QingShan Zhang 9c588f53fc [DAGCombine] Add hook to allow target specific test for sqrt input ...

PowerPC has instruction ftsqrt/xstsqrtdp etc to do the input test for software square root.
LLVM now tests it with smallest normalized value using abs + setcc. We should add hook to
target that has test instructions.

Reviewed By: Spatel, Chen Zheng, Qiu Chao Fang

Differential Revision: https://reviews.llvm.org/D80706

2020-11-25 05:37:15 +00:00

56 KiB

Raw Blame History

View Raw