Carl Ritson 1f52d02ceb [AMDGPU] Split waterfall loop exec manipulation ...

Split waterfall loops into multiple blocks so that exec mask
manipulation (s_and_saveexec) does not occur in the middle of
a block.

VGPR live range optimizer is updated to handle waterfall loops
spanning multiple blocks.

Reviewed By: ruiling

Differential Revision: https://reviews.llvm.org/D122200

2022-03-28 17:44:54 +09:00

30 KiB

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