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[AMDGPU] Update VMEM scalar write hazard mitigation sequence

Authored by critson on Jul 15 2020, 7:07 PM.

Description

[AMDGPU] Update VMEM scalar write hazard mitigation sequence

Using s_waitcnt_depctr 0xffe3 is potentially faster than v_nop.

Reviewed By: rampitec, foad

Differential Revision: https://reviews.llvm.org/D83872

Details

Committed
critsonJul 15 2020, 7:37 PM
Reviewer
rampitec
Differential Revision
D83872: [AMDGPU] Update VMEM scalar write hazard mitigation sequence
Parents
rGfd802cc4dea4: [libunwind] Fix getSLEB128 on large values
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