[llvm-commits] [llvm] r134628 - /llvm/trunk/lib/Target/Mips/MipsRegisterInfo.cpp
Akira Hatanaka
ahatanak at gmail.com
Thu Jul 7 12:13:10 PDT 2011
Author: ahatanak
Date: Thu Jul 7 14:13:09 2011
New Revision: 134628
URL: http://llvm.org/viewvc/llvm-project?rev=134628&view=rev
Log:
Simplify MipsRegisterInfo::eliminateFrameIndex.
Modified:
llvm/trunk/lib/Target/Mips/MipsRegisterInfo.cpp
Modified: llvm/trunk/lib/Target/Mips/MipsRegisterInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsRegisterInfo.cpp?rev=134628&r1=134627&r2=134628&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsRegisterInfo.cpp (original)
+++ llvm/trunk/lib/Target/Mips/MipsRegisterInfo.cpp Thu Jul 7 14:13:09 2011
@@ -218,51 +218,31 @@
else
Offset = spOffset + stackSize;
- if (MI.isDebugValue()) {
- MI.getOperand(i).ChangeToRegister(FrameReg, false /*isDef*/);
- MI.getOperand(i+1).ChangeToImmediate(Offset);
- return;
- }
-
Offset += MI.getOperand(i+1).getImm();
DEBUG(errs() << "Offset : " << Offset << "\n" << "<--------->\n");
- unsigned NewReg = 0;
- int NewImm = 0;
- MachineBasicBlock &MBB = *MI.getParent();
- bool ATUsed;
-
- // 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();
+ // 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);
+ MI.getOperand(i).ChangeToRegister(FrameReg, false);
+ MI.getOperand(i+1).ChangeToImmediate(Offset);
}
unsigned MipsRegisterInfo::
More information about the llvm-commits
mailing list