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Commit a678677d authored by Craig Topper's avatar Craig Topper
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[X86] add mayRaiseFPException flag and FPCW registers for X87 instructions 

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

Patch by LiuChen. With a couple small fixes from me.

Differential Revision: https://reviews.llvm.org/D68854
parent 2ab1b8c1
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