ff78d233c0c40f94ef922a4ea1b88e02bd126040
DIFF: https://github.com/llvm/llvm-project/commit/ff78d233c0c40f94ef922a4ea1b88e02bd126040.diff

LOG: [AArch64] Ensure Source1 and Source2 are initialized.

Try to appease the sanatizers builders by making sure the Source1 and Source2
and initialized when passed to the tuple.

See #139331.

Added: 
    

Modified: 
    llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index a2ce9c97bb50e..3f10da23b3494 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -5485,7 +5485,7 @@ InstructionCost AArch64TTIImpl::getShuffleCost(
       SmallVector<int> NMask;
       // Split the existing mask into chunks of size LTNumElts. Track the source
       // sub-vectors to ensure the result has at most 2 inputs.
-      unsigned Source1, Source2;
+      unsigned Source1 = 0, Source2 = 0;
       unsigned NumSources = 0;
       for (unsigned E = 0; E < LTNumElts; E++) {
         int MaskElt = (N * LTNumElts + E < TpNumElts) ? Mask[N * LTNumElts + E]