[PATCH] D148596: [KMSAN] Enable on SystemZ

[Alexander Potapenko via Phabricator via cfe-commits]

glider added a comment.

LGTM with a nit.



================
Comment at: llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp:750
+                                                 ArgsTy... Args) {
+  if (TargetTriple.getArch() == Triple::systemz) {
+    return M.getOrInsertFunction(Name, Type::getVoidTy(*C),
----------------
I think people unfamiliar with the s390 ABI will still stumble upon this code.
Can you please add some comment along the lines of "On SystemZ, metadata hooks return the shadow/origin pair via an extra *MsanMetadata parameter"?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D148596/new/

https://reviews.llvm.org/D148596