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Remove unused savePhysRegToStack method 

llvm-svn: 5061
This commit is contained in:
Chris Lattner 2002-12-15 21:33:51 +00:00
parent ed594b6b20
commit 2af545d034
1 changed files with 4 additions and 28 deletions
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32
llvm/lib/CodeGen/RegAllocSimple.cpp
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@ -142,10 +142,6 @@ namespace {
saveVirtRegToStack (MachineBasicBlock &MBB, saveVirtRegToStack (MachineBasicBlock &MBB,
MachineBasicBlock::iterator I, unsigned VirtReg, MachineBasicBlock::iterator I, unsigned VirtReg,
unsigned PhysReg); unsigned PhysReg);
MachineBasicBlock::iterator
savePhysRegToStack (MachineBasicBlock &MBB,
MachineBasicBlock::iterator I, unsigned PhysReg);
}; };
} }
@ -199,8 +195,6 @@ RegAllocSimple::moveUseToReg (MachineBasicBlock &MBB,
unsigned VirtReg, unsigned &PhysReg) unsigned VirtReg, unsigned &PhysReg)
{ {
const TargetRegisterClass* regClass = MF->getRegClass(VirtReg); const TargetRegisterClass* regClass = MF->getRegClass(VirtReg);
assert(regClass);
unsigned stackOffset = allocateStackSpaceFor(VirtReg, regClass); unsigned stackOffset = allocateStackSpaceFor(VirtReg, regClass);
PhysReg = getFreeReg(VirtReg); PhysReg = getFreeReg(VirtReg);
@ -217,8 +211,6 @@ RegAllocSimple::saveVirtRegToStack (MachineBasicBlock &MBB,
unsigned VirtReg, unsigned PhysReg) unsigned VirtReg, unsigned PhysReg)
{ {
const TargetRegisterClass* regClass = MF->getRegClass(VirtReg); const TargetRegisterClass* regClass = MF->getRegClass(VirtReg);
assert(regClass);
unsigned stackOffset = allocateStackSpaceFor(VirtReg, regClass); unsigned stackOffset = allocateStackSpaceFor(VirtReg, regClass);
// Add move instruction(s) // Add move instruction(s)
@ -228,22 +220,6 @@ RegAllocSimple::saveVirtRegToStack (MachineBasicBlock &MBB,
-stackOffset, regClass->getDataSize()); -stackOffset, regClass->getDataSize());
} }
MachineBasicBlock::iterator
RegAllocSimple::savePhysRegToStack (MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned PhysReg)
{
const TargetRegisterClass* regClass = MF->getRegClass(PhysReg);
assert(regClass);
unsigned offset = allocateStackSpaceFor(PhysReg, regClass);
// Add move instruction(s)
++NumSpilled;
return RegInfo->storeReg2RegOffset(MBB, I, PhysReg,
RegInfo->getFramePointer(),
offset, regClass->getDataSize());
}
/// EliminatePHINodes - Eliminate phi nodes by inserting copy instructions in /// EliminatePHINodes - Eliminate phi nodes by inserting copy instructions in
/// predecessor basic blocks. /// predecessor basic blocks.
@ -322,16 +298,16 @@ void RegAllocSimple::EliminatePHINodes(MachineBasicBlock &MBB) {
opI = RegInfo->moveImm2Reg(opBlock, opI, physReg, opI = RegInfo->moveImm2Reg(opBlock, opI, physReg,
(unsigned) opVal.getImmedValue(), (unsigned) opVal.getImmedValue(),
dataSize); dataSize);
saveVirtRegToStack(opBlock, opI, virtualReg, physReg);
} else { } else {
// Allocate a physical register and add a move in the BB // Allocate a physical register and add a move in the BB
unsigned opVirtualReg = opVal.getAllocatedRegNum(); unsigned opVirtualReg = opVal.getAllocatedRegNum();
unsigned opPhysReg; unsigned opPhysReg;
opI = moveUseToReg(opBlock, opI, opVirtualReg, physReg); opI = moveUseToReg(opBlock, opI, opVirtualReg, physReg);
// Save that register value to the stack of the TARGET REG
saveVirtRegToStack(opBlock, opI, virtualReg, physReg);
} }
// Save that register value to the stack of the TARGET REG
saveVirtRegToStack(opBlock, opI, virtualReg, physReg);
} }
// make regs available to other instructions // make regs available to other instructions
@ -348,7 +324,7 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) {
// Handle PHI instructions specially: add moves to each pred block // Handle PHI instructions specially: add moves to each pred block
EliminatePHINodes(MBB); EliminatePHINodes(MBB);
//loop over each basic block // loop over each instruction
for (MachineBasicBlock::iterator I = MBB.begin(); I != MBB.end(); ++I) { for (MachineBasicBlock::iterator I = MBB.begin(); I != MBB.end(); ++I) {
// Made to combat the incorrect allocation of r2 = add r1, r1 // Made to combat the incorrect allocation of r2 = add r1, r1
std::map<unsigned, unsigned> VirtReg2PhysRegMap; std::map<unsigned, unsigned> VirtReg2PhysRegMap;