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Move SLEB/ULEB size calculation routines from AsmPrinter to TargetAsmInfo. This makes JIT asmprinter-free.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54843 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2008-08-16 12:57:46 +00:00
parent d0c1e29aec
commit ffe31d7bf1
6 changed files with 474 additions and 476 deletions
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8
include/llvm/CodeGen/AsmPrinter.h
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@ -212,18 +212,10 @@ namespace llvm {
/// representing an unsigned leb128 value.
void PrintULEB128(unsigned Value) const;
/// SizeULEB128 - Compute the number of bytes required for an unsigned
/// leb128 value.
static unsigned SizeULEB128(unsigned Value);
/// PrintSLEB128 - Print a series of hexidecimal values(separated by commas)
/// representing a signed leb128 value.
void PrintSLEB128(int Value) const;
/// SizeSLEB128 - Compute the number of bytes required for a signed leb128
/// value.
static unsigned SizeSLEB128(int Value);
//===------------------------------------------------------------------===//
// Emission and print routines
//

10
include/llvm/Target/TargetAsmInfo.h
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@ -570,6 +570,16 @@ namespace llvm {
virtual const Section* SelectSectionForMachineConst(const Type *Ty) const;
/// getSLEB128Size - Compute the number of bytes required for a signed
/// leb128 value.
static unsigned getSLEB128Size(int Value);
/// getULEB128Size - Compute the number of bytes required for an unsigned
/// leb128 value.
static unsigned getULEB128Size(unsigned Value);
// Accessors.
//
const char *getTextSection() const {

29
lib/CodeGen/AsmPrinter.cpp
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@ -493,23 +493,12 @@ void AsmPrinter::PrintULEB128(unsigned Value) const {
} while (Value);
}
/// SizeULEB128 - Compute the number of bytes required for an unsigned leb128
/// value.
unsigned AsmPrinter::SizeULEB128(unsigned Value) {
unsigned Size = 0;
do {
Value >>= 7;
Size += sizeof(int8_t);
} while (Value);
return Size;
}
/// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
/// representing a signed leb128 value.
void AsmPrinter::PrintSLEB128(int Value) const {
int Sign = Value >> (8 * sizeof(Value) - 1);
bool IsMore;
do {
unsigned Byte = Value & 0x7f;
Value >>= 7;
@ -520,22 +509,6 @@ void AsmPrinter::PrintSLEB128(int Value) const {
} while (IsMore);
}
/// SizeSLEB128 - Compute the number of bytes required for a signed leb128
/// value.
unsigned AsmPrinter::SizeSLEB128(int Value) {
unsigned Size = 0;
int Sign = Value >> (8 * sizeof(Value) - 1);
bool IsMore;
do {
unsigned Byte = Value & 0x7f;
Value >>= 7;
IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
Size += sizeof(int8_t);
} while (IsMore);
return Size;
}
//===--------------------------------------------------------------------===//
// Emission and print routines
//

801
lib/CodeGen/DwarfWriter.cpp
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File diff suppressed because it is too large Load Diff

79
lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp
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@ -16,7 +16,6 @@
#include "JITDwarfEmitter.h"
#include "llvm/Function.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineCodeEmitter.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineLocation.h"
@ -244,7 +243,7 @@ unsigned char* JITDwarfEmitter::EmitExceptionTable(MachineFunction* MF,
for(std::vector<unsigned>::const_iterator I = FilterIds.begin(),
E = FilterIds.end(); I != E; ++I) {
FilterOffsets.push_back(Offset);
Offset -= AsmPrinter::SizeULEB128(*I);
