[PATCH] D34189: AMDGPU: Avoid saving/restoring reserved m0 register
Tom Stellard via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Jun 13 18:26:41 PDT 2017
tstellar added a comment.
> This changes the code to assume that m0 is available since it is
> reserved so we shouldn't have any longer liveranges crossing potential
> spill/reload places.
m0 could potentially be live for the whole program, so this assumption is not correct.
Repository:
rL LLVM
https://reviews.llvm.org/D34189
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