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The immediate operands of an LDRi12 instruction doesn't need the addrmode2

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encoding tricks. Handle the 'imm doesn't fit in the insn' case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117454 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-10-27 16:50:31 +00:00
parent 0ed257c036
commit 063efbf569
1 changed files with 6 additions and 2 deletions
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8
lib/Target/ARM/ARMBaseInstrInfo.cpp
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@ -1435,8 +1435,12 @@ bool llvm::rewriteARMFrameIndex(MachineInstr &MI, unsigned FrameRegIdx,
// Otherwise, it didn't fit. Pull in what we can to simplify the immed.
ImmedOffset = ImmedOffset & Mask;
if (isSub)
ImmedOffset |= 1 << NumBits;
if (isSub) {
if (AddrMode == ARMII::AddrMode_i12)
ImmedOffset = -ImmedOffset;
else
ImmedOffset |= 1 << NumBits;
}
ImmOp.ChangeToImmediate(ImmedOffset);
Offset &= ~(Mask*Scale);
}