Offset -= TargetAsmInfo::getULEB128Size(*I);
}
// Compute the actions table and gather the first action index for each
@ -269,10 +268,10 @@ unsigned char* JITDwarfEmitter::EmitExceptionTable(MachineFunction* MF,
const unsigned SizePrevIds = LandingPads[i-1]->TypeIds.size();
assert(Actions.size());
PrevAction = &Actions.back();
SizeAction = AsmPrinter::SizeSLEB128(PrevAction->NextAction) +
AsmPrinter::SizeSLEB128(PrevAction->ValueForTypeID);
SizeAction = TargetAsmInfo::getSLEB128Size(PrevAction->NextAction) +
TargetAsmInfo::getSLEB128Size(PrevAction->ValueForTypeID);
for (unsigned j = NumShared; j != SizePrevIds; ++j) {
SizeAction -= AsmPrinter::SizeSLEB128(PrevAction->ValueForTypeID);
SizeAction -= TargetAsmInfo::getSLEB128Size(PrevAction->ValueForTypeID);
SizeAction += -PrevAction->NextAction;
PrevAction = PrevAction->Previous;
}
@ -283,10 +282,10 @@ unsigned char* JITDwarfEmitter::EmitExceptionTable(MachineFunction* MF,
int TypeID = TypeIds[I];
assert(-1-TypeID < (int)FilterOffsets.size() && "Unknown filter id!");
int ValueForTypeID = TypeID < 0 ? FilterOffsets[-1 - TypeID] : TypeID;
unsigned SizeTypeID = AsmPrinter::SizeSLEB128(ValueForTypeID);
unsigned SizeTypeID = TargetAsmInfo::getSLEB128Size(ValueForTypeID);
int NextAction = SizeAction ? -(SizeAction + SizeTypeID) : 0;
SizeAction = SizeTypeID + AsmPrinter::SizeSLEB128(NextAction);
SizeAction = SizeTypeID + TargetAsmInfo::getSLEB128Size(NextAction);
SizeSiteActions += SizeAction;
ActionEntry Action = {ValueForTypeID, NextAction, PrevAction};
@ -389,18 +388,18 @@ unsigned char* JITDwarfEmitter::EmitExceptionTable(MachineFunction* MF,
sizeof(int32_t) + // Site length.
sizeof(int32_t)); // Landing pad.
for (unsigned i = 0, e = CallSites.size(); i < e; ++i)
SizeSites += AsmPrinter::SizeULEB128(CallSites[i].Action);
SizeSites += TargetAsmInfo::getULEB128Size(CallSites[i].Action);
unsigned SizeTypes = TypeInfos.size() * TD->getPointerSize();
unsigned TypeOffset = sizeof(int8_t) + // Call site format
// Call-site table length
AsmPrinter::SizeULEB128(SizeSites) +
TargetAsmInfo::getULEB128Size(SizeSites) +
SizeSites + SizeActions + SizeTypes;
unsigned TotalSize = sizeof(int8_t) + // LPStart format
sizeof(int8_t) + // TType format
AsmPrinter::SizeULEB128(TypeOffset) + // TType base offset
TargetAsmInfo::getULEB128Size(TypeOffset) + // TType base offset
TypeOffset;
unsigned SizeAlign = (4 - TotalSize) & 3;
@ -684,10 +683,10 @@ JITDwarfEmitter::GetEHFrameSizeInBytes(const Function* Personality,
// If there is a personality and landing pads then point to the language
// specific data area in the exception table.
if (MMI->getPersonalityIndex()) {
FinalSize += AsmPrinter::SizeULEB128(4);
FinalSize += TargetAsmInfo::getULEB128Size(4);
FinalSize += PointerSize;
} else {
FinalSize += AsmPrinter::SizeULEB128(0);
FinalSize += TargetAsmInfo::getULEB128Size(0);
}
// Indicate locations of function specific callee saved registers in
@ -715,24 +714,24 @@ unsigned JITDwarfEmitter::GetCommonEHFrameSizeInBytes(const Function* Personalit
FinalSize += 4;
FinalSize += 1;
FinalSize += Personality ? 5 : 3; // "zPLR" or "zR"
FinalSize += AsmPrinter::SizeULEB128(1);
FinalSize += AsmPrinter::SizeSLEB128(stackGrowth);
FinalSize += TargetAsmInfo::getULEB128Size(1);
FinalSize += TargetAsmInfo::getSLEB128Size(stackGrowth);
FinalSize += 1;
if (Personality) {
FinalSize += AsmPrinter::SizeULEB128(7);
FinalSize += TargetAsmInfo::getULEB128Size(7);
// Encoding
FinalSize+= 1;
//Personality
FinalSize += PointerSize;
FinalSize += AsmPrinter::SizeULEB128(dwarf::DW_EH_PE_pcrel);
FinalSize += AsmPrinter::SizeULEB128(dwarf::DW_EH_PE_pcrel);
FinalSize += TargetAsmInfo::getULEB128Size(dwarf::DW_EH_PE_pcrel);
