Qiu Chaofan 1d782c2987 [PowerPC] Pass nofpexcept flag to custom lowered constrained ops ...

This is a follow-up of D86605. For strict DAG FP node, if its FP
exception behavior metadata is ignore, it should have nofpexcept flag.
But during custom lowering, this flag isn't passed down.

This is also seen on X86 target.

Reviewed By: uweigand

Differential Revision: https://reviews.llvm.org/D87390

2020-09-21 10:44:25 +08:00

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