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-rw-r--r--lib/Target/X86/X86TargetMachine.cpp279
1 files changed, 107 insertions, 172 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index b000914c9203..a61de1cd182a 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -11,172 +11,134 @@
//
//===----------------------------------------------------------------------===//
-#include "X86TargetAsmInfo.h"
+#include "X86MCAsmInfo.h"
#include "X86TargetMachine.h"
#include "X86.h"
-#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/Passes.h"
-#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/FormattedStream.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/Target/TargetMachineRegistry.h"
+#include "llvm/Target/TargetRegistry.h"
using namespace llvm;
-/// X86TargetMachineModule - Note that this is used on hosts that cannot link
-/// in a library unless there are references into the library. In particular,
-/// it seems that it is not possible to get things to work on Win32 without
-/// this. Though it is unused, do not remove it.
-extern "C" int X86TargetMachineModule;
-int X86TargetMachineModule = 0;
-
-// Register the target.
-static RegisterTarget<X86_32TargetMachine>
-X("x86", "32-bit X86: Pentium-Pro and above");
-static RegisterTarget<X86_64TargetMachine>
-Y("x86-64", "64-bit X86: EM64T and AMD64");
-
-// Force static initialization.
-extern "C" void LLVMInitializeX86Target() { }
-
-// No assembler printer by default
-X86TargetMachine::AsmPrinterCtorFn X86TargetMachine::AsmPrinterCtor = 0;
-
-const TargetAsmInfo *X86TargetMachine::createTargetAsmInfo() const {
- if (Subtarget.isFlavorIntel())
- return new X86WinTargetAsmInfo(*this);
- else
- switch (Subtarget.TargetType) {
- case X86Subtarget::isDarwin:
- return new X86DarwinTargetAsmInfo(*this);
- case X86Subtarget::isELF:
- return new X86ELFTargetAsmInfo(*this);
- case X86Subtarget::isMingw:
- case X86Subtarget::isCygwin:
- return new X86COFFTargetAsmInfo(*this);
- case X86Subtarget::isWindows:
- return new X86WinTargetAsmInfo(*this);
- default:
- return new X86GenericTargetAsmInfo(*this);
- }
-}
-
-unsigned X86_32TargetMachine::getJITMatchQuality() {
-#if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
- return 10;
-#endif
- return 0;
-}
-
-unsigned X86_64TargetMachine::getJITMatchQuality() {
-#if defined(__x86_64__) || defined(_M_AMD64)
- return 10;
-#endif
- return 0;
+static const MCAsmInfo *createMCAsmInfo(const Target &T,
+ const StringRef &TT) {
+ Triple TheTriple(TT);
+ switch (TheTriple.getOS()) {
+ case Triple::Darwin:
+ return new X86MCAsmInfoDarwin(TheTriple);
+ case Triple::MinGW32:
+ case Triple::MinGW64:
+ case Triple::Cygwin:
+ return new X86MCAsmInfoCOFF(TheTriple);
+ case Triple::Win32:
+ return new X86WinMCAsmInfo(TheTriple);
+ default:
+ return new X86ELFMCAsmInfo(TheTriple);
+ }
}
-unsigned X86_32TargetMachine::getModuleMatchQuality(const Module &M) {
- // We strongly match "i[3-9]86-*".
- std::string TT = M.getTargetTriple();
- if (TT.size() >= 5 && TT[0] == 'i' && TT[2] == '8' && TT[3] == '6' &&
- TT[4] == '-' && TT[1] - '3' < 6)
- return 20;
- // If the target triple is something non-X86, we don't match.
- if (!TT.empty()) return 0;
+extern "C" void LLVMInitializeX86Target() {
+ // Register the target.
+ RegisterTargetMachine<X86_32TargetMachine> X(TheX86_32Target);
+ RegisterTargetMachine<X86_64TargetMachine> Y(TheX86_64Target);
- if (M.getEndianness() == Module::LittleEndian &&
- M.getPointerSize() == Module::Pointer32)
- return 10; // Weak match
- else if (M.getEndianness() != Module::AnyEndianness ||
- M.getPointerSize() != Module::AnyPointerSize)
- return 0; // Match for some other target
+ // Register the target asm info.
+ RegisterAsmInfoFn A(TheX86_32Target, createMCAsmInfo);
+ RegisterAsmInfoFn B(TheX86_64Target, createMCAsmInfo);
- return getJITMatchQuality()/2;
+ // Register the code emitter.
