David Green 57ff805a6d [DAG] Create fptoui.sat from clamped fptosi ...

As an extension to D111976, this converts clamp fptosi, clamped between
0 and (2^n)-1 to a fptoui.sat. This can greatly help on targets with
conversions that naturally saturate, such as Arm.

X86 disables the transform as some of the test cases increases in size.
A fptoui.sat necessitates a fp clamp without native support, so there is
little use in converting if the instruction is just going to be
expanded.

Differential Revision: https://reviews.llvm.org/D112428

2021-12-05 09:25:52 +00:00

918 KiB

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