Merging r268295:
------------------------------------------------------------------------
r268295 | thomas.stellard | 2016-05-02 13:11:44 -0700 (Mon, 02 May 2016) | 7 lines
AMDGPU/SI: Use v_readfirstlane_b32 when restoring SGPRs spilled to
scratch
We were using v_readlane_b32 with the lane set to zero, but this won't
work if thread 0 is not active.
Differential Revision: http://reviews.llvm.org/D19745
------------------------------------------------------------------------
llvm-svn: 271771
