[PATCH] D98888: [AMDGPU] SIOptimizeExecMaskingPreRA should check constant bus constraint when folds EXEC copy
Matt Arsenault via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Mar 19 12:48:58 PDT 2021
arsenm added inline comments.
================
Comment at: llvm/test/CodeGen/AMDGPU/opt_exec_copy_fold.mir:16
+ %2:vreg_64 = COPY $exec
+ %3:sreg_64 = V_CMP_EQ_U64_e64 %1, %2, implicit $exec
+ $scc = COPY %3
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Is exec + implicit exec + other SGPR really a constant bus violation?
Repository:
rG LLVM Github Monorepo
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https://reviews.llvm.org/D98888/new/
https://reviews.llvm.org/D98888
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