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MachineBasicBlock: Add liveins() method returning an iterator_range

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@245895 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun
2015-08-24 22:59:52 +00:00
parent b7e01a085a
commit 56dd2d0886
20 changed files with 65 additions and 91 deletions
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lib/CodeGen/LiveVariables.cpp
+6 -9
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@@ -559,11 +559,10 @@ void LiveVariables::runOnInstr(MachineInstr *MI,
void LiveVariables::runOnBlock(MachineBasicBlock *MBB, const unsigned NumRegs) {
// Mark live-in registers as live-in.
SmallVector<unsigned, 4> Defs;
for (MachineBasicBlock::livein_iterator II = MBB->livein_begin(),
EE = MBB->livein_end(); II != EE; ++II) {
assert(TargetRegisterInfo::isPhysicalRegister(*II) &&
for (unsigned LI : MBB->liveins()) {
assert(TargetRegisterInfo::isPhysicalRegister(LI) &&
"Cannot have a live-in virtual register!");
HandlePhysRegDef(*II, nullptr, Defs);
HandlePhysRegDef(LI, nullptr, Defs);
}
// Loop over all of the instructions, processing them.
@@ -601,12 +600,10 @@ void LiveVariables::runOnBlock(MachineBasicBlock *MBB, const unsigned NumRegs) {
MachineBasicBlock *SuccMBB = *SI;
if (SuccMBB->isLandingPad())
continue;
for (MachineBasicBlock::livein_iterator LI = SuccMBB->livein_begin(),
LE = SuccMBB->livein_end(); LI != LE; ++LI) {
unsigned LReg = *LI;
if (!TRI->isInAllocatableClass(LReg))
for (unsigned LI : SuccMBB->liveins()) {
if (!TRI->isInAllocatableClass(LI))
// Ignore other live-ins, e.g. those that are live into landing pads.
LiveOuts.insert(LReg);
LiveOuts.insert(LI);
}
}