[all-commits] [llvm/llvm-project] fa7cd5: clang: Guess at some platform FTZ/DAZ default sett...

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: fa7cd549d604bfd8f9dce5d649a19720cbc39cca
      https://github.com/llvm/llvm-project/commit/fa7cd549d604bfd8f9dce5d649a19720cbc39cca
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-02-12 (Wed, 12 Feb 2020)

  Changed paths:
    M clang/include/clang/Driver/ToolChain.h
    M clang/lib/Driver/ToolChain.cpp
    M clang/lib/Driver/ToolChains/Gnu.cpp
    M clang/lib/Driver/ToolChains/Linux.cpp
    M clang/lib/Driver/ToolChains/Linux.h
    M clang/lib/Driver/ToolChains/MinGW.cpp
    M clang/lib/Driver/ToolChains/PS4CPU.h
    A clang/test/Driver/default-denormal-fp-math.c

  Log Message:
  -----------
  clang: Guess at some platform FTZ/DAZ default settings

This is to avoid performance regressions when the default attribute
behavior is fixed to assume ieee.

I tested the default on x86_64 ubuntu, which seems to default to
FTZ/DAZ, but am guessing for x86 and PS4.