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Cosmetic changes, as suggested by Evan. No functionality changes.

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llvm-svn: 49993
This commit is contained in:
Nicolas Geoffray 2008-04-20 17:44:19 +00:00
parent 3453a89a31
commit c80229e1c7
4 changed files with 81 additions and 104 deletions
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4
include/llvm/ExecutionEngine/JITMemoryManager.h
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@ -54,9 +54,9 @@ public:
/// return a pointer to its base.
virtual unsigned char *getGOTBase() const = 0;
/// RequireSize - If the memory manager requires to know the size of the
/// NeedsExactSize - If the memory manager requires to know the size of the
/// objects to be emitted
bool RequiresSize() const {
bool NeedsExactSize() const {
return SizeRequired;
}

146
lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp
View File

@ -61,8 +61,9 @@ unsigned char* JITDwarfEmitter::EmitDwarfTable(MachineFunction& F,
}
void JITDwarfEmitter::EmitFrameMoves(intptr_t BaseLabelPtr,
const std::vector<MachineMove> &Moves) {
void
JITDwarfEmitter::EmitFrameMoves(intptr_t BaseLabelPtr,
const std::vector<MachineMove> &Moves) const {
unsigned PointerSize = TD->getPointerSize();
int stackGrowth = stackGrowthDirection == TargetFrameInfo::StackGrowsUp ?
PointerSize : -PointerSize;
@ -206,7 +207,7 @@ struct CallSiteEntry {
unsigned char* JITDwarfEmitter::EmitExceptionTable(MachineFunction* MF,
unsigned char* StartFunction,
unsigned char* EndFunction) {
unsigned char* EndFunction) const {
// Map all labels and get rid of any dead landing pads.
MMI->TidyLandingPads();
@ -517,7 +518,8 @@ unsigned char* JITDwarfEmitter::EmitExceptionTable(MachineFunction* MF,
return DwarfExceptionTable;
}
unsigned char* JITDwarfEmitter::EmitCommonEHFrame(const Function* Personality) {
unsigned char*
JITDwarfEmitter::EmitCommonEHFrame(const Function* Personality) const {
unsigned PointerSize = TD->getPointerSize();
int stackGrowth = stackGrowthDirection == TargetFrameInfo::StackGrowsUp ?
PointerSize : -PointerSize;
@ -570,11 +572,12 @@ unsigned char* JITDwarfEmitter::EmitCommonEHFrame(const Function* Personality) {
}
unsigned char* JITDwarfEmitter::EmitEHFrame(const Function* Personality,
unsigned char* StartCommonPtr,
unsigned char* StartFunction,
unsigned char* EndFunction,
unsigned char* ExceptionTable) {
unsigned char*
JITDwarfEmitter::EmitEHFrame(const Function* Personality,
unsigned char* StartCommonPtr,
unsigned char* StartFunction,
unsigned char* EndFunction,
unsigned char* ExceptionTable) const {
unsigned PointerSize = TD->getPointerSize();
// EH frame header.
@ -635,7 +638,7 @@ unsigned char* JITDwarfEmitter::EmitEHFrame(const Function* Personality,
return StartEHPtr;
}
unsigned JITDwarfEmitter::GetDwarfTableSize(MachineFunction& F,
unsigned JITDwarfEmitter::GetDwarfTableSizeInBytes(MachineFunction& F,
MachineCodeEmitter& mce,
unsigned char* StartFunction,
unsigned char* EndFunction) {
@ -647,56 +650,26 @@ unsigned JITDwarfEmitter::GetDwarfTableSize(MachineFunction& F,
MCE = &mce;
unsigned FinalSize = 0;
FinalSize += GetExceptionTableSize(&F);
FinalSize += GetExceptionTableSizeInBytes(&F);
const std::vector<Function *> Personalities = MMI->getPersonalities();
FinalSize += GetCommonEHFrameSize(Personalities[MMI->getPersonalityIndex()]);
FinalSize += GetCommonEHFrameSizeInBytes(Personalities[MMI->getPersonalityIndex()]);
FinalSize += GetEHFrameSize(Personalities[MMI->getPersonalityIndex()], StartFunction);
FinalSize += GetEHFrameSizeInBytes(Personalities[MMI->getPersonalityIndex()], StartFunction);
