#include "SparcV8RegisterInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/Type.h"
#include "Support/STLExtras.h"
using namespace llvm;
unsigned SrcReg, int FrameIdx,
const TargetRegisterClass *RC) const
{
- abort();
- return -1;
+ assert (RC == SparcV8::IntRegsRegisterClass
+ && "Can only store 32-bit values to stack slots");
+ MachineInstr *I =
+ BuildMI (V8::STrm, 2).addFrameIndex (FrameIdx).addReg (SrcReg);
+ MBB.insert(MBBI, I);
+ return 1;
}
int SparcV8RegisterInfo::loadRegFromStackSlot(
unsigned DestReg, int FrameIdx,
const TargetRegisterClass *RC) const
{
- abort();
- return -1;
+ assert (RC == SparcV8::IntRegsRegisterClass
+ && "Can only load 32-bit registers from stack slots");
+ MachineInstr *I =
+ BuildMI (V8::LDmr, 2).addReg (DestReg).addFrameIndex (FrameIdx);
+ MBB.insert(MBBI, I);
+ return 1;
}
int SparcV8RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const {
- abort();
+ assert (RC == SparcV8::IntRegsRegisterClass
+ && "Can only copy 32-bit registers");
+ MBB.insert (MBBI,
+ BuildMI (V8::ORrr, 3, DestReg).addReg (V8::G0).addReg (SrcReg));
return -1;
}
void SparcV8RegisterInfo::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
+ std::cerr
+ << "Sorry, I don't know how to eliminate call frame pseudo instrs yet, in\n"
+ << __FUNCTION__ << " at " << __FILE__ << ":" << __LINE__ << "\n";
abort();
}
void
SparcV8RegisterInfo::eliminateFrameIndex(MachineFunction &MF,
MachineBasicBlock::iterator II) const {
+ unsigned i = 0;
+ MachineInstr &MI = *II;
+ while (!MI.getOperand(i).isFrameIndex()) {
+ ++i;
+ assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
+ }
+
+ int FrameIndex = MI.getOperand(i).getFrameIndex();
+
+ std::cerr
+ << "Sorry, I don't know how to eliminate frame indices yet\n"
+ << "Frame index was " << FrameIndex << ", in\n"
+ << __FUNCTION__ << "() at " << __FILE__ << ":" << __LINE__ << "\n";
abort();
}
void SparcV8RegisterInfo::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front();
+ MachineFrameInfo *MFI = MF.getFrameInfo();
- // Eventually this should emit the correct save instruction based on the
- // number of bytes in the frame. For now we just hardcode it.
- BuildMI(MBB, MBB.begin(), V8::SAVEri, 2, V8::SP).addImm(-112).addReg(V8::SP);
+ // Get the number of bytes to allocate from the FrameInfo
+ int NumBytes = (int) MFI->getStackSize();
+
+ // Emit the correct save instruction based on the number of bytes in the frame.
+ // Minimum stack frame size according to V8 ABI is:
+ // 16 words for register window spill
+ // 1 word for address of returned aggregate-value
+ // + 6 words for passing parameters on the stack
+ // ----------
+ // 23 words * 4 bytes per word = 92 bytes
+ NumBytes += 92;
+ NumBytes = (NumBytes + 3) & ~3; // Round up to next word boundary
+ BuildMI(MBB, MBB.begin(), V8::SAVEri, 2,
+ V8::SP).addImm(-NumBytes).addReg(V8::SP);
}
void SparcV8RegisterInfo::emitEpilogue(MachineFunction &MF,
BuildMI(MBB, MBBI, V8::RESTORErr, 2, V8::G0).addReg(V8::G0).addReg(V8::G0);
}
-
#include "SparcV8GenRegisterInfo.inc"
const TargetRegisterClass*
#include "SparcV8RegisterInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/Type.h"
#include "Support/STLExtras.h"
using namespace llvm;
unsigned SrcReg, int FrameIdx,
const TargetRegisterClass *RC) const
{
- abort();
- return -1;
+ assert (RC == SparcV8::IntRegsRegisterClass
+ && "Can only store 32-bit values to stack slots");
+ MachineInstr *I =
+ BuildMI (V8::STrm, 2).addFrameIndex (FrameIdx).addReg (SrcReg);
+ MBB.insert(MBBI, I);
+ return 1;
}
int SparcV8RegisterInfo::loadRegFromStackSlot(
unsigned DestReg, int FrameIdx,
const TargetRegisterClass *RC) const
{
- abort();
- return -1;
+ assert (RC == SparcV8::IntRegsRegisterClass
+ && "Can only load 32-bit registers from stack slots");
+ MachineInstr *I =
+ BuildMI (V8::LDmr, 2).addReg (DestReg).addFrameIndex (FrameIdx);
+ MBB.insert(MBBI, I);
+ return 1;
}
int SparcV8RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const {
- abort();
+ assert (RC == SparcV8::IntRegsRegisterClass
+ && "Can only copy 32-bit registers");
+ MBB.insert (MBBI,
+ BuildMI (V8::ORrr, 3, DestReg).addReg (V8::G0).addReg (SrcReg));
return -1;
}
void SparcV8RegisterInfo::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
+ std::cerr
+ << "Sorry, I don't know how to eliminate call frame pseudo instrs yet, in\n"
+ << __FUNCTION__ << " at " << __FILE__ << ":" << __LINE__ << "\n";
abort();
}
void
SparcV8RegisterInfo::eliminateFrameIndex(MachineFunction &MF,
MachineBasicBlock::iterator II) const {
+ unsigned i = 0;
+ MachineInstr &MI = *II;
+ while (!MI.getOperand(i).isFrameIndex()) {
+ ++i;
+ assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
+ }
+
+ int FrameIndex = MI.getOperand(i).getFrameIndex();
+
+ std::cerr
+ << "Sorry, I don't know how to eliminate frame indices yet\n"
+ << "Frame index was " << FrameIndex << ", in\n"
+ << __FUNCTION__ << "() at " << __FILE__ << ":" << __LINE__ << "\n";
abort();
}
void SparcV8RegisterInfo::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front();
+ MachineFrameInfo *MFI = MF.getFrameInfo();
- // Eventually this should emit the correct save instruction based on the
- // number of bytes in the frame. For now we just hardcode it.
- BuildMI(MBB, MBB.begin(), V8::SAVEri, 2, V8::SP).addImm(-112).addReg(V8::SP);
+ // Get the number of bytes to allocate from the FrameInfo
+ int NumBytes = (int) MFI->getStackSize();
+
+ // Emit the correct save instruction based on the number of bytes in the frame.
+ // Minimum stack frame size according to V8 ABI is:
+ // 16 words for register window spill
+ // 1 word for address of returned aggregate-value
+ // + 6 words for passing parameters on the stack
+ // ----------
+ // 23 words * 4 bytes per word = 92 bytes
+ NumBytes += 92;
+ NumBytes = (NumBytes + 3) & ~3; // Round up to next word boundary
+ BuildMI(MBB, MBB.begin(), V8::SAVEri, 2,
+ V8::SP).addImm(-NumBytes).addReg(V8::SP);
}
void SparcV8RegisterInfo::emitEpilogue(MachineFunction &MF,
BuildMI(MBB, MBBI, V8::RESTORErr, 2, V8::G0).addReg(V8::G0).addReg(V8::G0);
}
-
#include "SparcV8GenRegisterInfo.inc"
const TargetRegisterClass*