FinalSize += TargetAsmInfo::getULEB128Size(dwarf::DW_EH_PE_pcrel);
} else {
FinalSize += AsmPrinter::SizeULEB128(1);
FinalSize += AsmPrinter::SizeULEB128(dwarf::DW_EH_PE_pcrel);
FinalSize += TargetAsmInfo::getULEB128Size(1);
FinalSize += TargetAsmInfo::getULEB128Size(dwarf::DW_EH_PE_pcrel);
}
std::vector<MachineMove> Moves;
@ -784,12 +783,12 @@ JITDwarfEmitter::GetFrameMovesSizeInBytes(intptr_t BaseLabelPtr,
} else {
++FinalSize;
unsigned RegNum = RI->getDwarfRegNum(Src.getRegister(), true);
FinalSize += AsmPrinter::SizeULEB128(RegNum);
FinalSize += TargetAsmInfo::getULEB128Size(RegNum);
}
int Offset = -Src.getOffset();
FinalSize += AsmPrinter::SizeULEB128(Offset);
FinalSize += TargetAsmInfo::getULEB128Size(Offset);
} else {
assert(0 && "Machine move no supported yet.");
}
@ -798,7 +797,7 @@ JITDwarfEmitter::GetFrameMovesSizeInBytes(intptr_t BaseLabelPtr,
if (Dst.isRegister()) {
++FinalSize;
unsigned RegNum = RI->getDwarfRegNum(Dst.getRegister(), true);
FinalSize += AsmPrinter::SizeULEB128(RegNum);
FinalSize += TargetAsmInfo::getULEB128Size(RegNum);
} else {
assert(0 && "Machine move no supported yet.");
}
@ -808,15 +807,15 @@ JITDwarfEmitter::GetFrameMovesSizeInBytes(intptr_t BaseLabelPtr,
if (Offset < 0) {
++FinalSize;
FinalSize += AsmPrinter::SizeULEB128(Reg);
FinalSize += AsmPrinter::SizeSLEB128(Offset);
FinalSize += TargetAsmInfo::getULEB128Size(Reg);
FinalSize += TargetAsmInfo::getSLEB128Size(Offset);
} else if (Reg < 64) {
++FinalSize;
FinalSize += AsmPrinter::SizeULEB128(Offset);
FinalSize += TargetAsmInfo::getULEB128Size(Offset);
} else {
++FinalSize;
FinalSize += AsmPrinter::SizeULEB128(Reg);
FinalSize += AsmPrinter::SizeULEB128(Offset);
FinalSize += TargetAsmInfo::getULEB128Size(Reg);
FinalSize += TargetAsmInfo::getULEB128Size(Offset);
}
}
}
@ -859,7 +858,7 @@ JITDwarfEmitter::GetExceptionTableSizeInBytes(MachineFunction* MF) const {
for(std::vector<unsigned>::const_iterator I = FilterIds.begin(),
E = FilterIds.end(); I != E; ++I) {
FilterOffsets.push_back(Offset);
Offset -= AsmPrinter::SizeULEB128(*I);
Offset -= TargetAsmInfo::getULEB128Size(*I);
}
// Compute the actions table and gather the first action index for each
@ -884,10 +883,10 @@ JITDwarfEmitter::GetExceptionTableSizeInBytes(MachineFunction* MF) const {
const unsigned SizePrevIds = LandingPads[i-1]->TypeIds.size();
assert(Actions.size());
PrevAction = &Actions.back();
SizeAction = AsmPrinter::SizeSLEB128(PrevAction->NextAction) +
AsmPrinter::SizeSLEB128(PrevAction->ValueForTypeID);
SizeAction = TargetAsmInfo::getSLEB128Size(PrevAction->NextAction) +
TargetAsmInfo::getSLEB128Size(PrevAction->ValueForTypeID);
for (unsigned j = NumShared; j != SizePrevIds; ++j) {
SizeAction -= AsmPrinter::SizeSLEB128(PrevAction->ValueForTypeID);
SizeAction -= TargetAsmInfo::getSLEB128Size(PrevAction->ValueForTypeID);
SizeAction += -PrevAction->NextAction;
PrevAction = PrevAction->Previous;
}
@ -898,10 +897,10 @@ JITDwarfEmitter::GetExceptionTableSizeInBytes(MachineFunction* MF) const {
int TypeID = TypeIds[I];
assert(-1-TypeID < (int)FilterOffsets.size() && "Unknown filter id!");
int ValueForTypeID = TypeID < 0 ? FilterOffsets[-1 - TypeID] : TypeID;
unsigned SizeTypeID = AsmPrinter::SizeSLEB128(ValueForTypeID);
unsigned SizeTypeID = TargetAsmInfo::getSLEB128Size(ValueForTypeID);
int NextAction = SizeAction ? -(SizeAction + SizeTypeID) : 0;
SizeAction = SizeTypeID + AsmPrinter::SizeSLEB128(NextAction);
SizeAction = SizeTypeID + TargetAsmInfo::getSLEB128Size(NextAction);
SizeSiteActions += SizeAction;
ActionEntry Action = {ValueForTypeID, NextAction, PrevAction};
@ -1004,18 +1003,18 @@ JITDwarfEmitter::GetExceptionTableSizeInBytes(MachineFunction* MF) const {
sizeof(int32_t) + // Site length.
