Change MachineBasicBlock's vector of MachineInstr pointers into an
ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.
llvm-svn: 11340
diff --git a/llvm/lib/CodeGen/LiveVariables.cpp b/llvm/lib/CodeGen/LiveVariables.cpp
index fcc78c0..420cb44 100644
--- a/llvm/lib/CodeGen/LiveVariables.cpp
+++ b/llvm/lib/CodeGen/LiveVariables.cpp
@@ -213,7 +213,7 @@
// Loop over all of the instructions, processing them.
for (MachineBasicBlock::iterator I = MBB->begin(), E = MBB->end();
I != E; ++I) {
- MachineInstr *MI = *I;
+ MachineInstr *MI = I;
const TargetInstrDescriptor &MID = TII.get(MI->getOpcode());
// Process all of the operands of the instruction...
@@ -275,9 +275,8 @@
MachineBasicBlock *Succ = BBMap.find(*SI)->second.first;
// PHI nodes are guaranteed to be at the top of the block...
- for (MachineBasicBlock::iterator I = Succ->begin(), E = Succ->end();
- I != E && (*I)->getOpcode() == TargetInstrInfo::PHI; ++I) {
- MachineInstr *MI = *I;
+ for (MachineBasicBlock::iterator MI = Succ->begin(), ME = Succ->end();
+ MI != ME && MI->getOpcode() == TargetInstrInfo::PHI; ++MI) {
for (unsigned i = 1; ; i += 2)
if (MI->getOperand(i+1).getMachineBasicBlock() == MBB) {
MachineOperand &MO = MI->getOperand(i);