#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/Analysis/DebugInfo.h"
-#define GET_REGINFO_MC_DESC
#define GET_REGINFO_TARGET_DESC
#include "MipsGenRegisterInfo.inc"
MipsRegisterInfo::MipsRegisterInfo(const MipsSubtarget &ST,
const TargetInstrInfo &tii)
- : MipsGenRegisterInfo(MipsRegDesc, MipsRegInfoDesc,
- Mips::ADJCALLSTACKDOWN, Mips::ADJCALLSTACKUP),
- Subtarget(ST), TII(tii) {}
+ : MipsGenRegisterInfo(Mips::RA), Subtarget(ST), TII(tii) {}
/// getRegisterNumbering - Given the enum value for some register, e.g.
/// Mips::RA, return the number that it corresponds to (e.g. 31).
Reserved.set(Mips::SP);
Reserved.set(Mips::FP);
Reserved.set(Mips::RA);
- Reserved.set(Mips::F31);
- Reserved.set(Mips::D15);
-
- // SRV4 requires that odd register can't be used.
- if (!Subtarget.isSingleFloat() && !Subtarget.isMips32())
- for (unsigned FReg=(Mips::F0)+1; FReg < Mips::F30; FReg+=2)
- Reserved.set(FReg);
return Reserved;
}
<< "spOffset : " << spOffset << "\n"
<< "stackSize : " << stackSize << "\n");
- int Offset;
-
- // Calculate final offset.
- // - There is no need to change the offset if the frame object is one of the
- // following: an outgoing argument, pointer to a dynamically allocated
- // stack space or a $gp restore location,
- // - If the frame object is any of the following, its offset must be adjusted
- // by adding the size of the stack:
- // incoming argument, callee-saved register location or local variable.
- if (MipsFI->isOutArgFI(FrameIndex) || MipsFI->isGPFI(FrameIndex) ||
- MipsFI->isDynAllocFI(FrameIndex))
- Offset = spOffset;
- else
- Offset = spOffset + stackSize;
-
- Offset += MI.getOperand(i-1).getImm();
-
- DEBUG(errs() << "Offset : " << Offset << "\n" << "<--------->\n");
-
- unsigned NewReg = 0;
- int NewImm = 0;
- MachineBasicBlock &MBB = *MI.getParent();
- bool ATUsed;
- unsigned FrameReg;
const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
int MinCSFI = 0;
int MaxCSFI = -1;
// 3. Locations for callee-saved registers.
// Everything else is referenced relative to whatever register
// getFrameRegister() returns.
+ unsigned FrameReg;
+
if (MipsFI->isOutArgFI(FrameIndex) || MipsFI->isDynAllocFI(FrameIndex) ||
(FrameIndex >= MinCSFI && FrameIndex <= MaxCSFI))
FrameReg = Mips::SP;
else
FrameReg = getFrameRegister(MF);
- // Offset fits in the 16-bit field
- if (Offset < 0x8000 && Offset >= -0x8000) {
- NewReg = FrameReg;
- NewImm = Offset;
- ATUsed = false;
- }
- else {
- const TargetInstrInfo *TII = MF.getTarget().getInstrInfo();
+ // Calculate final offset.
+ // - There is no need to change the offset if the frame object is one of the
+ // following: an outgoing argument, pointer to a dynamically allocated
+ // stack space or a $gp restore location,
+ // - If the frame object is any of the following, its offset must be adjusted
+ // by adding the size of the stack:
+ // incoming argument, callee-saved register location or local variable.
+ int Offset;
+
+ if (MipsFI->isOutArgFI(FrameIndex) || MipsFI->isGPFI(FrameIndex) ||
+ MipsFI->isDynAllocFI(FrameIndex))
+ Offset = spOffset;
+ else
+ Offset = spOffset + stackSize;
+
+ Offset += MI.getOperand(i+1).getImm();
+
+ DEBUG(errs() << "Offset : " << Offset << "\n" << "<--------->\n");
+
+ // If MI is not a debug value, make sure Offset fits in the 16-bit immediate
+ // field.
+ if (!MI.isDebugValue() && (Offset >= 0x8000 || Offset < -0x8000)) {
+ MachineBasicBlock &MBB = *MI.getParent();
DebugLoc DL = II->getDebugLoc();
- int ImmLo = (short)(Offset & 0xffff);
int ImmHi = (((unsigned)Offset & 0xffff0000) >> 16) +
((Offset & 0x8000) != 0);
// FIXME: change this when mips goes MC".
- BuildMI(MBB, II, DL, TII->get(Mips::NOAT));
- BuildMI(MBB, II, DL, TII->get(Mips::LUi), Mips::AT).addImm(ImmHi);
- BuildMI(MBB, II, DL, TII->get(Mips::ADDu), Mips::AT).addReg(FrameReg)
- .addReg(Mips::AT);
- NewReg = Mips::AT;
- NewImm = ImmLo;
-
- ATUsed = true;
- }
+ BuildMI(MBB, II, DL, TII.get(Mips::NOAT));
+ BuildMI(MBB, II, DL, TII.get(Mips::LUi), Mips::AT).addImm(ImmHi);
+ BuildMI(MBB, II, DL, TII.get(Mips::ADDu), Mips::AT).addReg(FrameReg)
+ .addReg(Mips::AT);
+ FrameReg = Mips::AT;
+ Offset = (short)(Offset & 0xffff);
- // FIXME: change this when mips goes MC".
- if (ATUsed)
BuildMI(MBB, ++II, MI.getDebugLoc(), TII.get(Mips::ATMACRO));
+ }
- MI.getOperand(i).ChangeToRegister(NewReg, false);
- MI.getOperand(i-1).ChangeToImmediate(NewImm);
-}
-
-unsigned MipsRegisterInfo::
-getRARegister() const {
- return Mips::RA;
+ MI.getOperand(i).ChangeToRegister(FrameReg, false);
+ MI.getOperand(i+1).ChangeToImmediate(Offset);
}
unsigned MipsRegisterInfo::
llvm_unreachable("What is the exception handler register");
return 0;
}
-
-int MipsRegisterInfo::
-getDwarfRegNum(unsigned RegNum, bool isEH) const {
- return MipsGenRegisterInfo::getDwarfRegNumFull(RegNum, 0);
-}
-
-int MipsRegisterInfo::getLLVMRegNum(unsigned DwarfRegNo, bool isEH) const {
- return MipsGenRegisterInfo::getLLVMRegNumFull(DwarfRegNo,0);
-}