[PATCH] D68854: [X86] add mayRaiseFPException flag and FPCW registers for X87 instructions

[LiuChen via Phabricator via llvm-commits]

LiuChen3 updated this revision to Diff 226860.
LiuChen3 added a comment.

The Diff 226855 has some problems. This one adds testcase to verify if x87 instructions use/def fpcw and fpcw registers.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68854/new/

https://reviews.llvm.org/D68854

Files:
  llvm/lib/Target/X86/X86InstrFPStack.td
  llvm/lib/Target/X86/X86InstrFormats.td
  llvm/test/CodeGen/X86/x87-reg-usage.mir

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