[all-commits] [llvm/llvm-project] f234f5: [msan] Instrument x86.pclmulqdq* intrinsics.

[Hans via All-commits]

  Branch: refs/heads/release/10.x
  Home:   https://github.com/llvm/llvm-project
  Commit: f234f5c2b1ed6486fe578744fe673912ef68b945
      https://github.com/llvm/llvm-project/commit/f234f5c2b1ed6486fe578744fe673912ef68b945
  Author: Evgenii Stepanov <eugenis at google.com>
  Date:   2020-01-27 (Mon, 27 Jan 2020)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
    A llvm/test/Instrumentation/MemorySanitizer/clmul.ll

  Log Message:
  -----------
  [msan] Instrument x86.pclmulqdq* intrinsics.

Summary:
These instructions ignore parts of the input vectors which makes the
default MSan handling too strict and causes false positive reports.

Reviewers: vitalybuka, RKSimon, thakis

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73374

(cherry picked from commit 1df8549b26892198ddf77dfd627eb9f979d45b7e)