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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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8
lib/CodeGen/MachineBasicBlock.cpp
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@@ -180,6 +180,14 @@ MachineBasicBlock::instr_iterator MachineBasicBlock::getFirstInstrTerminator() {
return I;
}
MachineBasicBlock::iterator MachineBasicBlock::getFirstNonDebugInstr() {
// Skip over begin-of-block dbg_value instructions.
iterator I = begin(), E = end();
while (I != E && I->isDebugValue())
++I;
return I;
}
MachineBasicBlock::iterator MachineBasicBlock::getLastNonDebugInstr() {
// Skip over end-of-block dbg_value instructions.
instr_iterator B = instr_begin(), I = instr_end();