Comment # 11
on bug 98761
from Marek Olšák
First bad commit: commit 4404d0d6e354e80dd7f8f0a0e12d8ad809cf007e Author: Matt Arsenault <Matthew.Arsenault@amd.com> Date: Sun Nov 13 18:20:54 2016 +0000 AMDGPU: Implement SGPR spilling with scalar stores nThis avoids the nasty problems caused by using memory instructions that read the exec mask while spilling / restoring registers used for control flow masking, but only for VI when these were added. This always uses the scalar stores when enabled currently, but it may be better to still try to spill to a VGPR and use this on the fallback memory path. The cache also needs to be flushed before wave termination if a scalar store is used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286766 91177308-0d34-0410-b5e6-96231b3b80d8
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