diff options
| author | Jim Grosbach <grosbach@apple.com> | 2010-10-27 16:50:31 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2010-10-27 16:50:31 +0000 |
| commit | 063efbf569e46776093ddf50099c98fdbb362167 (patch) | |
| tree | ace7209339d9e067f8705bbd49d740ae1932eb7e | |
| parent | 0ed257c0365f1e2227ccd9f42c2ae1f80815d6d2 (diff) | |
The immediate operands of an LDRi12 instruction doesn't need the addrmode2
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
| -rw-r--r-- | lib/Target/ARM/ARMBaseInstrInfo.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp index 69e10baafb..223cbe75e0 100644 --- a/lib/Target/ARM/ARMBaseInstrInfo.cpp +++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp @@ -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); } |