return FinalSize;
}
/// AddAlignment - Add the specified alignment.
static void AddAlignment(unsigned& FinalSize, unsigned Alignment) {
/// RoundUpToAlign - Add the specified alignment to FinalSize and returns
/// the new value.
static unsigned RoundUpToAlign(unsigned FinalSize, unsigned Alignment) {
if (Alignment == 0) Alignment = 1;
FinalSize = (FinalSize + Alignment - 1) & ~(Alignment - 1);
return (FinalSize + Alignment - 1) & ~(Alignment - 1);
}
/// SizeULEB128Bytes - Gives the size of the ULEB128.
static unsigned SizeULEB128Bytes(unsigned Value) {
unsigned FinalSize = 0;
do {
Value >>= 7;
++FinalSize;
} while (Value);
return FinalSize;
}
/// SizeSLEB128Bytes - Gives the size of the SLEB128.
static unsigned SizeSLEB128Bytes(int Value) {
int Sign = Value >> (8 * sizeof(Value) - 1);
bool IsMore;
unsigned FinalSize = 0;
do {
unsigned char Byte = Value & 0x7f;
Value >>= 7;
IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
++FinalSize;
} while (IsMore);
return FinalSize;
}
/// SizeString - Gives the size of the string.
static unsigned SizeString(const std::string &String) {
return String.size() + 1;
}
unsigned JITDwarfEmitter::GetEHFrameSize(const Function* Personality,
unsigned char* StartFunction) {
unsigned
JITDwarfEmitter::GetEHFrameSizeInBytes(const Function* Personality,
unsigned char* StartFunction) const {
unsigned PointerSize = TD->getPointerSize();
unsigned FinalSize = 0;
// EH frame header.
@ -706,17 +679,18 @@ unsigned JITDwarfEmitter::GetEHFrameSize(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 += SizeULEB128Bytes(4);
FinalSize += AsmPrinter::SizeULEB128(4);
FinalSize += PointerSize;
} else {
FinalSize += SizeULEB128Bytes(0);
FinalSize += AsmPrinter::SizeULEB128(0);
}
// Indicate locations of function specific callee saved registers in
// frame.
FinalSize += GetFrameMovesSize((intptr_t)StartFunction, MMI->getFrameMoves());
FinalSize += GetFrameMovesSizeInBytes((intptr_t)StartFunction,
MMI->getFrameMoves());
AddAlignment(FinalSize, 4);
FinalSize = RoundUpToAlign(FinalSize, 4);
// Double zeroes for the unwind runtime
FinalSize += 2 * PointerSize;
@ -724,7 +698,8 @@ unsigned JITDwarfEmitter::GetEHFrameSize(const Function* Personality,
return FinalSize;
}
unsigned JITDwarfEmitter::GetCommonEHFrameSize(const Function* Personality) {
unsigned JITDwarfEmitter::GetCommonEHFrameSizeInBytes(const Function* Personality)
const {
unsigned PointerSize = TD->getPointerSize();
int stackGrowth = stackGrowthDirection == TargetFrameInfo::StackGrowsUp ?
@ -734,37 +709,37 @@ unsigned JITDwarfEmitter::GetCommonEHFrameSize(const Function* Personality) {
FinalSize += PointerSize;
FinalSize += 4;
FinalSize += 1;
FinalSize += SizeString(Personality ? "zPLR" : "zR");
FinalSize += SizeULEB128Bytes(1);
FinalSize += SizeSLEB128Bytes(stackGrowth);
FinalSize += Personality ? 5 : 3; // "zPLR" or "zR"
FinalSize += AsmPrinter::SizeULEB128(1);
FinalSize += AsmPrinter::SizeSLEB128(stackGrowth);
FinalSize += 1;
if (Personality) {
FinalSize += SizeULEB128Bytes(7);
FinalSize += AsmPrinter::SizeULEB128(7);
// Encoding
FinalSize+= 1;
//Personality
FinalSize += PointerSize;
FinalSize += SizeULEB128Bytes(dwarf::DW_EH_PE_pcrel);
FinalSize += SizeULEB128Bytes(dwarf::DW_EH_PE_pcrel);
FinalSize += AsmPrinter::SizeULEB128(dwarf::DW_EH_PE_pcrel);
FinalSize += AsmPrinter::SizeULEB128(dwarf::DW_EH_PE_pcrel);
} else {
FinalSize += SizeULEB128Bytes(1);
FinalSize += SizeULEB128Bytes(dwarf::DW_EH_PE_pcrel);
FinalSize += AsmPrinter::SizeULEB128(1);
FinalSize += AsmPrinter::SizeULEB128(dwarf::DW_EH_PE_pcrel);
}
std::vector<MachineMove> Moves;
RI->getInitialFrameState(Moves);
