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No really, clear predcessors states.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37581 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-06-14 23:34:09 +00:00
parent e37e24331c
commit bc198eeba6
1 changed files with 8 additions and 7 deletions
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11
lib/CodeGen/IfConversion.cpp
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@ -662,12 +662,10 @@ void IfConverter::ReTryPreds(MachineBasicBlock *BB) {
for (MachineBasicBlock::pred_iterator PI = BB->pred_begin(),
E = BB->pred_end(); PI != E; ++PI) {
BBInfo &PBBI = BBAnalysis[(*PI)->getNumber()];
if (PBBI.IsDone)
if (PBBI.IsDone || PBBI.BB == BB)
continue;
if (PBBI.Kind == ICNotClassfied) {
assert(!PBBI.IsEnqueued && "Unexpected");
PBBI.Kind = ICNotClassfied;
PBBI.IsAnalyzed = false;
} else if (PBBI.IsEnqueued && PBBI.BB != BB)
PBBI.IsEnqueued = false;
}
}
@ -769,10 +767,13 @@ bool IfConverter::IfConvertTriangle(BBInfo &BBI) {
if (PBB == BBI.BB)
continue;
BBInfo &PBBI = BBAnalysis[PBB->getNumber()];
if (PBBI.IsEnqueued)
if (PBBI.IsEnqueued) {
PBBI.Kind = ICNotClassfied;
PBBI.IsAnalyzed = false;
PBBI.IsEnqueued = false;
}
}
}
// Predicate the 'true' block after removing its branch.
CvtBBI->NonPredSize -= TII->RemoveBranch(*CvtBBI->BB);