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[X86][SSE] Improve ISD::FP_TO_*INT_SAT vector lowering #51548

Open Quuxplusone opened 3 years ago

Quuxplusone commented 3 years ago
Bugzilla Link PR52581
Status NEW
Importance P enhancement
Reported by Simon Pilgrim (llvm-dev@redking.me.uk)
Reported on 2021-11-22 09:10:34 -0800
Last modified on 2021-11-23 00:51:21 -0800
Version trunk
Hardware PC Windows NT
CC craig.topper@gmail.com, david.green@arm.com, llvm-bugs@lists.llvm.org, llvm-dev@redking.me.uk, pengfei.wang@intel.com, spatel+llvm@rotateright.com
Fixed by commit(s)
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See also

https://gcc.godbolt.org/z/3q7KGs6h5

We currently scalarize these cases, but we should be able to make use of SSE behaviour for out-of-range integer results to keep these fully vectorized.