/// encoding specified.
virtual unsigned getISAEncoding() { return 0; }
- /// \brief Emit a partial dwarf register operation.
+ /// \brief Emit a partial DWARF register operation.
/// \param MLoc the register
/// \param PieceSizeInBits size and
/// \param PieceOffsetBits offset of the piece in bits, if this is one
/// piece of an aggregate value.
+ ///
+ /// If size and offset is zero an operation for the entire
+ /// register is emitted: Some targets do not provide a DWARF
+ /// register number for every register. If this is the case, this
+ /// function will attempt to emit a DWARF register by emitting a
+ /// piece of a super-register or by piecing together multiple
+ /// subregisters that alias the register.
void EmitDwarfRegOpPiece(ByteStreamer &BS, const MachineLocation &MLoc,
- unsigned PieceSize,
- unsigned PieceOffset) const;
+ unsigned PieceSize = 0,
+ unsigned PieceOffset = 0) const;
/// EmitDwarfRegOp - Emit dwarf register operation.
/// \param Indirect whether this is a register-indirect address
Streamer.EmitInt8(dwarf::DW_OP_shr, "DW_OP_shr");
}
-/// Some targets do not provide a DWARF register number for every
-/// register. This function attempts to emit a DWARF register by
-/// emitting a piece of a super-register or by piecing together
-/// multiple subregisters that alias the register.
+// Some targets do not provide a DWARF register number for every
+// register. This function attempts to emit a DWARF register by
+// emitting a piece of a super-register or by piecing together
+// multiple subregisters that alias the register.
void AsmPrinter::EmitDwarfRegOpPiece(ByteStreamer &Streamer,
const MachineLocation &MLoc,
unsigned PieceSizeInBits,
unsigned PieceOffsetInBits) const {
- assert(!MLoc.isIndirect());
+ assert(MLoc.isReg() && "MLoc must be a register");
const TargetRegisterInfo *TRI = TM.getRegisterInfo();
int Reg = TRI->getDwarfRegNum(MLoc.getReg(), false);
}
// Attempt to find a valid super- or sub-register.
- return EmitDwarfRegOpPiece(Streamer, MLoc, 0, 0);
+ return EmitDwarfRegOpPiece(Streamer, MLoc);
}
if (MLoc.isIndirect())