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Rename isGVLazyPtr to isGVNonLazyPtr relocation. This represents Mac OS X

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indirect gv reference. Please don't call it lazy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58746 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-11-05 01:50:32 +00:00
parent c9eaef0bf2
commit c96a8e7df1
6 changed files with 62 additions and 60 deletions
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22
include/llvm/CodeGen/MachineRelocation.h
View File

@ -39,7 +39,7 @@ class MachineRelocation {
enum AddressType {
isResult, // Relocation has be transformed into its result pointer.
isGV, // The Target.GV field is valid.
isGVLazyPtr, // Relocation of a lazily resolved GV address.
isGVNonLazyPtr, // Relocation of a Mac OS X NonLazy indirect reference.
isBB, // Relocation of BB address.
isExtSym, // The Target.ExtSym field is valid.
isConstPool, // Relocation of constant pool address.
@ -56,7 +56,7 @@ class MachineRelocation {
union {
void *Result; // If this has been resolved to a resolved pointer
GlobalValue *GV; // If this is a pointer to a GV or a GV lazy ptr
GlobalValue *GV; // If this is a pointer to a GV or a GV nonlazy ptr
MachineBasicBlock *MBB; // If this is a pointer to a LLVM BB
const char *ExtSym; // If this is a pointer to a named symbol
unsigned Index; // Constant pool / jump table index
@ -96,9 +96,9 @@ public:
return Result;
}
/// MachineRelocation::getGVLazyPtr - Return a relocation entry for a
/// lazily resolved GlobalValue address.
static MachineRelocation getGVLazyPtr(intptr_t offset,
/// MachineRelocation::getGVNonLazyPtr - Return a relocation entry for a
/// Mac OS X non-lazy GlobalValue indirect reference.
static MachineRelocation getGVNonLazyPtr(intptr_t offset,
unsigned RelocationType,
GlobalValue *GV, intptr_t cst = 0,
bool NeedStub = 0,
@ -108,7 +108,7 @@ public:
Result.Offset = offset;
Result.ConstantVal = cst;
Result.TargetReloType = RelocationType;
Result.AddrType = isGVLazyPtr;
Result.AddrType = isGVNonLazyPtr;
Result.NeedStub = NeedStub;
Result.GOTRelative = GOTrelative;
Result.TargetResolve = false;
@ -221,10 +221,10 @@ public:
return AddrType == isGV;
}
/// isGlobalValueVLazyPtr - Return true if this relocation is the address
/// of a lazily resolved GlobalValue.
bool isGlobalValueLazyPtr() const {
return AddrType == isGVLazyPtr;
/// isGlobalValueNonLazyPtr - Return true if this relocation is the address
/// of a Mac OS X non-lazy indirect reference.
bool isGlobalValueNonLazyPtr() const {
return AddrType == isGVNonLazyPtr;
}
/// isBasicBlock - Return true if this relocation is a basic block reference.
@ -274,7 +274,7 @@ public:
/// getGlobalValue - If this is a global value reference, return the
/// referenced global.
GlobalValue *getGlobalValue() const {
assert((isGlobalValue() || isGlobalValueLazyPtr()) &&
assert((isGlobalValue() || isGlobalValueNonLazyPtr()) &&
"This is not a global value reference!");
return Target.GV;
}

11
include/llvm/Target/TargetJITInfo.h
View File

@ -40,11 +40,12 @@ namespace llvm {
///
virtual void replaceMachineCodeForFunction(void *Old, void *New) = 0;
/// emitGlobalValueLazyPtr - Use the specified MachineCodeEmitter object to
/// emit a lazy pointer which contains the address of the specified ptr.
virtual void *emitGlobalValueLazyPtr(const GlobalValue* GV, void *ptr,
MachineCodeEmitter &MCE) {
assert(0 && "This target doesn't implement emitGlobalValueLazyPtr!");
/// emitGlobalValueNonLazyPtr - Use the specified MachineCodeEmitter object
/// to emit a Mac OS X non-lazy pointer which contains the address of the
/// specified ptr.
virtual void *emitGlobalValueNonLazyPtr(const GlobalValue* GV, void *ptr,
MachineCodeEmitter &MCE) {
assert(0 && "This target doesn't implement emitGlobalValueNonLazyPtr!");
return 0;
}

