Merging r268287:
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r268287 | thomas.stellard | 2016-05-02 12:37:56 -0700 (Mon, 02 May 2016) | 19 lines
AMDGPU/SI: Set the kill flag on temp VGPRs used to restore SGPRs from scratch
Summary:
When we restore an SGPR value from scratch, we first load it into a
temporary VGPR and then use v_readlane_b32 to copy the value from the
VGPR back into an SGPR.
We weren't setting the kill flag on the VGPR in the v_readlane_b32
instruction, so the register scavenger wasn't able to re-use this
temp value later.
I wasn't able to create a lit test for this.
Reviewers: arsenm
Subscribers: arsenm, llvm-commits
Differential Revision: http://reviews.llvm.org/D19744
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llvm-svn: 271770
