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//===- MRegisterInfo.cpp - Target Register Information Implementation -----===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the MRegisterInfo interface.
//
//===----------------------------------------------------------------------===//
#include "llvm/Target/MRegisterInfo.h"
MRegisterInfo::MRegisterInfo(const MRegisterDesc *D, unsigned NR,
regclass_iterator RCB, regclass_iterator RCE,
int CFSO, int CFDO)
: Desc(D), NumRegs(NR), RegClassBegin(RCB), RegClassEnd(RCE) {
assert(NumRegs < FirstVirtualRegister &&
"Target has too many physical registers!");
PhysRegClasses = new const TargetRegisterClass*[NumRegs];
for (unsigned i = 0; i != NumRegs; ++i)
PhysRegClasses[i] = 0;
// Fill in the PhysRegClasses map
for (MRegisterInfo::regclass_iterator I = regclass_begin(),
E = regclass_end(); I != E; ++I)
for (unsigned i = 0, e = (*I)->getNumRegs(); i != e; ++i) {
unsigned Reg = (*I)->getRegister(i);
assert(PhysRegClasses[Reg] == 0 && "Register in more than one class?");
PhysRegClasses[Reg] = *I;
}
CallFrameSetupOpcode = CFSO;
CallFrameDestroyOpcode = CFDO;
}
MRegisterInfo::~MRegisterInfo() {
delete[] PhysRegClasses;
}
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