maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Change the representation of MCCFIInstruction. 

We now store the Register and Offset directly. MachineLocation is gone (from
this file)!

llvm-svn: 168536
This commit is contained in:
Rafael Espindola 2012-11-24 04:33:48 +00:00
parent 6c92b89a9c
commit cc0c74a76c
2 changed files with 47 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
llvm/include/llvm/MC/MCDwarf.h
View File

@ -16,7 +16,6 @@
#define LLVM_MC_MCDWARF_H
#include "llvm/ADT/StringRef.h"
#include "llvm/MC/MachineLocation.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Compiler.h"
@ -272,108 +271,102 @@ namespace llvm {
private:
OpType Operation;
MCSymbol *Label;
// Move to & from location.
MachineLocation Destination;
MachineLocation Source;
unsigned Register;
int Offset;
std::vector<char> Values;
MCCFIInstruction(OpType Op, MCSymbol *L, const MachineLocation &D,
const MachineLocation &S, StringRef V) :
Operation(Op), Label(L), Destination(D), Source(S),
MCCFIInstruction(OpType Op, MCSymbol *L, unsigned R,
int O, StringRef V) :
Operation(Op), Label(L), Register(R), Offset(O),
Values(V.begin(), V.end()) {
}
public:
static MCCFIInstruction
createOffset(MCSymbol *L, unsigned Register, int Offset) {
MachineLocation Dest(Register, Offset);
MachineLocation Source(Register, Offset);
MCCFIInstruction Ret(OpOffset, L, Dest, Source, "");
MCCFIInstruction Ret(OpOffset, L, Register, Offset, "");
return Ret;
}
static MCCFIInstruction
createDefCfaRegister(MCSymbol *L, unsigned Register) {
MachineLocation Dest(Register);
MachineLocation Source(MachineLocation::VirtualFP);
MCCFIInstruction Ret(OpDefCfaRegister, L, Dest, Source, "");
MCCFIInstruction Ret(OpDefCfaRegister, L, Register, 0, "");
return Ret;
}
static MCCFIInstruction createDefCfaOffset(MCSymbol *L, int Offset) {
MachineLocation Dest(MachineLocation::VirtualFP);
MachineLocation Source(MachineLocation::VirtualFP, -Offset);
MCCFIInstruction Ret(OpDefCfaOffset, L, Dest, Source, "");
MCCFIInstruction Ret(OpDefCfaOffset, L, 0, -Offset, "");
return Ret;
}
static MCCFIInstruction
createDefCfa(MCSymbol *L, unsigned Register, int Offset) {
MachineLocation Dest(MachineLocation::VirtualFP);
MachineLocation Source(Register, -Offset);
MCCFIInstruction Ret(OpDefCfa, L, Dest, Source, "");
MCCFIInstruction Ret(OpDefCfa, L, Register, -Offset, "");
return Ret;
}
static MCCFIInstruction createUndefined(MCSymbol *L, unsigned Register) {
MachineLocation Dummy;
MachineLocation Dest(Register);
MCCFIInstruction Ret(OpUndefined, L, Dest, Dummy, "");
MCCFIInstruction Ret(OpUndefined, L, Register, 0, "");
return Ret;
}
static MCCFIInstruction createRestore(MCSymbol *L, unsigned Register) {
MachineLocation Dummy;
MachineLocation Dest(Register);
MCCFIInstruction Ret(OpRestore, L, Dest, Dummy, "");
MCCFIInstruction Ret(OpRestore, L, Register, 0, "");
return Ret;
}
static MCCFIInstruction createSameValue(MCSymbol *L, unsigned Register) {
MachineLocation Dummy;
MachineLocation Dest(Register);
MCCFIInstruction Ret(OpSameValue, L, Dest, Dummy, "");
MCCFIInstruction Ret(OpSameValue, L, Register, 0, "");
return Ret;
}
static MCCFIInstruction createRestoreState(MCSymbol *L) {
MachineLocation Dummy;
MCCFIInstruction Ret(OpRestoreState, L, Dummy, Dummy, "");
MCCFIInstruction Ret(OpRestoreState, L, 0, 0, "");
return Ret;
}
static MCCFIInstruction createRememberState(MCSymbol *L) {
MachineLocation Dummy;
MCCFIInstruction Ret(OpRememberState, L, Dummy, Dummy, "");
MCCFIInstruction Ret(OpRememberState, L, 0, 0, "");
return Ret;
}
static MCCFIInstruction
createRelOffset(MCSymbol *L, unsigned Register, int Offset) {
MachineLocation Dest(Register, Offset);
MachineLocation Source(Register, Offset);
MCCFIInstruction Ret(OpRelOffset, L, Dest, Source, "");
MCCFIInstruction Ret(OpRelOffset, L, Register, Offset, "");
return Ret;
}
static MCCFIInstruction
createAdjustCfaOffset(MCSymbol *L, int Adjustment) {
MachineLocation Dest(MachineLocation::VirtualFP);
MachineLocation Source(MachineLocation::VirtualFP, Adjustment);
MCCFIInstruction Ret(OpAdjustCfaOffset, L, Dest, Source, "");
MCCFIInstruction Ret(OpAdjustCfaOffset, L, 0, Adjustment, "");
return Ret;
}
static MCCFIInstruction createEscape(MCSymbol *L, StringRef Vals) {
MachineLocation Dummy;
MCCFIInstruction Ret(OpEscape, L, Dummy, Dummy, Vals);
MCCFIInstruction Ret(OpEscape, L, 0, 0, Vals);
return Ret;
}
OpType getOperation() const { return Operation; }
MCSymbol *getLabel() const { return Label; }
const MachineLocation &getDestination() const { return Destination; }
const MachineLocation &getSource() const { return Source; }
unsigned getRegister() const {
assert(Operation == OpDefCfa || Operation == OpOffset ||
Operation == OpRestore || Operation == OpUndefined ||
Operation == OpSameValue || Operation == OpDefCfaRegister ||
Operation == OpRelOffset);
return Register;
}
int getOffset() const {
assert(Operation == OpDefCfa || Operation == OpOffset ||
Operation == OpRelOffset || Operation == OpDefCfaOffset ||
Operation == OpAdjustCfaOffset);
return Offset;
}
const StringRef getValues() const {
assert(Operation == OpEscape);
return StringRef(&Values[0], Values.size());
}
};