sizeof(int32_t)); // Landing pad.
for (unsigned i = 0, e = CallSites.size(); i < e; ++i)
SizeSites += AsmPrinter::SizeULEB128(CallSites[i].Action);
SizeSites += TargetAsmInfo::getULEB128Size(CallSites[i].Action);
unsigned SizeTypes = TypeInfos.size() * TD->getPointerSize();
unsigned TypeOffset = sizeof(int8_t) + // Call site format
// Call-site table length
AsmPrinter::SizeULEB128(SizeSites) +
TargetAsmInfo::getULEB128Size(SizeSites) +
SizeSites + SizeActions + SizeTypes;
unsigned TotalSize = sizeof(int8_t) + // LPStart format
sizeof(int8_t) + // TType format
AsmPrinter::SizeULEB128(TypeOffset) + // TType base offset
TargetAsmInfo::getULEB128Size(TypeOffset) + // TType base offset
TypeOffset;
unsigned SizeAlign = (4 - TotalSize) & 3;
@ -1053,7 +1052,7 @@ JITDwarfEmitter::GetExceptionTableSizeInBytes(MachineFunction* MF) const {
// Asm->EOL("Landing pad");
FinalSize += PointerSize;
FinalSize += AsmPrinter::SizeULEB128(S.Action);
FinalSize += TargetAsmInfo::getULEB128Size(S.Action);
// Asm->EOL("Action");
}
@ -1062,9 +1061,9 @@ JITDwarfEmitter::GetExceptionTableSizeInBytes(MachineFunction* MF) const {
ActionEntry &Action = Actions[I];
//Asm->EOL("TypeInfo index");
FinalSize += AsmPrinter::SizeSLEB128(Action.ValueForTypeID);
FinalSize += TargetAsmInfo::getSLEB128Size(Action.ValueForTypeID);
//Asm->EOL("Next action");
FinalSize += AsmPrinter::SizeSLEB128(Action.NextAction);
FinalSize += TargetAsmInfo::getSLEB128Size(Action.NextAction);
}
// Emit the type ids.
@ -1076,7 +1075,7 @@ JITDwarfEmitter::GetExceptionTableSizeInBytes(MachineFunction* MF) const {
// Emit the filter typeids.
for (unsigned j = 0, M = FilterIds.size(); j < M; ++j) {
unsigned TypeID = FilterIds[j];
FinalSize += AsmPrinter::SizeULEB128(TypeID);
FinalSize += TargetAsmInfo::getULEB128Size(TypeID);
//Asm->EOL("Filter TypeInfo index");
}

23
lib/Target/TargetAsmInfo.cpp
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@ -389,3 +389,26 @@ TargetAsmInfo::getSectionFlags(unsigned Flags) const {
return I->second;
}
unsigned TargetAsmInfo::getULEB128Size(unsigned Value) {
unsigned Size = 0;
do {
Value >>= 7;
Size += sizeof(int8_t);
} while (Value);
return Size;
}
unsigned TargetAsmInfo::getSLEB128Size(int Value) {
unsigned Size = 0;
int Sign = Value >> (8 * sizeof(Value) - 1);
bool IsMore;
do {
unsigned Byte = Value & 0x7f;
Value >>= 7;
IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
Size += sizeof(int8_t);
} while (IsMore);
return Size;
}