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Make SimpleSpiller respect subregister indices. 

llvm-svn: 54968
This commit is contained in:
Owen Anderson 2008-08-19 01:05:33 +00:00
parent 5caafe598f
commit 7f3bfbd23b
1 changed files with 5 additions and 2 deletions
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7
llvm/lib/CodeGen/VirtRegMap.cpp
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@ -241,6 +241,7 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM) {
DOUT << "********** Function: " << MF.getFunction()->getName() << '\n';
const TargetMachine &TM = MF.getTarget();
const TargetInstrInfo &TII = *TM.getInstrInfo();
const TargetRegisterInfo &TRI = *TM.getRegisterInfo();
// LoadedRegs - Keep track of which vregs are loaded, so that we only load
@ -261,7 +262,9 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM) {
if (MO.isRegister() && MO.getReg()) {
if (TargetRegisterInfo::isVirtualRegister(MO.getReg())) {
unsigned VirtReg = MO.getReg();
unsigned SubIdx = MO.getSubReg();
unsigned PhysReg = VRM.getPhys(VirtReg);
unsigned RReg = SubIdx ? TRI.getSubReg(PhysReg, SubIdx) : PhysReg;
if (!VRM.isAssignedReg(VirtReg)) {
int StackSlot = VRM.getStackSlot(VirtReg);
const TargetRegisterClass* RC =
@ -286,8 +289,8 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction &MF, VirtRegMap &VRM) {
++NumStores;
}
}
MF.getRegInfo().setPhysRegUsed(PhysReg);
MI.getOperand(i).setReg(PhysReg);
MF.getRegInfo().setPhysRegUsed(RReg);
MI.getOperand(i).setReg(RReg);
} else {
MF.getRegInfo().setPhysRegUsed(MO.getReg());
}