diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMAsmPrinter.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMAsmPrinter.cpp | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp index fa06bf7eeb5..135148d1645 100644 --- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp +++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp @@ -817,6 +817,7 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) { const MachineFunction &MF = *MI->getParent()->getParent(); const TargetRegisterInfo *RegInfo = MF.getTarget().getRegisterInfo(); + const ARMFunctionInfo &AFI = *MF.getInfo<ARMFunctionInfo>(); unsigned FramePtr = RegInfo->getFrameRegister(MF); unsigned Opc = MI->getOpcode(); @@ -896,10 +897,23 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) { case ARM::tADDrSPi: Offset = -MI->getOperand(2).getImm()*4; break; - case ARM::tLDRpci: - assert(0 && "Not implemented yet!"); + case ARM::tLDRpci: { + // Grab the constpool index and check, whether it corresponds to + // original or cloned constpool entry. + unsigned CPI = MI->getOperand(1).getIndex(); + const MachineConstantPool *MCP = MF.getConstantPool(); + if (CPI >= MCP->getConstants().size()) + CPI = AFI.getOriginalCPIdx(CPI); + assert(CPI != -1U && "Invalid constpool index"); + + // Derive the actual offset. + const MachineConstantPoolEntry &CPE = MCP->getConstants()[CPI]; + assert(!CPE.isMachineConstantPoolEntry() && "Invalid constpool entry"); + // FIXME: Check for user, it should be "add" instruction! + Offset = -cast<ConstantInt>(CPE.Val.ConstVal)->getSExtValue(); break; } + } if (DstReg == FramePtr && FramePtr != ARM::SP) // Set-up of the frame pointer. |
