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If the predicated block requires an early exit, end the block there and add a unconditional branch to false block. AnalyzeBranch() does not understand early exits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37430 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -527,7 +527,8 @@ bool IfConverter::IfConvertTriangle(BBInfo &BBI) {
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PredicateBlock(TrueBBI, BBI.BrCond);
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PredicateBlock(TrueBBI, BBI.BrCond);
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// If 'true' block has a 'false' successor, add an exit branch to it.
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// If 'true' block has a 'false' successor, add an exit branch to it.
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if (TrueBBI.FalseBB) {
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bool HasEarlyExit = TrueBBI.FalseBB != NULL;
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if (HasEarlyExit) {
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std::vector<MachineOperand> RevCond(TrueBBI.BrCond);
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std::vector<MachineOperand> RevCond(TrueBBI.BrCond);
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if (TII->ReverseBranchCondition(RevCond))
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if (TII->ReverseBranchCondition(RevCond))
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assert(false && "Unable to reverse branch condition!");
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assert(false && "Unable to reverse branch condition!");
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@ -538,7 +539,7 @@ bool IfConverter::IfConvertTriangle(BBInfo &BBI) {
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// predecessors. Otherwise, add a unconditional branch from 'true' to 'false'.
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// predecessors. Otherwise, add a unconditional branch from 'true' to 'false'.
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BBInfo &FalseBBI = BBAnalysis[BBI.FalseBB->getNumber()];
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BBInfo &FalseBBI = BBAnalysis[BBI.FalseBB->getNumber()];
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bool FalseBBDead = false;
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bool FalseBBDead = false;
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if (FalseBBI.BB->pred_size() == 2) {
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if (!HasEarlyExit && FalseBBI.BB->pred_size() == 2) {
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MergeBlocks(TrueBBI, FalseBBI);
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MergeBlocks(TrueBBI, FalseBBI);
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FalseBBDead = true;
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FalseBBDead = true;
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} else if (!isNextBlock(TrueBBI.BB, FalseBBI.BB))
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} else if (!isNextBlock(TrueBBI.BB, FalseBBI.BB))
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