[all-commits] [llvm/llvm-project] 001a12: [libc][NFC] Make x86_64 fenv functions msan safe.

[Siva Chandra via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 001a12ed59c354aa759ff3e104748c36803cfaa2
      https://github.com/llvm/llvm-project/commit/001a12ed59c354aa759ff3e104748c36803cfaa2
  Author: Siva Chandra Reddy <sivachandra at google.com>
  Date:   2021-03-08 (Mon, 08 Mar 2021)

  Changed paths:
    M libc/src/__support/CMakeLists.txt
    M libc/utils/FPUtil/CMakeLists.txt
    M libc/utils/FPUtil/x86_64/FEnv.h

  Log Message:
  -----------
  [libc][NFC] Make x86_64 fenv functions msan safe.

These functions used inline asm to read FPU state. This change adds
explicit unpoisoning in these functions as the sanitizers don't see the
read operations.