32
llvm/lib/MC/MCDwarf.cpp
View File

@ -939,7 +939,7 @@ void FrameEmitterImpl::EmitCFIInstruction(MCStreamer &Streamer,
switch (Instr.getOperation()) {
case MCCFIInstruction::OpUndefined: {
unsigned Reg = Instr.getDestination().getReg();
unsigned Reg = Instr.getRegister();
if (VerboseAsm) {
Streamer.AddComment("DW_CFA_undefined");
Streamer.AddComment(Twine("Reg ") + Twine(Reg));
@ -950,7 +950,6 @@ void FrameEmitterImpl::EmitCFIInstruction(MCStreamer &Streamer,
}
case MCCFIInstruction::OpAdjustCfaOffset:
case MCCFIInstruction::OpDefCfaOffset: {
const MachineLocation &Src = Instr.getSource();
const bool IsRelative =
Instr.getOperation() == MCCFIInstruction::OpAdjustCfaOffset;
@ -959,9 +958,9 @@ void FrameEmitterImpl::EmitCFIInstruction(MCStreamer &Streamer,
Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_offset, 1);
if (IsRelative)
CFAOffset += Src.getOffset();
CFAOffset += Instr.getOffset();
else
CFAOffset = -Src.getOffset();
CFAOffset = -Instr.getOffset();
if (VerboseAsm)
Streamer.AddComment(Twine("Offset " + Twine(CFAOffset)));
@ -970,17 +969,15 @@ void FrameEmitterImpl::EmitCFIInstruction(MCStreamer &Streamer,
return;
}
case MCCFIInstruction::OpDefCfa: {
const MachineLocation &Src = Instr.getSource();
if (VerboseAsm)
Streamer.AddComment("DW_CFA_def_cfa");
Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa, 1);
if (VerboseAsm)
Streamer.AddComment(Twine("Reg ") + Twine(Src.getReg()));
Streamer.EmitULEB128IntValue(Src.getReg());
Streamer.AddComment(Twine("Reg ") + Twine(Instr.getRegister()));
Streamer.EmitULEB128IntValue(Instr.getRegister());
CFAOffset = -Src.getOffset();
CFAOffset = -Instr.getOffset();
if (VerboseAsm)
Streamer.AddComment(Twine("Offset " + Twine(CFAOffset)));
@ -990,29 +987,24 @@ void FrameEmitterImpl::EmitCFIInstruction(MCStreamer &Streamer,
}
case MCCFIInstruction::OpDefCfaRegister: {
const MachineLocation &Dst = Instr.getDestination();
assert(Dst.isReg() && "Machine move not supported yet.");
if (VerboseAsm)
Streamer.AddComment("DW_CFA_def_cfa_register");
Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_register, 1);
if (VerboseAsm)
Streamer.AddComment(Twine("Reg ") + Twine(Dst.getReg()));
Streamer.EmitULEB128IntValue(Dst.getReg());
Streamer.AddComment(Twine("Reg ") + Twine(Instr.getRegister()));
Streamer.EmitULEB128IntValue(Instr.getRegister());
return;
}
case MCCFIInstruction::OpOffset:
case MCCFIInstruction::OpRelOffset: {
const MachineLocation &Dst = Instr.getDestination();
const MachineLocation &Src = Instr.getSource();
const bool IsRelative =
Instr.getOperation() == MCCFIInstruction::OpRelOffset;
unsigned Reg = Src.getReg();
int Offset = Dst.getOffset();
unsigned Reg = Instr.getRegister();
int Offset = Instr.getOffset();
if (IsRelative)
Offset -= CFAOffset;
Offset = Offset / dataAlignmentFactor;
@ -1049,7 +1041,7 @@ void FrameEmitterImpl::EmitCFIInstruction(MCStreamer &Streamer,
Streamer.EmitIntValue(dwarf::DW_CFA_restore_state, 1);
return;
case MCCFIInstruction::OpSameValue: {
unsigned Reg = Instr.getDestination().getReg();
unsigned Reg = Instr.getRegister();
if (VerboseAsm) Streamer.AddComment("DW_CFA_same_value");
Streamer.EmitIntValue(dwarf::DW_CFA_same_value, 1);
if (VerboseAsm) Streamer.AddComment(Twine("Reg ") + Twine(Reg));
@ -1057,7 +1049,7 @@ void FrameEmitterImpl::EmitCFIInstruction(MCStreamer &Streamer,
return;
}
case MCCFIInstruction::OpRestore: {
unsigned Reg = Instr.getDestination().getReg();
unsigned Reg = Instr.getRegister();
if (VerboseAsm) {
Streamer.AddComment("DW_CFA_restore");
Streamer.AddComment(Twine("Reg ") + Twine(Reg));