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- Added option -relocation-model to set relocation model. Valid values include static, pic,

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dynamic-no-pic, and default.
PPC and x86 default is dynamic-no-pic for Darwin, pic for others.
- Removed options -enable-pic and -ppc-static.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26315 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-02-22 20:19:42 +00:00
parent 0420f2aaf9
commit 4c1aa86657
14 changed files with 95 additions and 53 deletions
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17
include/llvm/Target/TargetMachine.h
View File

@ -34,6 +34,16 @@ class PassManager;
class Pass;
class IntrinsicLowering;
// Relocation model types.
namespace Reloc {
enum Model {
Default,
Static,
PIC,
DynamicNoPIC
};
}
//===----------------------------------------------------------------------===//
///
/// TargetMachine - Primary interface to the complete machine description for
@ -135,6 +145,13 @@ public:
virtual const TargetSchedInfo *getSchedInfo() const { return 0; }
virtual const SparcV9RegInfo *getRegInfo() const { return 0; }
/// getRelocationModel - Returns the code generation relocation model. The
/// choices are static, PIC, and dynamic-no-pic, and target default.
static Reloc::Model getRelocationModel();
/// setRelocationModel - Sets the code generation relocation model.
static void setRelocationModel(Reloc::Model Model);
/// CodeGenFileType - These enums are meant to be passed into
/// addPassesToEmitFile to indicate what type of file to emit.
enum CodeGenFileType {

6
include/llvm/Target/TargetOptions.h
View File

@ -40,12 +40,6 @@ namespace llvm {
/// produce results that are "less precise" than IEEE allows. This includes
/// use of X86 instructions like FSIN and FCOS instead of libcalls.
extern bool UnsafeFPMath;
/// PICEnabled - This flag is enabled when the -enable-pic flag is specified
/// on the command line. When this flag is on, the code generator produces
/// position independant code.
extern bool PICEnabled;
} // End llvm namespace
#endif

1
lib/Target/PowerPC/PPC.h
View File

@ -31,7 +31,6 @@ FunctionPass *createPPCISelDag(TargetMachine &TM);
FunctionPass *createDarwinAsmPrinter(std::ostream &OS, TargetMachine &TM);
FunctionPass *createAIXAsmPrinter(std::ostream &OS, TargetMachine &TM);
extern bool PPCGenerateStaticCode;
extern PPCTargetEnum PPCTarget;
} // end namespace llvm;

12
lib/Target/PowerPC/PPCAsmPrinter.cpp
View File

@ -132,7 +132,7 @@ namespace {
}
void printCallOperand(const MachineInstr *MI, unsigned OpNo) {
const MachineOperand &MO = MI->getOperand(OpNo);
if (!PPCGenerateStaticCode) {
if (TM.getRelocationModel() != Reloc::Static) {
if (MO.getType() == MachineOperand::MO_GlobalAddress) {
GlobalValue *GV = MO.getGlobal();
if (((GV->isExternal() || GV->hasWeakLinkage() ||
@ -167,7 +167,7 @@ namespace {
} else {
O << "ha16(";
printOp(MI->getOperand(OpNo));
if (PICEnabled)
if (TM.getRelocationModel() == Reloc::PIC)
O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
@ -179,7 +179,7 @@ namespace {
} else {
O << "lo16(";
printOp(MI->getOperand(OpNo));
if (PICEnabled)
if (TM.getRelocationModel() == Reloc::PIC)
O << "-\"L" << getFunctionNumber() << "$pb\")";
else
O << ')';
@ -362,7 +362,7 @@ void PPCAsmPrinter::printOp(const MachineOperand &MO) {
return;
case MachineOperand::MO_ExternalSymbol:
// Computing the address of an external symbol, not calling it.
if (!PPCGenerateStaticCode) {
if (TM.getRelocationModel() != Reloc::Static) {
std::string Name(GlobalPrefix); Name += MO.getSymbolName();
GVStubs.insert(Name);
O << "L" << Name << "$non_lazy_ptr";
@ -377,7 +377,7 @@ void PPCAsmPrinter::printOp(const MachineOperand &MO) {
int offset = MO.getOffset();
// External or weakly linked global variables need non-lazily-resolved stubs
if (!PPCGenerateStaticCode) {
if (TM.getRelocationModel() != Reloc::Static) {
if (((GV->isExternal() || GV->hasWeakLinkage() ||
GV->hasLinkOnceLinkage()))) {
GVStubs.insert(Name);
@ -585,7 +585,7 @@ bool DarwinAsmPrinter::doFinalization(Module &M) {
}
// Output stubs for dynamically-linked functions
if (PICEnabled) {
if (TM.getRelocationModel() == Reloc::PIC) {
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
i != e; ++i) {
SwitchSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"

