diff --git a/include/llvm/Target/TargetRegisterInfo.h b/include/llvm/Target/TargetRegisterInfo.h index 07737590af4..cb29c7306ea 100644 --- a/include/llvm/Target/TargetRegisterInfo.h +++ b/include/llvm/Target/TargetRegisterInfo.h @@ -698,6 +698,18 @@ public: /// the stack frame of the specified index. virtual int getFrameIndexOffset(MachineFunction &MF, int FI) const; + /// getFrameIndexReference - This method should return the base register + /// and offset used to reference a frame index location. The offset is + /// returned directly, and the base register is returned via FrameReg. + virtual int getFrameIndexReference(MachineFunction &MF, int FI, + unsigned &FrameReg) const { + // By default, assume all frame indices are referenced via whatever + // getFrameRegister() says. The target can override this if it's doing + // something different. + FrameReg = getFrameRegister(MF); + return getFrameIndexOffset(MF, FI); + } + /// getRARegister - This method should return the register where the return /// address can be found. virtual unsigned getRARegister() const = 0; diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp index 8d4783be8d3..1241c5ffeb3 100644 --- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp +++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp @@ -1182,8 +1182,9 @@ DIE *DwarfDebug::createDbgScopeVariable(DbgVariable *DV, CompileUnit *Unit) { // Variables for abstract instances of inlined functions don't get a // location. MachineLocation Location; - Location.set(RI->getFrameRegister(*MF), - RI->getFrameIndexOffset(*MF, DV->getFrameIndex())); + unsigned FrameReg; + int Offset = RI->getFrameIndexReference(*MF, DV->getFrameIndex(), FrameReg); + Location.set(FrameReg, Offset); if (VD.hasComplexAddress()) @@ -1465,9 +1466,9 @@ DIE *DwarfDebug::constructVariableDIE(DbgVariable *DV, // Add variable address. if (!Scope->isAbstractScope()) { MachineLocation Location; - Location.set(RI->getFrameRegister(*MF), - RI->getFrameIndexOffset(*MF, DV->getFrameIndex())); - + unsigned FrameReg; + int Offset = RI->getFrameIndexReference(*MF, DV->getFrameIndex(), FrameReg); + Location.set(FrameReg, Offset); if (VD.hasComplexAddress()) addComplexAddress(DV, VariableDie, dwarf::DW_AT_location, Location);