[llvm-branch-commits] [llvm] [RISCV] Support memcmp expansion for vectors (PR #114517)

[Luke Lau via llvm-branch-commits]

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@@ -2525,5 +2527,21 @@ RISCVTTIImpl::enableMemCmpExpansion(bool OptSize, bool IsZeroCmp) const {
     Options.LoadSizes = {8, 4, 2, 1};
   else
     Options.LoadSizes = {4, 2, 1};
+  if (IsZeroCmp && ST->hasVInstructions()) {
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lukel97 wrote:

Doesn't this mean that processors with only +unaligned-scalar-mem will now expand vector-sized compares?

https://github.com/llvm/llvm-project/pull/114517