[PATCH] D127530: [PowerPC] Extend GlobalISel implementation to emit and/or/xor.

[ChenZheng via Phabricator via llvm-commits]

shchenz added inline comments.


================
Comment at: llvm/lib/Target/PowerPC/GISel/PPCInstructionSelector.cpp:86
+
+    if (!RBI.constrainGenericRegister(Reg, PPC::G8RCRegClass, MRI))
+      return false;
----------------
There is an approved version of `selectCopy()` in D132942. We may only need to constrain dest virtual register in the COPY instruction and for the source registers, we can defer them to other uses or defs?


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  https://reviews.llvm.org/D127530/new/

https://reviews.llvm.org/D127530