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[MachineBasicBlock] Add getFirstNonDebugInstr to complement getLastNonDebugInstr

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Use it in CodeGen where applicable. No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240414 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2015-06-23 14:47:29 +00:00
parent d18bb88b2e
commit 336ead08bd
5 changed files with 37 additions and 70 deletions
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10
lib/CodeGen/IfConversion.cpp
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@@ -1355,15 +1355,9 @@ bool IfConverter::IfConvertDiamond(BBInfo &BBI, IfcvtKind Kind,
Redefs.addLiveIns(BBI1->BB);
// Remove the duplicated instructions at the beginnings of both paths.
MachineBasicBlock::iterator DI1 = BBI1->BB->begin();
MachineBasicBlock::iterator DI2 = BBI2->BB->begin();
MachineBasicBlock::iterator DIE1 = BBI1->BB->end();
MachineBasicBlock::iterator DIE2 = BBI2->BB->end();
// Skip dbg_value instructions
while (DI1 != DIE1 && DI1->isDebugValue())
++DI1;
while (DI2 != DIE2 && DI2->isDebugValue())
++DI2;
MachineBasicBlock::iterator DI1 = BBI1->BB->getFirstNonDebugInstr();
MachineBasicBlock::iterator DI2 = BBI2->BB->getFirstNonDebugInstr();
BBI1->NonPredSize -= NumDups1;
BBI2->NonPredSize -= NumDups1;