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Localize a map, remove another

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llvm-svn: 5060
This commit is contained in:
Chris Lattner 2002-12-15 21:24:30 +00:00
parent ea2d8ad746
commit 35ceaa7322
1 changed files with 3 additions and 9 deletions
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12
lib/CodeGen/RegAllocSimple.cpp
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@ -49,15 +49,9 @@ namespace {
// Maps SSA Regs => offsets on the stack where these values are stored
std::map<unsigned, unsigned> VirtReg2OffsetMap;
// Maps SSA Regs => physical regs
std::map<unsigned, unsigned> SSA2PhysRegMap;
// Maps physical register to their register classes
PhysRegClassMap PhysRegClasses;
// Made to combat the incorrect allocation of r2 = add r1, r1
std::map<unsigned, unsigned> VirtReg2PhysRegMap;
// RegsUsed - Keep track of what registers are currently in use.
std::set<unsigned> RegsUsed;
@ -134,7 +128,6 @@ namespace {
void cleanupAfterFunction() {
VirtReg2OffsetMap.clear();
SSA2PhysRegMap.clear();
NumBytesAllocated = 4; // FIXME: This is X86 specific
}
@ -357,6 +350,9 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) {
//loop over each basic block
for (MachineBasicBlock::iterator I = MBB.begin(); I != MBB.end(); ++I) {
// Made to combat the incorrect allocation of r2 = add r1, r1
std::map<unsigned, unsigned> VirtReg2PhysRegMap;
MachineInstr *MI = *I;
// a preliminary pass that will invalidate any registers that
@ -406,9 +402,7 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) {
", phys: " << op.getAllocatedRegNum() << "\n");
}
}
clearAllRegs();
VirtReg2PhysRegMap.clear();
}
}