topperc wrote:

Won't this allow these operations to move across calls or instructions that 
change rounding mode? Doesn't that violate the strictfp semantics?

> This method has already been used to support strictfp nodes on targets with 
> limited support of strictfp operations.

For these targets, I thought we generate a error (or maybe its a warning) in 
clang if any of the flags that should create constrained intrinsics is used.

https://github.com/llvm/llvm-project/pull/179276
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