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Use MCPhysReg for RegisterClassInfo allocation orders.

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This saves a bit of memory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168852 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-11-29 03:34:17 +00:00
parent e26e8a64ab
commit 39b5c0c049
7 changed files with 20 additions and 18 deletions
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lib/CodeGen/RegAllocFast.cpp
+3 -3
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@@ -527,10 +527,10 @@ RAFast::LiveRegMap::iterator RAFast::allocVirtReg(MachineInstr *MI,
}
}
ArrayRef<unsigned> AO = RegClassInfo.getOrder(RC);
ArrayRef<MCPhysReg> AO = RegClassInfo.getOrder(RC);
// First try to find a completely free register.
for (ArrayRef<unsigned>::iterator I = AO.begin(), E = AO.end(); I != E; ++I) {
for (ArrayRef<MCPhysReg>::iterator I = AO.begin(), E = AO.end(); I != E; ++I){
unsigned PhysReg = *I;
if (PhysRegState[PhysReg] == regFree && !UsedInInstr.count(PhysReg)) {
assignVirtToPhysReg(*LRI, PhysReg);
@@ -542,7 +542,7 @@ RAFast::LiveRegMap::iterator RAFast::allocVirtReg(MachineInstr *MI,
<< RC->getName() << "\n");
unsigned BestReg = 0, BestCost = spillImpossible;
for (ArrayRef<unsigned>::iterator I = AO.begin(), E = AO.end(); I != E; ++I) {
for (ArrayRef<MCPhysReg>::iterator I = AO.begin(), E = AO.end(); I != E; ++I){
unsigned Cost = calcSpillCost(*I);
DEBUG(dbgs() << "\tRegister: " << PrintReg(*I, TRI) << "\n");
DEBUG(dbgs() << "\tCost: " << Cost << "\n");