-//===-- Mips16RegisterInfo.cpp - MIPS16 Register Information -== ----------===//
+//===-- Mips16RegisterInfo.cpp - MIPS16 Register Information --------------===//
//
// The LLVM Compiler Infrastructure
//
//===----------------------------------------------------------------------===//
#include "Mips16RegisterInfo.h"
+#include "Mips16InstrInfo.h"
#include "Mips.h"
#include "Mips16InstrInfo.h"
#include "MipsAnalyzeImmediate.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
-#include "llvm/Constants.h"
#include "llvm/DebugInfo.h"
-#include "llvm/Function.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Type.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/Type.h"
using namespace llvm;
-Mips16RegisterInfo::Mips16RegisterInfo(const MipsSubtarget &ST,
- const Mips16InstrInfo &I)
- : MipsRegisterInfo(ST), TII(I) {}
+Mips16RegisterInfo::Mips16RegisterInfo(const MipsSubtarget &ST)
+ : MipsRegisterInfo(ST) {}
bool Mips16RegisterInfo::requiresRegisterScavenging
(const MachineFunction &MF) const {
- return true;
+ return false;
}
bool Mips16RegisterInfo::requiresFrameIndexScavenging
(const MachineFunction &MF) const {
- return true;
+ return false;
}
bool Mips16RegisterInfo::useFPForScavengingIndex
const TargetRegisterClass *RC,
unsigned Reg) const {
DebugLoc DL;
+ const TargetInstrInfo &TII = *MBB.getParent()->getTarget().getInstrInfo();
TII.copyPhysReg(MBB, I, DL, Mips::T0, Reg, true);
TII.copyPhysReg(MBB, UseMI, DL, Reg, Mips::T0, true);
return true;
}
-// This function eliminate ADJCALLSTACKDOWN,
-// ADJCALLSTACKUP pseudo instructions
-void Mips16RegisterInfo::
-eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I) const {
- const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
-
- if (!TFI->hasReservedCallFrame(MF)) {
- int64_t Amount = I->getOperand(0).getImm();
-
- if (I->getOpcode() == Mips::ADJCALLSTACKDOWN)
- Amount = -Amount;
-
- const Mips16InstrInfo *II = static_cast<const Mips16InstrInfo*>(&TII);
-
- II->adjustStackPtr(Mips::SP, Amount, MBB, I);
- }
-
- MBB.erase(I);
+const TargetRegisterClass *
+Mips16RegisterInfo::intRegClass(unsigned Size) const {
+ assert(Size == 4);
+ return &Mips::CPU16RegsRegClass;
}
void Mips16RegisterInfo::eliminateFI(MachineBasicBlock::iterator II,
// by adding the size of the stack:
// incoming argument, callee-saved register location or local variable.
int64_t Offset;
+ bool IsKill = false;
Offset = SPOffset + (int64_t)StackSize;
Offset += MI.getOperand(OpNo + 1).getImm();
DEBUG(errs() << "Offset : " << Offset << "\n" << "<--------->\n");
- MI.getOperand(OpNo).ChangeToRegister(FrameReg, false);
+ if (!MI.isDebugValue() &&
+ !Mips16InstrInfo::validImmediate(MI.getOpcode(), FrameReg, Offset)) {
+ MachineBasicBlock &MBB = *MI.getParent();
+ DebugLoc DL = II->getDebugLoc();
+ unsigned NewImm;
+ const Mips16InstrInfo &TII =
+ *static_cast<const Mips16InstrInfo*>(
+ MBB.getParent()->getTarget().getInstrInfo());
+ FrameReg = TII.loadImmediate(FrameReg, Offset, MBB, II, DL, NewImm);
+ Offset = SignExtend64<16>(NewImm);
+ IsKill = true;
+ }
+ MI.getOperand(OpNo).ChangeToRegister(FrameReg, false, false, IsKill);
MI.getOperand(OpNo + 1).ChangeToImmediate(Offset);