Kai Luo fec7da8285 [PowerPC][Peephole] Check if extsw's second operand is a virtual register ...

Summary:
When combining `extsw` and `sldi` in `PPCMIPeephole`, we have to check
if `extsw`'s second operand is a virtual register, otherwise we might
get miscompile.

Differential Revision: https://reviews.llvm.org/D65315

llvm-svn: 367645

2019-08-02 03:14:17 +00:00

56 KiB

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