Chen Zheng 4830d458dd [MachineCombiner][NFC] Add MustReduceRegisterPressure goal ...

add a new goal MustReduceRegisterPressure for machine combiner pass.

PowerPC will use this new goal to do some register pressure related optimization.

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D92068

2020-12-14 00:02:42 -05:00

187 KiB

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