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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37328 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-05-25 00:59:01 +00:00
parent d1d25174cd
commit 4bec8ae694
1 changed files with 9 additions and 9 deletions

18
lib/CodeGen/IfConversion.cpp

@ -173,17 +173,17 @@ void IfConverter::StructuralAnalysis(MachineBasicBlock *BB) {
return; // Already analyzed.
BBI.BB = BB;
BBI.NonPredSize = std::distance(BB->begin(), BB->end());
// Look for 'root' of a simple (non-nested) triangle or diamond.
BBI.Kind = ICNotClassfied;
bool CanAnalyze = !TII->AnalyzeBranch(*BB, BBI.TrueBB, BBI.FalseBB,
BBI.BrCond);
// Does it end with a return, indirect jump, or jumptable branch?
BBI.hasEarlyExit = TII->BlockHasNoFallThrough(*BB) && !BBI.TrueBB;
if (!CanAnalyze || !BBI.TrueBB || BBI.BrCond.size() == 0)
return;
}
// Look for 'root' of a simple (non-nested) triangle or diamond.
BBI.Kind = ICNotClassfied;
bool CanAnalyze = !TII->AnalyzeBranch(*BB, BBI.TrueBB, BBI.FalseBB,
BBI.BrCond);
// Does it end with a return, indirect jump, or jumptable branch?
BBI.hasEarlyExit = TII->BlockHasNoFallThrough(*BB) && !BBI.TrueBB;
if (!CanAnalyze || !BBI.TrueBB || BBI.BrCond.size() == 0)
return;
// Not a candidate if 'true' block is going to be if-converted.
StructuralAnalysis(BBI.TrueBB);
BBInfo &TrueBBI = BBAnalysis[BBI.TrueBB->getNumber()];