44
lib/ExecutionEngine/JIT/JITEmitter.cpp
View File

@ -59,9 +59,9 @@ namespace {
/// corresponds to.
std::map<void*, Function*> StubToFunctionMap;
/// GlobalToLazyPtrMap - Keep track of the lazy pointer created for a
/// GlobalToNonLazyPtrMap - Keep track of the lazy pointer created for a
/// particular GlobalVariable so that we can reuse them if necessary.
std::map<GlobalValue*, void*> GlobalToLazyPtrMap;
std::map<GlobalValue*, void*> GlobalToNonLazyPtrMap;
public:
std::map<Function*, void*>& getFunctionToStubMap(const MutexGuard& locked) {
@ -75,9 +75,9 @@ namespace {
}
std::map<GlobalValue*, void*>&
getGlobalToLazyPtrMap(const MutexGuard& locked) {
getGlobalToNonLazyPtrMap(const MutexGuard& locked) {
assert(locked.holds(TheJIT->lock));
return GlobalToLazyPtrMap;
return GlobalToNonLazyPtrMap;
}
};
@ -120,9 +120,9 @@ namespace {
/// specified address, created lazily on demand.
void *getExternalFunctionStub(void *FnAddr);
/// getGlobalValueLazyPtr - Return a lazy pointer containing the specified
/// GV address.
void *getGlobalValueLazyPtr(GlobalValue *V, void *GVAddress);
/// getGlobalValueNonLazyPtr - Return a non-lazy pointer containing the
/// specified GV address.
void *getGlobalValueNonLazyPtr(GlobalValue *V, void *GVAddress);
/// AddCallbackAtLocation - If the target is capable of rewriting an
/// instruction without the use of a stub, record the location of the use so
@ -184,23 +184,23 @@ void *JITResolver::getFunctionStub(Function *F) {
return Stub;
}
/// getGlobalValueLazyPtr - Return a lazy pointer containing the specified
/// getGlobalValueNonLazyPtr - Return a lazy pointer containing the specified
/// GV address.
void *JITResolver::getGlobalValueLazyPtr(GlobalValue *GV, void *GVAddress) {
void *JITResolver::getGlobalValueNonLazyPtr(GlobalValue *GV, void *GVAddress) {
MutexGuard locked(TheJIT->lock);
// If we already have a stub for this global variable, recycle it.
void *&LazyPtr = state.getGlobalToLazyPtrMap(locked)[GV];
if (LazyPtr) return LazyPtr;
void *&NonLazyPtr = state.getGlobalToNonLazyPtrMap(locked)[GV];
if (NonLazyPtr) return NonLazyPtr;
// Otherwise, codegen a new lazy pointer.
LazyPtr = TheJIT->getJITInfo().emitGlobalValueLazyPtr(GV, GVAddress,
*TheJIT->getCodeEmitter());
NonLazyPtr = TheJIT->getJITInfo().emitGlobalValueNonLazyPtr(GV, GVAddress,
*TheJIT->getCodeEmitter());
DOUT << "JIT: Stub emitted at [" << LazyPtr << "] for GV '"
DOUT << "JIT: Stub emitted at [" << NonLazyPtr << "] for GV '"
<< GV->getName() << "'\n";
return LazyPtr;
return NonLazyPtr;
}
/// getExternalFunctionStub - Return a stub for the function at the
@ -570,8 +570,8 @@ namespace {
private:
void *getPointerToGlobal(GlobalValue *GV, void *Reference, bool NoNeedStub);
void *getPointerToGVLazyPtr(GlobalValue *V, void *Reference,
bool NoNeedStub);
void *getPointerToGVNonLazyPtr(GlobalValue *V, void *Reference,
bool NoNeedStub);
unsigned addSizeOfGlobal(const GlobalVariable *GV, unsigned Size);
unsigned addSizeOfGlobalsInConstantVal(const Constant *C, unsigned Size);
unsigned addSizeOfGlobalsInInitializer(const Constant *Init, unsigned Size);
@ -613,13 +613,13 @@ void *JITEmitter::getPointerToGlobal(GlobalValue *V, void *Reference,
return Resolver.getFunctionStub(F);
}
void *JITEmitter::getPointerToGVLazyPtr(GlobalValue *V, void *Reference,
void *JITEmitter::getPointerToGVNonLazyPtr(GlobalValue *V, void *Reference,
bool DoesntNeedStub) {
// Make sure GV is emitted first.
// FIXME: For now, if the GV is an external function we force the JIT to
// compile it so the lazy pointer will contain the fully resolved address.
// compile it so the non-lazy pointer will contain the fully resolved address.
void *GVAddress = getPointerToGlobal(V, Reference, true);
return Resolver.getGlobalValueLazyPtr(V, GVAddress);
return Resolver.getGlobalValueNonLazyPtr(V, GVAddress);
}
static unsigned GetConstantPoolSizeInBytes(MachineConstantPool *MCP) {
@ -887,8 +887,8 @@ bool JITEmitter::finishFunction(MachineFunction &F) {
ResultPtr = getPointerToGlobal(MR.getGlobalValue(),
BufferBegin+MR.getMachineCodeOffset(),
MR.doesntNeedStub());
} else if (MR.isGlobalValueLazyPtr()) {
ResultPtr = getPointerToGVLazyPtr(MR.getGlobalValue(),
} else if (MR.isGlobalValueNonLazyPtr()) {
ResultPtr = getPointerToGVNonLazyPtr(MR.getGlobalValue(),
BufferBegin+MR.getMachineCodeOffset(),
MR.doesntNeedStub());
} else if (MR.isBasicBlock()) {

