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[Unroll] Don't analyze blocks outside the loop.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243466 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Zolotukhin
2015-07-28 19:21:21 +00:00
parent 03b49c843a
commit 8ae1a0f789
1 changed files with 8 additions and 4 deletions
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lib/Transforms/Scalar/LoopUnrollPass.cpp
+8 -4
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@@ -586,16 +586,20 @@ analyzeLoopUnrollCost(const Loop *L, unsigned TripCount, ScalarEvolution &SE,
if (BI->isConditional()) {
if (Constant *SimpleCond =
SimplifiedValues.lookup(BI->getCondition())) {
BBWorklist.insert(BI->getSuccessor(
cast<ConstantInt>(SimpleCond)->isZero() ? 1 : 0));
BasicBlock *Succ = BI->getSuccessor(
cast<ConstantInt>(SimpleCond)->isZero() ? 1 : 0);
if (L->contains(Succ))
BBWorklist.insert(Succ);
continue;
}
}
} else if (SwitchInst *SI = dyn_cast<SwitchInst>(TI)) {
if (Constant *SimpleCond =
SimplifiedValues.lookup(SI->getCondition())) {
BBWorklist.insert(
SI->getSuccessor(cast<ConstantInt>(SimpleCond)->getSExtValue()));
BasicBlock *Succ =
SI->getSuccessor(cast<ConstantInt>(SimpleCond)->getSExtValue());
if (L->contains(Succ))
BBWorklist.insert(Succ);
continue;
}
}