4
lib/Target/PowerPC/PPCCodeEmitter.cpp
View File

@ -86,6 +86,9 @@ bool PPCTargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM,
}
bool PPCCodeEmitter::runOnMachineFunction(MachineFunction &MF) {
assert((MF.getTarget().getRelocationModel() != Reloc::Default ||
MF.getTarget().getRelocationModel() != Reloc::Static) &&
"JIT relocation model must be set to static or default!");
MCE.startFunction(MF);
MCE.emitConstantPool(MF.getConstantPool());
for (MachineFunction::iterator BB = MF.begin(), E = MF.end(); BB != E; ++BB)
@ -118,7 +121,6 @@ bool PPCCodeEmitter::runOnMachineFunction(MachineFunction &MF) {
}
void PPCCodeEmitter::emitBasicBlock(MachineBasicBlock &MBB) {
assert(!PICEnabled && "CodeEmitter does not support PIC!");
BBLocations[&MBB] = MCE.getCurrentPCValue();
for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end(); I != E; ++I){
MachineInstr &MI = *I;

8
lib/Target/PowerPC/PPCISelLowering.cpp
View File

@ -396,7 +396,7 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
SDOperand CPI = DAG.getTargetConstantPool(C, MVT::i32, CP->getAlignment());
SDOperand Zero = DAG.getConstant(0, MVT::i32);
if (PPCGenerateStaticCode) {
if (getTargetMachine().getRelocationModel() == Reloc::Static) {
// Generate non-pic code that has direct accesses to the constant pool.
// The address of the global is just (hi(&g)+lo(&g)).
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, CPI, Zero);
@ -407,7 +407,7 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
// Only lower ConstantPool on Darwin.
if (!getTargetMachine().getSubtarget<PPCSubtarget>().isDarwin()) break;
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, CPI, Zero);
if (PICEnabled) {
if (getTargetMachine().getRelocationModel() == Reloc::PIC) {
// With PIC, the first instruction is actually "GR+hi(&G)".
Hi = DAG.getNode(ISD::ADD, MVT::i32,
DAG.getNode(PPCISD::GlobalBaseReg, MVT::i32), Hi);
@ -423,7 +423,7 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
SDOperand GA = DAG.getTargetGlobalAddress(GV, MVT::i32, GSDN->getOffset());
SDOperand Zero = DAG.getConstant(0, MVT::i32);
if (PPCGenerateStaticCode) {
if (getTargetMachine().getRelocationModel() == Reloc::Static) {
// Generate non-pic code that has direct accesses to globals.
// The address of the global is just (hi(&g)+lo(&g)).
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, GA, Zero);
@ -435,7 +435,7 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
if (!getTargetMachine().getSubtarget<PPCSubtarget>().isDarwin()) break;
SDOperand Hi = DAG.getNode(PPCISD::Hi, MVT::i32, GA, Zero);
if (PICEnabled) {
if (getTargetMachine().getRelocationModel() == Reloc::PIC) {
// With PIC, the first instruction is actually "GR+hi(&G)".
Hi = DAG.getNode(ISD::ADD, MVT::i32,
DAG.getNode(PPCISD::GlobalBaseReg, MVT::i32), Hi);

