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Fixed invalid lifetimeStart emission with dynLife vregs

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This commit is contained in:
Brian Fiete 2021-11-05 06:57:16 -07:00
parent fd08367e2b
commit d10951527a
1 changed files with 10 additions and 1 deletions
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11
IDEHelper/Backend/BeMCContext.cpp
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@ -16748,7 +16748,16 @@ void BeMCContext::Generate(BeFunction* function)
auto castedInst = (BeLifetimeEndInst*)inst; auto castedInst = (BeLifetimeEndInst*)inst;
auto mcPtr = GetOperand(castedInst->mPtr, false, true); auto mcPtr = GetOperand(castedInst->mPtr, false, true);
if (mcPtr) if (mcPtr)
AllocInst(BeMCInstKind_LifetimeStart, mcPtr); {
auto vregInfo = GetVRegInfo(mcPtr);
if ((vregInfo != NULL) && (vregInfo->mHasDynLife))
{
// This alloca had an assignment (ie: `mov vregX, [RBP+homeSize0]`) so it must be defined at the mov
// This may indicate incorrectly generated code where we thought an alloca would be in the head but it isn't
}
else
AllocInst(BeMCInstKind_LifetimeStart, mcPtr);
}
} }
break; break;
case BeLifetimeExtendInst::TypeId: case BeLifetimeExtendInst::TypeId: