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Summary

  1. [MachineCombiner][NFC] Add MustReduceRegisterPressure goal (details)
Commit 4830d458dd0d133354cbe1a616e38dfda8e096b8 by czhengsz
[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
The file was modifiedllvm/lib/Target/PowerPC/PPCInstrInfo.h
The file was modifiedllvm/lib/Target/AArch64/AArch64InstrInfo.cpp
The file was modifiedllvm/lib/Target/PowerPC/PPCInstrInfo.cpp
The file was modifiedllvm/include/llvm/CodeGen/TargetInstrInfo.h
The file was modifiedllvm/lib/Target/AArch64/AArch64InstrInfo.h
The file was modifiedllvm/lib/CodeGen/TargetInstrInfo.cpp
The file was modifiedllvm/lib/CodeGen/MachineCombiner.cpp