8
lib/Target/PowerPC/PPCSubtarget.cpp
View File

@ -19,7 +19,6 @@
using namespace llvm;
PPCTargetEnum llvm::PPCTarget = TargetDefault;
bool llvm::PPCGenerateStaticCode = false;
namespace llvm {
cl::opt<PPCTargetEnum, true>
@ -29,12 +28,7 @@ namespace llvm {
clEnumValN(TargetDarwin,"darwin",
" Enable Darwin codegen"),
clEnumValEnd),
cl::location(PPCTarget), cl::init(TargetDefault));
cl::opt<bool, true>
PPCStaticCode("ppc-static",
cl::desc("PowerPC: generate completely non-pic code"),
cl::location(PPCGenerateStaticCode));
cl::location(PPCTarget), cl::init(TargetDefault));
}
#if defined(__APPLE__)

9
lib/Target/PowerPC/PPCTargetMachine.cpp
View File

@ -67,6 +67,11 @@ PPCTargetMachine::PPCTargetMachine(const Module &M, IntrinsicLowering *IL,
if (Subtarget.isAIX()) PPCTarget = TargetAIX;
if (Subtarget.isDarwin()) PPCTarget = TargetDarwin;
}
if (getRelocationModel() == Reloc::Default)
if (Subtarget.isDarwin())
setRelocationModel(Reloc::DynamicNoPIC);
else
setRelocationModel(Reloc::PIC);
}
/// addPassesToEmitFile - Add passes to the specified pass manager to implement
@ -129,8 +134,8 @@ bool PPCTargetMachine::addPassesToEmitFile(PassManager &PM,
}
void PPCJITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
// The JIT does not support or need PIC.
PICEnabled = false;
// The JIT should use static relocation model.
TM.setRelocationModel(Reloc::Static);
// Run loop strength reduction before anything else.
PM.add(createLoopStrengthReducePass());

34
lib/Target/TargetMachine.cpp
View File

@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Type.h"
#include "llvm/CodeGen/IntrinsicLowering.h"
#include "llvm/Support/CommandLine.h"
@ -26,7 +27,7 @@ namespace llvm {
bool NoFramePointerElim;
bool NoExcessFPPrecision;
bool UnsafeFPMath;
bool PICEnabled;
Reloc::Model RelocationModel;
};
namespace {
cl::opt<bool, true> PrintCode("print-machineinstrs",
@ -48,11 +49,22 @@ namespace {
cl::desc("Enable optimizations that may decrease FP precision"),
cl::location(UnsafeFPMath),
cl::init(false));
cl::opt<bool, true>
EnablePIC("enable-pic",
cl::desc("Enable generation of position independant code"),
cl::location(PICEnabled),
cl::init(false));
cl::opt<llvm::Reloc::Model, true>
DefRelocationModel(
"relocation-model",
cl::desc("Choose relocation model"),
cl::location(RelocationModel),
cl::init(Reloc::Default),
cl::values(
clEnumValN(Reloc::Default, "default",
"Target default relocation model"),
clEnumValN(Reloc::Static, "static",
"Non-relocatable code"),
clEnumValN(Reloc::PIC, "pic",
"Fully relocatable, position independent code"),
clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
"Relocatable external references, non-relocatable code"),
clEnumValEnd));
};
//---------------------------------------------------------------------------
@ -87,3 +99,13 @@ TargetMachine::~TargetMachine() {
delete IL;
}
/// getRelocationModel - Returns the code generation relocation model. The
/// choices are static, PIC, and dynamic-no-pic, and target default.
Reloc::Model TargetMachine::getRelocationModel() {
return RelocationModel;
}
/// setRelocationModel - Sets the code generation relocation model.
void TargetMachine::setRelocationModel(Reloc::Model Model) {
RelocationModel = Model;
}

