diff options
Diffstat (limited to 'llvm/lib/Target/ARM')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMAsmPrinter.cpp | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp index b227eaed8d6..a19584c7d40 100644 --- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp +++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp @@ -367,6 +367,18 @@ bool ARMAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum, unsigned NumVals = InlineAsm::getNumOperandRegisters(Flags); unsigned RC; + bool FirstHalf; + const ARMBaseTargetMachine &ATM = + static_cast<const ARMBaseTargetMachine &>(TM); + + // 'Q' should correspond to the low order register and 'R' to the high + // order register. Whether this corresponds to the upper or lower half + // depends on the endianess mode. + if (ExtraCode[0] == 'Q') + FirstHalf = ATM.isLittleEndian(); + else + // ExtraCode[0] == 'R'. + FirstHalf = !ATM.isLittleEndian(); const TargetRegisterInfo *TRI = MF->getSubtarget().getRegisterInfo(); if (InlineAsm::hasRegClassConstraint(Flags, RC) && ARM::GPRPairRegClass.hasSubClassEq(TRI->getRegClass(RC))) { @@ -376,14 +388,14 @@ bool ARMAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNum, if (!MO.isReg()) return true; const TargetRegisterInfo *TRI = MF->getSubtarget().getRegisterInfo(); - unsigned Reg = TRI->getSubReg(MO.getReg(), ExtraCode[0] == 'Q' ? + unsigned Reg = TRI->getSubReg(MO.getReg(), FirstHalf ? ARM::gsub_0 : ARM::gsub_1); O << ARMInstPrinter::getRegisterName(Reg); return false; } if (NumVals != 2) return true; - unsigned RegOp = ExtraCode[0] == 'Q' ? OpNum : OpNum + 1; + unsigned RegOp = FirstHalf ? OpNum : OpNum + 1; if (RegOp >= MI->getNumOperands()) return true; const MachineOperand &MO = MI->getOperand(RegOp); |
