#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/Type.h"
-#include "Support/STLExtras.h"
+#include "llvm/ADT/STLExtras.h"
+#include <iostream>
using namespace llvm;
SparcV8RegisterInfo::SparcV8RegisterInfo()
: SparcV8GenRegisterInfo(V8::ADJCALLSTACKDOWN,
V8::ADJCALLSTACKUP) {}
-int SparcV8RegisterInfo::storeRegToStackSlot(
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI,
- unsigned SrcReg, int FrameIdx,
- const TargetRegisterClass *RC) const
-{
- assert (RC == SparcV8::IntRegsRegisterClass
- && "Can only store 32-bit values to stack slots");
- MachineInstr *I =
- BuildMI (V8::STrm, 3).addFrameIndex (FrameIdx).addSImm (0).addReg (SrcReg);
- MBB.insert(MBBI, I);
- return 1;
+static const TargetRegisterClass *getClass(unsigned SrcReg) {
+ if (SparcV8::IntRegsRegisterClass->contains(SrcReg))
+ return SparcV8::IntRegsRegisterClass;
+ else if (SparcV8::FPRegsRegisterClass->contains(SrcReg))
+ return SparcV8::FPRegsRegisterClass;
+ else if (SparcV8::DFPRegsRegisterClass->contains(SrcReg))
+ return SparcV8::DFPRegsRegisterClass;
+ else {
+ std::cerr << "Error: register of unknown class found: " << SrcReg << "\n";
+ abort ();
+ }
}
-int SparcV8RegisterInfo::loadRegFromStackSlot(
- MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- unsigned DestReg, int FrameIdx,
- const TargetRegisterClass *RC) const
-{
- assert (RC == SparcV8::IntRegsRegisterClass
- && "Can only load 32-bit registers from stack slots");
- BuildMI (MBB, I, V8::LDmr, 2, DestReg).addFrameIndex (FrameIdx).addSImm (0);
- return 1;
+void SparcV8RegisterInfo::
+storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
+ unsigned SrcReg, int FrameIdx) const {
+ const TargetRegisterClass *RC = getClass(SrcReg);
+
+ // On the order of operands here: think "[FrameIdx + 0] = SrcReg".
+ if (RC == SparcV8::IntRegsRegisterClass)
+ BuildMI (MBB, I, V8::ST, 3).addFrameIndex (FrameIdx).addSImm (0)
+ .addReg (SrcReg);
+ else if (RC == SparcV8::FPRegsRegisterClass)
+ BuildMI (MBB, I, V8::STFri, 3).addFrameIndex (FrameIdx).addSImm (0)
+ .addReg (SrcReg);
+ else if (RC == SparcV8::DFPRegsRegisterClass)
+ BuildMI (MBB, I, V8::STDFri, 3).addFrameIndex (FrameIdx).addSImm (0)
+ .addReg (SrcReg);
+ else
+ assert (0 && "Can't store this register to stack slot");
+}
+
+void SparcV8RegisterInfo::
+loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
+ unsigned DestReg, int FrameIdx) const {
+ const TargetRegisterClass *RC = getClass(DestReg);
+ if (RC == SparcV8::IntRegsRegisterClass)
+ BuildMI (MBB, I, V8::LD, 2, DestReg).addFrameIndex (FrameIdx).addSImm (0);
+ else if (RC == SparcV8::FPRegsRegisterClass)
+ BuildMI (MBB, I, V8::LDFri, 2, DestReg).addFrameIndex (FrameIdx)
+ .addSImm (0);
+ else if (RC == SparcV8::DFPRegsRegisterClass)
+ BuildMI (MBB, I, V8::LDDFri, 2, DestReg).addFrameIndex (FrameIdx)
+ .addSImm (0);
+ else
+ assert(0 && "Can't load this register from stack slot");
}
-int SparcV8RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *RC) const {
- assert (RC == SparcV8::IntRegsRegisterClass
- && "Can only copy 32-bit registers");
- BuildMI (MBB, I, V8::ORrr, 2, DestReg).addReg (V8::G0).addReg (SrcReg);
- return -1;
+void SparcV8RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I,
+ unsigned DestReg, unsigned SrcReg,
+ const TargetRegisterClass *RC) const {
+ if (RC == SparcV8::IntRegsRegisterClass)
+ BuildMI (MBB, I, V8::ORrr, 2, DestReg).addReg (V8::G0).addReg (SrcReg);
+ else if (RC == SparcV8::FPRegsRegisterClass)
+ BuildMI (MBB, I, V8::FMOVS, 1, DestReg).addReg (SrcReg);
+ else if (RC == SparcV8::DFPRegsRegisterClass)
+ BuildMI (MBB, I, V8::FpMOVD, 1, DestReg).addReg (SrcReg);
+ else
+ assert (0 && "Can't copy this register");
}
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();
+ MachineInstr &MI = *I;
+ int size = MI.getOperand (0).getImmedValue ();
+ if (MI.getOpcode () == V8::ADJCALLSTACKDOWN)
+ size = -size;
+ BuildMI (MBB, I, V8::ADDri, 2, V8::SP).addReg (V8::SP).addSImm (size);
+ MBB.erase (I);
}
void
-SparcV8RegisterInfo::eliminateFrameIndex(MachineFunction &MF,
- MachineBasicBlock::iterator II) const {
+SparcV8RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II) const {
unsigned i = 0;
MachineInstr &MI = *II;
while (!MI.getOperand(i).isFrameIndex()) {
MI.SetMachineOperandReg (i, V8::FP);
// Addressable stack objects are accessed using neg. offsets from %fp
+ MachineFunction &MF = *MI.getParent()->getParent();
int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) +
MI.getOperand(i+1).getImmedValue();
// note: Offset < 0
// 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:
+ // 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 + 7) & ~7; // Round up to next doubleword boundary
- // (Technically, a word boundary should be sufficient, but SPARC as complains)
+ // Round up to next doubleword boundary -- a double-word boundary
+ // is required by the ABI.
+ NumBytes = (NumBytes + 7) & ~7;
BuildMI(MBB, MBB.begin(), V8::SAVEri, 2,
V8::SP).addImm(-NumBytes).addReg(V8::SP);
}
case Type::FloatTyID: return &FPRegsInstance;
case Type::DoubleTyID: return &DFPRegsInstance;
case Type::LongTyID:
- case Type::ULongTyID: assert(0 && "Long values can't fit in registers!");
- default: assert(0 && "Invalid type to getClass!");
+ case Type::ULongTyID: assert(0 && "Long values do not fit in registers!");
+ default: assert(0 && "Invalid type to getClass!");
case Type::BoolTyID:
case Type::SByteTyID:
case Type::UByteTyID: