diff options
Diffstat (limited to 'lib/CodeGen/MachineModuleInfo.cpp')
-rw-r--r-- | lib/CodeGen/MachineModuleInfo.cpp | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineModuleInfo.cpp b/lib/CodeGen/MachineModuleInfo.cpp index 8af9d053b1..74cf9f50df 100644 --- a/lib/CodeGen/MachineModuleInfo.cpp +++ b/lib/CodeGen/MachineModuleInfo.cpp @@ -268,6 +268,39 @@ MachineModuleInfo::MachineModuleInfo() MachineModuleInfo::~MachineModuleInfo() { } +static MCCFIInstruction convertMoveToCFI(const MCRegisterInfo &MRI, + MCSymbol *Label, + const MachineLocation &Dst, + const MachineLocation &Src) { + // If advancing cfa. + if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) { + if (Src.getReg() == MachineLocation::VirtualFP) + return MCCFIInstruction::createDefCfaOffset(Label, Src.getOffset()); + // Reg + Offset + return MCCFIInstruction::createDefCfa( + Label, MRI.getDwarfRegNum(Src.getReg(), true), -Src.getOffset()); + } + + if (Src.isReg() && Src.getReg() == MachineLocation::VirtualFP) { + assert(Dst.isReg() && "Machine move not supported yet."); + return MCCFIInstruction::createDefCfaRegister( + Label, MRI.getDwarfRegNum(Dst.getReg(), true)); + } + + assert(!Dst.isReg() && "Machine move not supported yet."); + return MCCFIInstruction::createOffset( + Label, MRI.getDwarfRegNum(Src.getReg(), true), Dst.getOffset()); +} + + +void MachineModuleInfo::addFrameMove(MCSymbol *Label, + const MachineLocation &Dst, + const MachineLocation &Src) { + MCCFIInstruction I = + convertMoveToCFI(Context.getRegisterInfo(), Label, Dst, Src); + FrameInstructions.push_back(I); +} + bool MachineModuleInfo::doInitialization(Module &M) { ObjFileMMI = 0; @@ -303,7 +336,7 @@ bool MachineModuleInfo::doFinalization(Module &M) { /// void MachineModuleInfo::EndFunction() { // Clean up frame info. - FrameMoves.clear(); + FrameInstructions.clear(); // Clean up exception info. LandingPads.clear(); |