[PATCH] D30438: SplitKit: Correctly implement partial copies

Mon Feb 27 18:06:36 PST 2017

MatzeB created this revision.
Herald added a subscriber: mcrosier.

- This fixes a bug where subregisters incompatible with the given vreg were choosen.
- Implement the case where multiple copies are necessary to cover a given lanemask.

rdar://30388692

Putting this up for early review as I believe the code to be ready; However I am not sure right now how to write a good test for it. Anyone got tips on how to make a GPU spill/split?

Repository:
  rL LLVM

https://reviews.llvm.org/D30438

Files:
  lib/CodeGen/SplitKit.cpp
  lib/CodeGen/SplitKit.h

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