#include "Mips16RegisterInfo.h"
#include "Mips.h"
+#include "Mips16InstrInfo.h"
#include "MipsAnalyzeImmediate.h"
#include "MipsInstrInfo.h"
-#include "MipsSubtarget.h"
#include "MipsMachineFunction.h"
-#include "llvm/Constants.h"
-#include "llvm/DebugInfo.h"
-#include "llvm/Type.h"
-#include "llvm/Function.h"
-#include "llvm/CodeGen/ValueTypes.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineFunction.h"
+#include "MipsSubtarget.h"
+#include "llvm/ADT/BitVector.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/Target/TargetFrameLowering.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
-#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/DebugInfo.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/Support/raw_ostream.h"
-#include "llvm/ADT/BitVector.h"
-#include "llvm/ADT/STLExtras.h"
+#include "llvm/Target/TargetFrameLowering.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
using namespace llvm;
-Mips16RegisterInfo::Mips16RegisterInfo(const MipsSubtarget &ST)
- : MipsRegisterInfo(ST) {}
+Mips16RegisterInfo::Mips16RegisterInfo(const MipsSubtarget &ST,
+ const Mips16InstrInfo &I)
+ : MipsRegisterInfo(ST), TII(I) {}
+
+bool Mips16RegisterInfo::requiresRegisterScavenging
+ (const MachineFunction &MF) const {
+ return true;
+}
+bool Mips16RegisterInfo::requiresFrameIndexScavenging
+ (const MachineFunction &MF) const {
+ return true;
+}
+
+bool Mips16RegisterInfo::useFPForScavengingIndex
+ (const MachineFunction &MF) const {
+ return false;
+}
+
+bool Mips16RegisterInfo::saveScavengerRegister
+ (MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I,
+ MachineBasicBlock::iterator &UseMI,
+ const TargetRegisterClass *RC,
+ unsigned Reg) const {
+ DebugLoc DL;
+ 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 {
- // Simply discard ADJCALLSTACKDOWN, ADJCALLSTACKUP instructions.
+ 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);
}
DEBUG(errs() << "Offset : " << Offset << "\n" << "<--------->\n");
+ if (!MI.isDebugValue() && ( ((FrameReg != Mips::SP) && !isInt<16>(Offset)) ||
+ ((FrameReg == Mips::SP) && !isInt<15>(Offset)) )) {
+ llvm_unreachable("frame offset does not fit in instruction");
+ }
MI.getOperand(OpNo).ChangeToRegister(FrameReg, false);
MI.getOperand(OpNo + 1).ChangeToImmediate(Offset);