diff options
Diffstat (limited to 'lib/Target/ARM/Thumb2InstrInfo.cpp')
| -rw-r--r-- | lib/Target/ARM/Thumb2InstrInfo.cpp | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/lib/Target/ARM/Thumb2InstrInfo.cpp b/lib/Target/ARM/Thumb2InstrInfo.cpp index 387edaf..20f13f1 100644 --- a/lib/Target/ARM/Thumb2InstrInfo.cpp +++ b/lib/Target/ARM/Thumb2InstrInfo.cpp @@ -382,8 +382,8 @@ bool llvm::rewriteT2FrameIndex(MachineInstr &MI, unsigned FrameRegIdx, MI.getOperand(FrameRegIdx+1).ChangeToImmediate(ThisImmVal); } else { - // AddrMode4 cannot handle any offset. - if (AddrMode == ARMII::AddrMode4) + // AddrMode4 and AddrMode6 cannot handle any offset. + if (AddrMode == ARMII::AddrMode4 || AddrMode == ARMII::AddrMode6) return false; // AddrModeT2_so cannot handle any offset. If there is no offset @@ -418,15 +418,12 @@ bool llvm::rewriteT2FrameIndex(MachineInstr &MI, unsigned FrameRegIdx, NewOpc = positiveOffsetOpcode(Opcode); NumBits = 12; } - } else { - // VFP and NEON address modes. - int InstrOffs = 0; - if (AddrMode == ARMII::AddrMode5) { - const MachineOperand &OffOp = MI.getOperand(FrameRegIdx+1); - InstrOffs = ARM_AM::getAM5Offset(OffOp.getImm()); - if (ARM_AM::getAM5Op(OffOp.getImm()) == ARM_AM::sub) - InstrOffs *= -1; - } + } else if (AddrMode == ARMII::AddrMode5) { + // VFP address mode. + const MachineOperand &OffOp = MI.getOperand(FrameRegIdx+1); + int InstrOffs = ARM_AM::getAM5Offset(OffOp.getImm()); + if (ARM_AM::getAM5Op(OffOp.getImm()) == ARM_AM::sub) + InstrOffs *= -1; NumBits = 8; Scale = 4; Offset += InstrOffs * 4; @@ -435,6 +432,8 @@ bool llvm::rewriteT2FrameIndex(MachineInstr &MI, unsigned FrameRegIdx, Offset = -Offset; isSub = true; } + } else { + llvm_unreachable("Unsupported addressing mode!"); } if (NewOpc != Opcode) |