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When using multiple instructions to reference a frame index, make sure to 

update the opcode when necessary as well as the source register.

llvm-svn: 121346
This commit is contained in:
Jim Grosbach 2010-12-09 01:22:13 +00:00
parent 0b2630c500
commit bd30afe4c2
1 changed files with 5 additions and 0 deletions
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5
llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp
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@ -1209,7 +1209,12 @@ ARMBaseRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
emitT2RegPlusImmediate(MBB, II, MI.getDebugLoc(), ScratchReg, FrameReg,
Offset, Pred, PredReg, TII);
}
// Update the original instruction to use the scratch register.
MI.getOperand(i).ChangeToRegister(ScratchReg, false, false, true);
if (MI.getOpcode() == ARM::t2ADDrSPi)
MI.setDesc(TII.get(ARM::t2ADDri));
else if (MI.getOpcode() == ARM::t2SUBrSPi)
MI.setDesc(TII.get(ARM::t2SUBri));
}
}