FinalSize += GetFrameMovesSize(0, Moves);
AddAlignment(FinalSize, 4);
FinalSize += GetFrameMovesSizeInBytes(0, Moves);
FinalSize = RoundUpToAlign(FinalSize, 4);
return FinalSize;
}
unsigned
JITDwarfEmitter::GetFrameMovesSize(intptr_t BaseLabelPtr,
const std::vector<MachineMove> &Moves) {
JITDwarfEmitter::GetFrameMovesSizeInBytes(intptr_t BaseLabelPtr,
const std::vector<MachineMove> &Moves) const {
unsigned PointerSize = TD->getPointerSize();
int stackGrowth = stackGrowthDirection == TargetFrameInfo::StackGrowsUp ?
PointerSize : -PointerSize;
@ -803,22 +778,22 @@ JITDwarfEmitter::GetFrameMovesSize(intptr_t BaseLabelPtr,
++FinalSize;
} else {
++FinalSize;
FinalSize +=
SizeULEB128Bytes(RI->getDwarfRegNum(Src.getRegister(), true));
unsigned RegNum = RI->getDwarfRegNum(Src.getRegister(), true);
FinalSize += AsmPrinter::SizeULEB128(RegNum);
}
int Offset = -Src.getOffset();
FinalSize += SizeULEB128Bytes(Offset);
FinalSize += AsmPrinter::SizeULEB128(Offset);
} else {
assert(0 && "Machine move no supported yet.");
}
} else if (Src.isRegister() &&
Src.getRegister() == MachineLocation::VirtualFP) {
if (Dst.isRegister()) {
++FinalSize;
FinalSize +=
SizeULEB128Bytes(RI->getDwarfRegNum(Dst.getRegister(), true));
++FinalSize;
unsigned RegNum = RI->getDwarfRegNum(Dst.getRegister(), true);
FinalSize += AsmPrinter::SizeULEB128(RegNum);
} else {
assert(0 && "Machine move no supported yet.");
}
@ -828,22 +803,23 @@ JITDwarfEmitter::GetFrameMovesSize(intptr_t BaseLabelPtr,
if (Offset < 0) {
++FinalSize;
FinalSize += SizeULEB128Bytes(Reg);
FinalSize += SizeSLEB128Bytes(Offset);
FinalSize += AsmPrinter::SizeULEB128(Reg);
FinalSize += AsmPrinter::SizeSLEB128(Offset);
} else if (Reg < 64) {
++FinalSize;
FinalSize += SizeULEB128Bytes(Offset);
FinalSize += AsmPrinter::SizeULEB128(Offset);
} else {
++FinalSize;
FinalSize += SizeULEB128Bytes(Reg);
FinalSize += SizeULEB128Bytes(Offset);
FinalSize += AsmPrinter::SizeULEB128(Reg);
FinalSize += AsmPrinter::SizeULEB128(Offset);
}
}
}
return FinalSize;
}
unsigned JITDwarfEmitter::GetExceptionTableSize(MachineFunction* MF) {
unsigned
JITDwarfEmitter::GetExceptionTableSizeInBytes(MachineFunction* MF) const {
unsigned FinalSize = 0;
// Map all labels and get rid of any dead landing pads.
@ -1040,7 +1016,7 @@ unsigned JITDwarfEmitter::GetExceptionTableSize(MachineFunction* MF) {
unsigned SizeAlign = (4 - TotalSize) & 3;
// Begin the exception table.
AddAlignment(FinalSize, 4);
FinalSize = RoundUpToAlign(FinalSize, 4);
for (unsigned i = 0; i != SizeAlign; ++i) {
++FinalSize;
}
@ -1072,7 +1048,7 @@ unsigned JITDwarfEmitter::GetExceptionTableSize(MachineFunction* MF) {
// Asm->EOL("Landing pad");
FinalSize += PointerSize;
FinalSize += SizeULEB128Bytes(S.Action);
FinalSize += AsmPrinter::SizeULEB128(S.Action);
// Asm->EOL("Action");
}
@ -1081,9 +1057,9 @@ unsigned JITDwarfEmitter::GetExceptionTableSize(MachineFunction* MF) {
ActionEntry &Action = Actions[I];
//Asm->EOL("TypeInfo index");
FinalSize += SizeSLEB128Bytes(Action.ValueForTypeID);
FinalSize += AsmPrinter::SizeSLEB128(Action.ValueForTypeID);
//Asm->EOL("Next action");
FinalSize += SizeSLEB128Bytes(Action.NextAction);
FinalSize += AsmPrinter::SizeSLEB128(Action.NextAction);
}
// Emit the type ids.
@ -1095,11 +1071,11 @@ unsigned JITDwarfEmitter::GetExceptionTableSize(MachineFunction* MF) {
// Emit the filter typeids.
for (unsigned j = 0, M = FilterIds.size(); j < M; ++j) {
unsigned TypeID = FilterIds[j];
FinalSize += SizeULEB128Bytes(TypeID);
FinalSize += AsmPrinter::SizeULEB128(TypeID);
//Asm->EOL("Filter TypeInfo index");
}
AddAlignment(FinalSize, 4);
FinalSize = RoundUpToAlign(FinalSize, 4);
return FinalSize;
}