32
lib/Target/X86/X86CodeEmitter.cpp
View File

@ -73,7 +73,7 @@ namespace {
void emitPCRelativeBlockAddress(MachineBasicBlock *MBB);
void emitGlobalAddress(GlobalValue *GV, unsigned Reloc,
intptr_t Disp = 0, intptr_t PCAdj = 0,
bool NeedStub = false, bool IsLazy = false);
bool NeedStub = false, bool IsNonLazy = false);
void emitExternalSymbolAddress(const char *ES, unsigned Reloc);
void emitConstPoolAddress(unsigned CPI, unsigned Reloc, intptr_t Disp = 0,
intptr_t PCAdj = 0);
@ -94,7 +94,7 @@ namespace {
unsigned getX86RegNum(unsigned RegNo) const;
bool gvNeedsLazyPtr(const GlobalValue *GV);
bool gvNeedsNonLazyPtr(const GlobalValue *GV);
};
char Emitter::ID = 0;
}
@ -155,15 +155,15 @@ void Emitter::emitGlobalAddress(GlobalValue *GV, unsigned Reloc,
intptr_t Disp /* = 0 */,
intptr_t PCAdj /* = 0 */,
bool NeedStub /* = false */,
bool isLazy /* = false */) {
bool isNonLazy /* = false */) {
intptr_t RelocCST = 0;
if (Reloc == X86::reloc_picrel_word)
RelocCST = PICBaseOffset;
else if (Reloc == X86::reloc_pcrel_word)
RelocCST = PCAdj;
MachineRelocation MR = isLazy
? MachineRelocation::getGVLazyPtr(MCE.getCurrentPCOffset(), Reloc,
GV, RelocCST, NeedStub)
MachineRelocation MR = isNonLazy
? MachineRelocation::getGVNonLazyPtr(MCE.getCurrentPCOffset(), Reloc,
GV, RelocCST, NeedStub)
: MachineRelocation::getGV(MCE.getCurrentPCOffset(), Reloc,
GV, RelocCST, NeedStub);
MCE.addRelocation(MR);
@ -263,8 +263,8 @@ static bool isDisp8(int Value) {
return Value == (signed char)Value;
}
bool Emitter::gvNeedsLazyPtr(const GlobalValue *GV) {
// For Darwin, simulate the linktime GOT by using the same lazy-pointer
bool Emitter::gvNeedsNonLazyPtr(const GlobalValue *GV) {
// For Darwin, simulate the linktime GOT by using the same non-lazy-pointer
// mechanism as 32-bit mode.
return (!Is64BitMode || TM.getSubtarget<X86Subtarget>().isTargetDarwin()) &&
TM.getSubtarget<X86Subtarget>().GVRequiresExtraLoad(GV, TM, false);
@ -289,9 +289,9 @@ void Emitter::emitDisplacementField(const MachineOperand *RelocOp,
unsigned rt = Is64BitMode ? X86::reloc_pcrel_word
: (IsPIC ? X86::reloc_picrel_word : X86::reloc_absolute_word);
bool NeedStub = isa<Function>(RelocOp->getGlobal());
bool isLazy = gvNeedsLazyPtr(RelocOp->getGlobal());
bool isNonLazy = gvNeedsNonLazyPtr(RelocOp->getGlobal());
emitGlobalAddress(RelocOp->getGlobal(), rt, RelocOp->getOffset(),
PCAdj, NeedStub, isLazy);
PCAdj, NeedStub, isNonLazy);
} else if (RelocOp->isCPI()) {
unsigned rt = Is64BitMode ? X86::reloc_pcrel_word : X86::reloc_picrel_word;
emitConstPoolAddress(RelocOp->getIndex(), rt,
@ -610,9 +610,9 @@ void Emitter::emitInstruction(const MachineInstr &MI,
rt = X86::reloc_absolute_dword; // FIXME: add X86II flag?
if (MO1.isGlobal()) {
bool NeedStub = isa<Function>(MO1.getGlobal());
bool isLazy = gvNeedsLazyPtr(MO1.getGlobal());
bool isNonLazy = gvNeedsNonLazyPtr(MO1.getGlobal());
emitGlobalAddress(MO1.getGlobal(), rt, MO1.getOffset(), 0,
NeedStub, isLazy);
NeedStub, isNonLazy);
} else if (MO1.isSymbol())
emitExternalSymbolAddress(MO1.getSymbolName(), rt);
else if (MO1.isCPI())
@ -688,9 +688,9 @@ void Emitter::emitInstruction(const MachineInstr &MI,
rt = X86::reloc_absolute_word; // FIXME: add X86II flag?
if (MO1.isGlobal()) {
bool NeedStub = isa<Function>(MO1.getGlobal());
bool isLazy = gvNeedsLazyPtr(MO1.getGlobal());
bool isNonLazy = gvNeedsNonLazyPtr(MO1.getGlobal());
emitGlobalAddress(MO1.getGlobal(), rt, MO1.getOffset(), 0,
NeedStub, isLazy);
NeedStub, isNonLazy);
} else if (MO1.isSymbol())
emitExternalSymbolAddress(MO1.getSymbolName(), rt);
else if (MO1.isCPI())
@ -726,9 +726,9 @@ void Emitter::emitInstruction(const MachineInstr &MI,
rt = X86::reloc_absolute_word; // FIXME: add X86II flag?
if (MO.isGlobal()) {
bool NeedStub = isa<Function>(MO.getGlobal());
bool isLazy = gvNeedsLazyPtr(MO.getGlobal());
bool isNonLazy = gvNeedsNonLazyPtr(MO.getGlobal());
emitGlobalAddress(MO.getGlobal(), rt, MO.getOffset(), 0,
NeedStub, isLazy);
NeedStub, isNonLazy);
} else if (MO.isSymbol())
emitExternalSymbolAddress(MO.getSymbolName(), rt);
else if (MO.isCPI())

