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bcheng0127
2022-09-20 01:16:05 +00:00
committed by igcbot
parent 052c0d4854
commit a9f50f0110
1 changed files with 3 additions and 3 deletions
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6
visa/G4_IR.cpp
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@ -1778,9 +1778,9 @@ G4_INST::MovType G4_INST::canPropagate() const
} }
} }
// Do not propagate through copy of `acc0` if its execution size does not match the native size, // Do not propagate through copy of `acc0', acc substitutuion rely on the mov instruction for implicit acc
// as some latest passes (e.g., fixAddCSubb) rely on the acc0 copy move for correctness // FXIME: local data flow analysis cannot analyze the acc regsiter def_use chain accurately.
if (src->isAccReg() && getExecSize() != builder.getNativeExecSize()) if (src->isAccReg())
{ {
return SuperMov; return SuperMov;
} }