14
lib/Target/X86/X86ATTAsmPrinter.cpp
View File

@ -119,7 +119,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
if (!isMemOp && !isCallOp) O << '$';
// Darwin block shameless ripped from PPCAsmPrinter.cpp
if (forDarwin) {
if (forDarwin && TM.getRelocationModel() != Reloc::Static) {
GlobalValue *GV = MO.getGlobal();
std::string Name = Mang->getValueName(GV);
// Link-once, External, or Weakly-linked global variables need
@ -133,7 +133,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
} else {
GVStubs.insert(Name);
O << "L" << Name << "$non_lazy_ptr";
if (PICEnabled)
if (TM.getRelocationModel() == Reloc::PIC)
O << "-\"L" << getFunctionNumber() << "$pb\"";
}
} else {
@ -150,14 +150,14 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
}
case MachineOperand::MO_ExternalSymbol: {
bool isCallOp = Modifier && !strcmp(Modifier, "call");
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
if (isCallOp && forDarwin) {
std::string Name(GlobalPrefix); Name += MO.getSymbolName();
if (isCallOp && forDarwin && TM.getRelocationModel() != Reloc::Static) {
std::string Name(GlobalPrefix);
Name += MO.getSymbolName();
FnStubs.insert(Name);
O << "L" << Name << "$stub";
return;
}
if (!isMemOp && !isCallOp) O << '$';
if (!isCallOp) O << '$';
O << GlobalPrefix << MO.getSymbolName();
return;
}
@ -198,7 +198,7 @@ void X86ATTAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op){
} else if (BaseReg.isConstantPoolIndex()) {
O << PrivateGlobalPrefix << "CPI" << getFunctionNumber() << "_"
<< BaseReg.getConstantPoolIndex();
if (forDarwin && PICEnabled)
if (forDarwin && TM.getRelocationModel() == Reloc::PIC)
O << "-\"L" << getFunctionNumber() << "$pb\"";
if (DispSpec.getImmedValue())
O << "+" << DispSpec.getImmedValue();

4
lib/Target/X86/X86CodeEmitter.cpp
View File

@ -77,6 +77,9 @@ FunctionPass *llvm::createX86CodeEmitterPass(MachineCodeEmitter &MCE) {
}
bool Emitter::runOnMachineFunction(MachineFunction &MF) {
assert((MF.getTarget().getRelocationModel() != Reloc::Default ||
MF.getTarget().getRelocationModel() != Reloc::Static) &&
"JIT relocation model must be set to static or default!");
II = ((X86TargetMachine&)MF.getTarget()).getInstrInfo();
MCE.startFunction(MF);
@ -97,7 +100,6 @@ bool Emitter::runOnMachineFunction(MachineFunction &MF) {
}
void Emitter::emitBasicBlock(const MachineBasicBlock &MBB) {
assert(!PICEnabled && "CodeEmitter does not support PIC!");
if (uint64_t Addr = MCE.getCurrentPCValue())
BasicBlockAddrs[&MBB] = Addr;

9
lib/Target/X86/X86ISelLowering.cpp
View File

@ -1836,7 +1836,7 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
if (getTargetMachine().
getSubtarget<X86Subtarget>().isTargetDarwin()) {
// With PIC, the address is actually $g + Offset.
if (PICEnabled)
if (getTargetMachine().getRelocationModel() == Reloc::PIC)
Result = DAG.getNode(ISD::ADD, getPointerTy(),
DAG.getNode(X86ISD::GlobalBaseReg, getPointerTy()), Result);
}
@ -1851,7 +1851,7 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
SDOperand Addr = DAG.getTargetGlobalAddress(GV, getPointerTy());
// With PIC, the address is actually $g + Offset.
if (PICEnabled)
if (getTargetMachine().getRelocationModel() == Reloc::PIC)
Addr = DAG.getNode(ISD::ADD, getPointerTy(),
DAG.getNode(X86ISD::GlobalBaseReg, getPointerTy()), Addr);
@ -1859,8 +1859,9 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
// the value at address GV, not the value of GV itself. This means that
// the GlobalAddress must be in the base or index register of the address,
// not the GV offset field.
if (GV->hasWeakLinkage() || GV->hasLinkOnceLinkage() ||
(GV->isExternal() && !GV->hasNotBeenReadFromBytecode()))
if (getTargetMachine().getRelocationModel() != Reloc::Static &&
(GV->hasWeakLinkage() || GV->hasLinkOnceLinkage() ||
(GV->isExternal() && !GV->hasNotBeenReadFromBytecode())))
Result = DAG.getLoad(MVT::i32, DAG.getEntryNode(),
Addr, DAG.getSrcValue(NULL));
}

