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Fix FastISel to recognize that the last block in the function does
not have a fall-through successor. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55033 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -104,11 +104,14 @@ FastISel::SelectInstructions(BasicBlock::iterator Begin, BasicBlock::iterator En
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// For now, check for and handle just the most trivial case: an
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// unconditional fall-through branch.
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if (BI->isUnconditional() &&
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next(MachineFunction::iterator(MBB))->getBasicBlock() ==
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BI->getSuccessor(0)) {
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MBB->addSuccessor(next(MachineFunction::iterator(MBB)));
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break;
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if (BI->isUnconditional()) {
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MachineFunction::iterator NextMBB =
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next(MachineFunction::iterator(MBB));
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if (NextMBB != MF->end() &&
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NextMBB->getBasicBlock() == BI->getSuccessor(0)) {
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MBB->addSuccessor(NextMBB);
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break;
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}
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}
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// Something more complicated. Halt "fast" selection and bail.
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