diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/ARM/Thumb2InstrInfo.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Target/ARM/Thumb2InstrInfo.cpp b/lib/Target/ARM/Thumb2InstrInfo.cpp index f56fc2b427..cf2d09912d 100644 --- a/lib/Target/ARM/Thumb2InstrInfo.cpp +++ b/lib/Target/ARM/Thumb2InstrInfo.cpp @@ -421,8 +421,12 @@ int llvm::rewriteT2FrameIndex(MachineInstr &MI, unsigned FrameRegIdx, if (AddrMode == ARMII::AddrMode5) // FIXME: Not consistent. ImmedOffset |= 1 << NumBits; - else + else { ImmedOffset = -ImmedOffset; + if (ImmedOffset == 0) + // Change the opcode back if the encoded offset is zero. + MI.setDesc(TII.get(positiveOffsetOpcode(NewOpc))); + } } ImmOp.ChangeToImmediate(ImmedOffset); Offset &= ~(Mask*Scale); |