[all-commits] [llvm/llvm-project] cd2c5a: Reland D74436 "Change clang option -ffp-model=prec...

[Melanie Blower via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: cd2c5af6dfd6e32ee7043894bcb42981ce99e8ac
      https://github.com/llvm/llvm-project/commit/cd2c5af6dfd6e32ee7043894bcb42981ce99e8ac
  Author: Melanie Blower <melanie.blower at intel.com>
  Date:   2020-02-18 (Tue, 18 Feb 2020)

  Changed paths:
    M clang/docs/UsersManual.rst
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/CodeGen/ppc-emmintrin.c
    M clang/test/CodeGen/ppc-xmmintrin.c
    M clang/test/Driver/fp-model.c

  Log Message:
  -----------
  Reland D74436 "Change clang option -ffp-model=precise to select ffp-contract=on""
    Change clang option -ffp-model=precise, the default, to select ffp-contract=on
    The patch caused some problems for PowerPC but ibm has made
    adjustments so I am resubmitting this patch.  Additionally, Andy looked
    at the performance regressions on LNT and it looks like a loop
    unrolling decision that could be adjusted.

    Reviewers: rjmccall, Andy Kaylor

    Differential Revision: https://reviews.llvm.org/D74436