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| author | Chris Lattner <sabre@nondot.org> | 2004-06-08 21:50:30 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-06-08 21:50:30 +0000 |
| commit | 47c31a824803b6fffcf9818dccbbe040c366c5ab (patch) | |
| tree | c758539f0e6d247fe0484f804f77b17e2b41e63d /lib/Analysis/LoopInfo.cpp | |
| parent | 8e6e7c90ce5ecefb78637491ba40bf98c3ca1b67 (diff) | |
| download | external_llvm-47c31a824803b6fffcf9818dccbbe040c366c5ab.zip external_llvm-47c31a824803b6fffcf9818dccbbe040c366c5ab.tar.gz external_llvm-47c31a824803b6fffcf9818dccbbe040c366c5ab.tar.bz2 | |
Don't grab the condition of unconditional branches!
This fixes PR363
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14076 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/LoopInfo.cpp')
| -rw-r--r-- | lib/Analysis/LoopInfo.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp index c4b2bf6..8619984 100644 --- a/lib/Analysis/LoopInfo.cpp +++ b/lib/Analysis/LoopInfo.cpp @@ -442,14 +442,15 @@ Value *Loop::getTripCount() const { IV->getIncomingBlock(contains(IV->getIncomingBlock(1))); if (BranchInst *BI = dyn_cast<BranchInst>(BackedgeBlock->getTerminator())) - if (SetCondInst *SCI = dyn_cast<SetCondInst>(BI->getCondition())) - if (SCI->getOperand(0) == Inc) - if (BI->getSuccessor(0) == getHeader()) { - if (SCI->getOpcode() == Instruction::SetNE) + if (BI->isConditional()) + if (SetCondInst *SCI = dyn_cast<SetCondInst>(BI->getCondition())) + if (SCI->getOperand(0) == Inc) + if (BI->getSuccessor(0) == getHeader()) { + if (SCI->getOpcode() == Instruction::SetNE) + return SCI->getOperand(1); + } else if (SCI->getOpcode() == Instruction::SetEQ) { return SCI->getOperand(1); - } else if (SCI->getOpcode() == Instruction::SetEQ) { - return SCI->getOperand(1); - } + } return 0; } |