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Debug Info: Implement DwarfUnit::addRegisterOffset using DwarfExpression.

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No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225707 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl
2015-01-12 22:19:26 +00:00
parent f89325d832
commit 93eb099f24
5 changed files with 60 additions and 16 deletions
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8
lib/CodeGen/AsmPrinter/DwarfExpression.h
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@ -24,6 +24,7 @@ class TargetMachine;
/// independently of whether they are emitted into a DIE or into a .debug_loc
/// entry.
class DwarfExpression {
protected:
TargetMachine &TM;
public:
DwarfExpression(TargetMachine &TM) : TM(TM) {}
@ -31,6 +32,9 @@ public:
virtual void EmitOp(uint8_t Op, const char* Comment = nullptr) = 0;
virtual void EmitSigned(int Value) = 0;
virtual void EmitUnsigned(unsigned Value) = 0;
virtual unsigned getFrameRegister() = 0;
/// Emit a dwarf register operation.
void AddReg(int DwarfReg, const char* Comment = nullptr);
/// Emit an (double-)indirect dwarf register operation.
@ -43,6 +47,10 @@ public:
/// Emit a shift-right dwarf expression.
void AddShr(unsigned ShiftBy);
/// Emit an indirect dwarf register operation for the given machine register.
/// Returns false if no DWARF register exists for MachineReg.
bool AddMachineRegIndirect(unsigned MachineReg, int Offset);
/// \brief Emit a partial DWARF register operation.
/// \param MLoc the register
/// \param PieceSize size and