[PATCH] D82920: [MSAN] Implement experiemental vector reduction intrinsics

[Gui Andrade via Phabricator via llvm-commits]

guiand created this revision.
guiand added reviewers: eugenis, vitalybuka.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

Implement llvm.experiemental.vector.{add,mul,or,and,...}.
An IR test is included but no C test for lack of good way to
get the compiler to emit these.

These vectorized shadow operations for the and/or case
were shown mathematically to be equivalent to the binary
operations already present in MSAN.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D82920

Files:
  llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
  llvm/test/Instrumentation/MemorySanitizer/experimental-reduce.ll

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