4
lib/Target/X86/X86JITInfo.cpp
View File

@ -413,8 +413,8 @@ X86JITInfo::getLazyResolverFunction(JITCompilerFn F) {
return X86CompilationCallback;
}
void *X86JITInfo::emitGlobalValueLazyPtr(const GlobalValue* GV, void *ptr,
MachineCodeEmitter &MCE) {
void *X86JITInfo::emitGlobalValueNonLazyPtr(const GlobalValue* GV, void *ptr,
MachineCodeEmitter &MCE) {
#if defined (X86_64_JIT)
MCE.startFunctionStub(GV, 8, 8);
MCE.emitWordLE((unsigned)(intptr_t)ptr);

9
lib/Target/X86/X86JITInfo.h
View File

@ -37,10 +37,11 @@ namespace llvm {
///
virtual void replaceMachineCodeForFunction(void *Old, void *New);
/// emitGlobalValueLazyPtr - Use the specified MachineCodeEmitter object to
/// emit a lazy pointer which contains the address of the specified ptr.
virtual void *emitGlobalValueLazyPtr(const GlobalValue* GV, void *ptr,
MachineCodeEmitter &MCE);
/// emitGlobalValueNonLazyPtr - Use the specified MachineCodeEmitter object
/// to emit a Mac OS X non-lazy pointer which contains the address of the
/// specified ptr.
virtual void *emitGlobalValueNonLazyPtr(const GlobalValue* GV, void *ptr,
MachineCodeEmitter &MCE);
/// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
/// small native function that simply calls the function at the specified