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Fix some stupid bugs that have effectively disabled if-conversion.

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llvm-svn: 37575
This commit is contained in:
Evan Cheng 2007-06-14 20:28:52 +00:00
parent 74c92798d8
commit a2c2479e22
1 changed files with 7 additions and 1 deletions
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8
lib/CodeGen/IfConversion.cpp
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@ -208,6 +208,7 @@ bool IfConverter::runOnMachineFunction(MachineFunction &MF) {
// marked dead (due to it being predicated), then skip it.
if (!BBI.IsEnqueued || BBI.IsDone)
continue;
BBI.IsEnqueued = false;
bool RetVal = false;
switch (BBI.Kind) {
@ -625,6 +626,7 @@ bool IfConverter::AnalyzeBlocks(MachineFunction &MF,
case ICTriangleFalse:
case ICTriangleFRev:
case ICDiamond:
BBI.IsEnqueued = true;
Candidates.push_back(&BBI);
break;
default:
@ -660,7 +662,7 @@ void IfConverter::ReTryPreds(MachineBasicBlock *BB) {
E = BB->pred_end(); PI != E; ++PI) {
BBInfo &PBBI = BBAnalysis[(*PI)->getNumber()];
if (!PBBI.IsDone && PBBI.Kind == ICNotClassfied) {
assert(PBBI.IsEnqueued && "Unexpected");
assert(!PBBI.IsEnqueued && "Unexpected");
PBBI.IsAnalyzed = false;
}
}
@ -963,6 +965,7 @@ void IfConverter::PredicateBlock(BBInfo &BBI,
}
}
BBI.IsAnalyzed = false;
BBI.NonPredSize = 0;
std::copy(Cond.begin(), Cond.end(), std::back_inserter(BBI.Predicate));
@ -1013,4 +1016,7 @@ void IfConverter::MergeBlocks(BBInfo &ToBBI, BBInfo &FromBBI) {
std::copy(FromBBI.Predicate.begin(), FromBBI.Predicate.end(),
std::back_inserter(ToBBI.Predicate));
FromBBI.Predicate.clear();
ToBBI.IsAnalyzed = false;
FromBBI.IsAnalyzed = false;
}