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Provide hooks for spilling / restoring stuff

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75969 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2009-07-16 14:01:27 +00:00
parent 4cc7ce0c01
commit 4b730160bb
1 changed files with 30 additions and 2 deletions
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32
lib/Target/SystemZ/SystemZInstrInfo.cpp
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@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "SystemZ.h"
#include "SystemZInstrBuilder.h"
#include "SystemZInstrInfo.h"
#include "SystemZMachineFunctionInfo.h"
#include "SystemZTargetMachine.h"
@ -55,14 +56,41 @@ void SystemZInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, bool isKill, int FrameIdx,
const TargetRegisterClass *RC) const {
assert(0 && "Cannot store this register to stack slot!");
DebugLoc DL = DebugLoc::getUnknownLoc();
if (MI != MBB.end()) DL = MI->getDebugLoc();
unsigned Opc = 0;
if (RC == &SystemZ::GR32RegClass ||
RC == &SystemZ::ADDR32RegClass)
Opc = SystemZ::MOV32mr;
else if (RC == &SystemZ::GR64RegClass ||
RC == &SystemZ::ADDR64RegClass) {
Opc = SystemZ::MOV64mr;
} else
assert(0 && "Unsupported regclass to store");
addFrameReference(BuildMI(MBB, MI, DL, get(Opc)), FrameIdx)
.addReg(SrcReg, getKillRegState(isKill));
}
void SystemZInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIdx,
const TargetRegisterClass *RC) const{
assert(0 && "Cannot store this register to stack slot!");
DebugLoc DL = DebugLoc::getUnknownLoc();
if (MI != MBB.end()) DL = MI->getDebugLoc();
unsigned Opc = 0;
if (RC == &SystemZ::GR32RegClass ||
RC == &SystemZ::ADDR32RegClass)
Opc = SystemZ::MOV32rm;
else if (RC == &SystemZ::GR64RegClass ||
RC == &SystemZ::ADDR64RegClass) {
Opc = SystemZ::MOV64rm;
} else
assert(0 && "Unsupported regclass to store");
addFrameReference(BuildMI(MBB, MI, DL, get(Opc), DestReg), FrameIdx);
}
bool SystemZInstrInfo::copyRegToReg(MachineBasicBlock &MBB,