29
lib/ExecutionEngine/JIT/JITDwarfEmitter.h
View File

@ -37,28 +37,29 @@ class JITDwarfEmitter {
unsigned char* EmitExceptionTable(MachineFunction* MF,
unsigned char* StartFunction,
unsigned char* EndFunction);
unsigned char* EndFunction) const;
void EmitFrameMoves(intptr_t BaseLabelPtr,
const std::vector<MachineMove> &Moves);
const std::vector<MachineMove> &Moves) const;
unsigned char* EmitCommonEHFrame(const Function* Personality);
unsigned char* EmitCommonEHFrame(const Function* Personality) const;
unsigned char* EmitEHFrame(const Function* Personality,
unsigned char* StartBufferPtr,
unsigned char* StartFunction,
unsigned char* EndFunction,
unsigned char* ExceptionTable);
unsigned char* ExceptionTable) const;
unsigned GetExceptionTableSize(MachineFunction* MF);
unsigned GetExceptionTableSizeInBytes(MachineFunction* MF) const;
unsigned GetFrameMovesSize(intptr_t BaseLabelPtr,
const std::vector<MachineMove> &Moves);
unsigned
GetFrameMovesSizeInBytes(intptr_t BaseLabelPtr,
const std::vector<MachineMove> &Moves) const;
unsigned GetCommonEHFrameSize(const Function* Personality);
unsigned GetCommonEHFrameSizeInBytes(const Function* Personality) const;
unsigned GetEHFrameSize(const Function* Personality,
unsigned char* StartFunction);
unsigned GetEHFrameSizeInBytes(const Function* Personality,
unsigned char* StartFunction) const;
public:
@ -70,10 +71,10 @@ public:
unsigned char* EndFunction);
unsigned GetDwarfTableSize(MachineFunction& F,
MachineCodeEmitter& MCE,
unsigned char* StartFunction,
unsigned char* EndFunction);
unsigned GetDwarfTableSizeInBytes(MachineFunction& F,
MachineCodeEmitter& MCE,
unsigned char* StartFunction,
unsigned char* EndFunction);
void setModuleInfo(MachineModuleInfo* Info) {
MMI = Info;

6
lib/ExecutionEngine/JIT/JITEmitter.cpp
View File

@ -630,7 +630,7 @@ static void AddAlignment(uintptr_t& Size, unsigned Alignment) {
void JITEmitter::startFunction(MachineFunction &F) {
uintptr_t ActualSize = 0;
if (MemMgr->RequiresSize()) {
if (MemMgr->NeedsExactSize()) {
const TargetInstrInfo* TII = F.getTarget().getInstrInfo();
MachineJumpTableInfo *MJTI = F.getJumpTableInfo();
MachineConstantPool *MCP = F.getConstantPool();
@ -776,8 +776,8 @@ bool JITEmitter::finishFunction(MachineFunction &F) {
SavedBufferEnd = BufferEnd;
SavedCurBufferPtr = CurBufferPtr;
if (MemMgr->RequiresSize()) {
ActualSize = DE->GetDwarfTableSize(F, *this, FnStart, FnEnd);
if (MemMgr->NeedsExactSize()) {
ActualSize = DE->GetDwarfTableSizeInBytes(F, *this, FnStart, FnEnd);
}
BufferBegin = CurBufferPtr = MemMgr->startExceptionTable(F.getFunction(),