[all-commits] [llvm/llvm-project] cab9c0: [Clang] Fix behavior of -ffp-model option when ove...

[Qiu Chaofan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cab9c02bd97f520cb8a01a9197505438581f7de8
      https://github.com/llvm/llvm-project/commit/cab9c02bd97f520cb8a01a9197505438581f7de8
  Author: Qiu Chaofan <qiucofan at cn.ibm.com>
  Date:   2022-11-18 (Fri, 18 Nov 2022)

  Changed paths:
    M clang/lib/Driver/ToolChains/Clang.cpp
    M clang/test/CodeGen/ffp-model.c
    M clang/test/Driver/fp-model.c

  Log Message:
  -----------
  [Clang] Fix behavior of -ffp-model option when overriden

-ffp-model=strict -ffp-model=fast will still enable strict exception
handling behavior, therefore clang still emits constrained FP operations
in IR.

-ffp-model=fast -ffp-model=strict emits two warnings: one for strict
overriding fast, the other for strict overriding strict, which is
confusing.

Reviewed By: zahiraam

Differential Revision: https://reviews.llvm.org/D137618