Carl Ritson 74c14202d9 [AMDGPU] Propagate dead flag during pre-RA exec mask optimizations ...

Preserve SCC dead flags in SIOptimizeExecMaskingPreRA.
This helps with removing redundant s_andn2 instructions later.

Reviewed By: rampitec

Differential Revision: https://reviews.llvm.org/D83637

2020-07-14 12:53:43 +09:00

5.0 KiB

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