[all-commits] [llvm/llvm-project] af3a7d: [X86] add mayRaiseFPException flag and FPCW regist...

[Pengfei Wang via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: af3a7de20c3f92f5aee828d03049032200b21f08
      https://github.com/llvm/llvm-project/commit/af3a7de20c3f92f5aee828d03049032200b21f08
  Author: Pengfei Wang <pengfei.wang at intel.com>
  Date:   2019-11-01 (Fri, 01 Nov 2019)

  Changed paths:
    M clang/test/CodeGen/ms-inline-asm.c
    M llvm/lib/Target/X86/X86InstrFPStack.td
    M llvm/lib/Target/X86/X86InstrFormats.td
    A llvm/test/CodeGen/X86/x87-reg-usage.mir

  Log Message:
  -----------
  [X86] add mayRaiseFPException flag and FPCW registers for X87  instructions

Summary:
This patch adds flag "mayRaiseFPException"  , FPCW and FPSW for X87 instructions which could raise
float exception.

Reviewers: pengfei, RKSimon, andrew.w.kaylor, uweigand, kpn, spatel, cameron.mcinally, craig.topper

Reviewed By: craig.topper

Subscribers: thakis, hiraditya, llvm-commits

Patch by LiuChen.

Differential Revision: https://reviews.llvm.org/D68854