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EscapeAnalysis: remove unused cast handling from the main loop.

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AnalyzeInstruction no longer needs to handle all these casts.
getPointerBase does it now.
This commit is contained in:
Andrew Trick
2019-11-06 11:08:21 -08:00
parent f009cf3de8
commit cb1e787f50
2 changed files with 1 additions and 23 deletions
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22
lib/SILOptimizer/Analysis/EscapeAnalysis.cpp
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@@ -1837,28 +1837,6 @@ void EscapeAnalysis::analyzeInstruction(SILInstruction *I,
ConGraph->setNode(TEI, ArrayElements);
return;
}
case SILInstructionKind::UncheckedRefCastInst:
case SILInstructionKind::ConvertFunctionInst:
case SILInstructionKind::UpcastInst:
case SILInstructionKind::InitExistentialRefInst:
case SILInstructionKind::OpenExistentialRefInst:
case SILInstructionKind::RawPointerToRefInst:
case SILInstructionKind::RefToRawPointerInst:
case SILInstructionKind::RefToBridgeObjectInst:
case SILInstructionKind::BridgeObjectToRefInst:
case SILInstructionKind::UncheckedAddrCastInst:
case SILInstructionKind::UnconditionalCheckedCastInst:
// DO NOT use LOADABLE_REF_STORAGE because unchecked references don't have
// retain/release instructions that trigger the 'default' case.
#define ALWAYS_OR_SOMETIMES_LOADABLE_CHECKED_REF_STORAGE(Name, ...) \
case SILInstructionKind::RefTo##Name##Inst: \
case SILInstructionKind::Name##ToRefInst:
#include "swift/AST/ReferenceStorage.def"
// A cast is almost like a projection.
if (CGNode *OpNode = ConGraph->getNode(I->getOperand(0))) {
ConGraph->setNode(cast<SingleValueInstruction>(I), OpNode);
}
break;
case SILInstructionKind::UncheckedRefCastAddrInst: {
auto *URCAI = cast<UncheckedRefCastAddrInst>(I);
CGNode *SrcNode = ConGraph->getNode(URCAI->getSrc());