Maryam Moghadas 934d5fa2b8 [PowerPC] Exploit xxperm, check for dead vectors and substitute vperm with xxperm ...

vperm instruction requires the data to be in the Altivec registers, if one of
the vector operands is not used after this vperm instruction then it can be
substituted by xxperm which doubles the number of available registers.

Reviewed By: stefanp

Differential Revision: https://reviews.llvm.org/D133700

2022-11-23 13:28:12 -06:00

14 KiB

Raw Blame History

View Raw