2 Commits

Author	SHA1	Message	Date
Carl Ritson	c16f776028	[AMDGPU] Move kill lowering to WQM pass and add live mask tracking ... Move implementation of kill intrinsics to WQM pass. Add live lane tracking by updating a stored exec mask when lanes are killed. Use live lane tracking to enable early termination of shader at any point in control flow. Reviewed By: piotr Differential Revision: https://reviews.llvm.org/D94746	2021-02-11 20:31:29 +09:00
Carl Ritson	790c75c163	[AMDGPU] Add SI_EARLY_TERMINATE_SCC0 for early terminating shader ... Add pseudo instruction to allow early termination of pixel shader anywhere based on the value of SCC. The intention is to use this when a mask of live lanes is updated, e.g. live lanes in WQM pass. This facilitates early termination of shaders even when EXEC is incomplete, e.g. in non-uniform control flow. Reviewed By: foad Differential Revision: https://reviews.llvm.org/D88777	2021-01-13 13:29:05 +09:00