[all-commits] [llvm/llvm-project] 20a60f: [X86] Explicitly add popcnt feature to Intel CPUs ...

[topperc via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 20a60f46f505fc790e126b8b860c689870355f36
      https://github.com/llvm/llvm-project/commit/20a60f46f505fc790e126b8b860c689870355f36
  Author: Craig Topper <craig.topper at intel.com>
  Date:   2020-06-28 (Sun, 28 Jun 2020)

  Changed paths:
    M clang/lib/Basic/Targets/X86.cpp
    M clang/test/Preprocessor/x86_target_features.c

  Log Message:
  -----------
  [X86] Explicitly add popcnt feature to Intel CPUs with SSE4.2 in the frontend.

Previously we inferred it if sse4.2 ended up being enabled after
all feature processing. But writing -march=nehalem -mno-sse4.2
should have popcnt enabled.