13
lib/Target/X86/X86IntelAsmPrinter.cpp
View File

@ -113,7 +113,7 @@ void X86IntelAsmPrinter::printOp(const MachineOperand &MO,
bool isCallOp = Modifier && !strcmp(Modifier, "call");
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
if (!isMemOp && !isCallOp) O << "OFFSET ";
if (forDarwin) {
if (forDarwin && TM.getRelocationModel() != Reloc::Static) {
GlobalValue *GV = MO.getGlobal();
std::string Name = Mang->getValueName(GV);
if (!isMemOp && !isCallOp) O << '$';
@ -128,7 +128,7 @@ void X86IntelAsmPrinter::printOp(const MachineOperand &MO,
} else {
GVStubs.insert(Name);
O << "L" << Name << "$non_lazy_ptr";
if (PICEnabled)
if (TM.getRelocationModel() == Reloc::PIC)
O << "-\"L" << getFunctionNumber() << "$pb\"";
}
} else {
@ -145,13 +145,14 @@ void X86IntelAsmPrinter::printOp(const MachineOperand &MO,
}
case MachineOperand::MO_ExternalSymbol: {
bool isCallOp = Modifier && !strcmp(Modifier, "call");
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
if (isCallOp && forDarwin) {
std::string Name(GlobalPrefix); Name += MO.getSymbolName();
if (isCallOp && forDarwin && TM.getRelocationModel() != Reloc::Static) {
std::string Name(GlobalPrefix);
Name += MO.getSymbolName();
FnStubs.insert(Name);
O << "L" << Name << "$stub";
return;
}
if (!isCallOp) O << "OFFSET ";
O << GlobalPrefix << MO.getSymbolName();
return;
}
@ -177,7 +178,7 @@ void X86IntelAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op){
} else if (BaseReg.isConstantPoolIndex()) {
O << "[" << PrivateGlobalPrefix << "CPI" << getFunctionNumber() << "_"
<< BaseReg.getConstantPoolIndex();
if (forDarwin && PICEnabled)
if (forDarwin && TM.getRelocationModel() == Reloc::PIC)
O << "-\"L" << getFunctionNumber() << "$pb\"";
if (IndexReg.getReg()) {

9
lib/Target/X86/X86TargetMachine.cpp
View File

@ -76,6 +76,11 @@ X86TargetMachine::X86TargetMachine(const Module &M,
FrameInfo(TargetFrameInfo::StackGrowsDown,
Subtarget.getStackAlignment(), -4),
JITInfo(*this) {
if (getRelocationModel() == Reloc::Default)
if (Subtarget.isTargetDarwin())
setRelocationModel(Reloc::DynamicNoPIC);
else
setRelocationModel(Reloc::PIC);
}
@ -149,8 +154,8 @@ bool X86TargetMachine::addPassesToEmitFile(PassManager &PM, std::ostream &Out,
/// not supported for this target.
///
void X86JITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
// The JIT does not support or need PIC.
PICEnabled = false;
// The JIT should use static relocation model.
TM.setRelocationModel(Reloc::Static);
// FIXME: Implement efficient support for garbage collection intrinsics.
PM.add(createLowerGCPass());