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restore some code I removed in r85788, refactor it into
a shared place instead of duplicating it 4 times. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85792 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -386,6 +386,20 @@ private:
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if (BBExecutable.count(I.getParent())) // Inst is executable?
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visit(I);
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}
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/// RemoveFromOverdefinedPHIs - If I has any entries in the
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/// UsersOfOverdefinedPHIs map for PN, remove them now.
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void RemoveFromOverdefinedPHIs(Instruction *I, PHINode *PN) {
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if (UsersOfOverdefinedPHIs.empty()) return;
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std::multimap<PHINode*, Instruction*>::iterator It, E;
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tie(It, E) = UsersOfOverdefinedPHIs.equal_range(PN);
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while (It != E) {
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if (It->second == I)
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UsersOfOverdefinedPHIs.erase(It++);
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else
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++It;
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}
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}
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private:
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friend class InstVisitor<SCCPSolver>;
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@ -904,8 +918,8 @@ void SCCPSolver::visitBinaryOperator(Instruction &I) {
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// added ourselves to the UsersOfOverdefinedPHIs list for the PHIs,
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// make sure to clean out any entries that we put there, for
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// efficiency.
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UsersOfOverdefinedPHIs.erase(PN1);
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UsersOfOverdefinedPHIs.erase(PN2);
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RemoveFromOverdefinedPHIs(&I, PN1);
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RemoveFromOverdefinedPHIs(&I, PN2);
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}
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markOverdefined(&I);
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@ -986,8 +1000,8 @@ void SCCPSolver::visitCmpInst(CmpInst &I) {
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// added ourselves to the UsersOfOverdefinedPHIs list for the PHIs,
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// make sure to clean out any entries that we put there, for
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// efficiency.
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UsersOfOverdefinedPHIs.erase(PN1);
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UsersOfOverdefinedPHIs.erase(PN2);
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RemoveFromOverdefinedPHIs(&I, PN1);
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RemoveFromOverdefinedPHIs(&I, PN2);
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}
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markOverdefined(&I);
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