[llvm-branch-commits] [MSAN] handle assorted AVX permutations (PR #143462)

[Thurston Dang via llvm-branch-commits]

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@@ -4161,7 +4161,7 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
 
   // Instrument AVX permutation intrinsic.
   // We apply the same permutation (argument index 1) to the shadow.
-  void handleAVXVpermilvar(IntrinsicInst &I) {
+  void handleAVXPermutation(IntrinsicInst &I) {
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thurstond wrote:

Since this function is being used for many more cases, please augment it with assertions that check whether the instruction is suitable for this handler:
- number of operands
- type and size of each operand
- relation of input and output operands

https://github.com/llvm/llvm-project/pull/143462