+ TargetRegistry::RegisterCodeEmitter(TheX86_32Target, createX86MCCodeEmitter);
+ TargetRegistry::RegisterCodeEmitter(TheX86_64Target, createX86MCCodeEmitter);
}
-unsigned X86_64TargetMachine::getModuleMatchQuality(const Module &M) {
- // We strongly match "x86_64-*".
- std::string TT = M.getTargetTriple();
- if (TT.size() >= 7 && TT[0] == 'x' && TT[1] == '8' && TT[2] == '6' &&
- TT[3] == '_' && TT[4] == '6' && TT[5] == '4' && TT[6] == '-')
- return 20;
-
- // We strongly match "amd64-*".
- if (TT.size() >= 6 && TT[0] == 'a' && TT[1] == 'm' && TT[2] == 'd' &&
- TT[3] == '6' && TT[4] == '4' && TT[5] == '-')
- return 20;
-
- // If the target triple is something non-X86-64, we don't match.
- if (!TT.empty()) return 0;
-
- if (M.getEndianness() == Module::LittleEndian &&
- M.getPointerSize() == Module::Pointer64)
- return 10; // Weak match
- else if (M.getEndianness() != Module::AnyEndianness ||
- M.getPointerSize() != Module::AnyPointerSize)
- return 0; // Match for some other target
- return getJITMatchQuality()/2;
-}
-
-X86_32TargetMachine::X86_32TargetMachine(const Module &M, const std::string &FS)
- : X86TargetMachine(M, FS, false) {
+X86_32TargetMachine::X86_32TargetMachine(const Target &T, const std::string &TT,
+ const std::string &FS)
+ : X86TargetMachine(T, TT, FS, false) {
}
-X86_64TargetMachine::X86_64TargetMachine(const Module &M, const std::string &FS)
- : X86TargetMachine(M, FS, true) {
+X86_64TargetMachine::X86_64TargetMachine(const Target &T, const std::string &TT,
+ const std::string &FS)
+ : X86TargetMachine(T, TT, FS, true) {
}
-/// X86TargetMachine ctor - Create an ILP32 architecture model
+/// X86TargetMachine ctor - Create an X86 target.
///
-X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
- bool is64Bit)
- : Subtarget(M, FS, is64Bit),
+X86TargetMachine::X86TargetMachine(const Target &T, const std::string &TT,
+ const std::string &FS, bool is64Bit)
+ : LLVMTargetMachine(T, TT),
+ Subtarget(TT, FS, is64Bit),
DataLayout(Subtarget.getDataLayout()),
FrameInfo(TargetFrameInfo::StackGrowsDown,
- Subtarget.getStackAlignment(), Subtarget.is64Bit() ? -8 : -4),
+ Subtarget.getStackAlignment(),
+ (Subtarget.isTargetWin64() ? -40 :
+ (Subtarget.is64Bit() ? -8 : -4))),
InstrInfo(*this), JITInfo(*this), TLInfo(*this), ELFWriterInfo(*this) {
DefRelocModel = getRelocationModel();
- // FIXME: Correctly select PIC model for Win64 stuff
+
+ // If no relocation model was picked, default as appropriate for the target.
if (getRelocationModel() == Reloc::Default) {
- if (Subtarget.isTargetDarwin() ||
- (Subtarget.isTargetCygMing() && !Subtarget.isTargetWin64()))
- setRelocationModel(Reloc::DynamicNoPIC);
- else
+ if (!Subtarget.isTargetDarwin())
setRelocationModel(Reloc::Static);
+ else if (Subtarget.is64Bit())
+ setRelocationModel(Reloc::PIC_);
+ else
+ setRelocationModel(Reloc::DynamicNoPIC);
}
- // ELF doesn't have a distinct dynamic-no-PIC model. Dynamic-no-PIC
- // is defined as a model for code which may be used in static or
- // dynamic executables but not necessarily a shared library. On ELF
- // implement this by using the Static model.
- if (Subtarget.isTargetELF() &&
- getRelocationModel() == Reloc::DynamicNoPIC)
- setRelocationModel(Reloc::Static);
-
- if (Subtarget.is64Bit()) {
- // No DynamicNoPIC support under X86-64.
- if (getRelocationModel() == Reloc::DynamicNoPIC)
+ assert(getRelocationModel() != Reloc::Default &&
+ "Relocation mode not picked");
+
+ // If no code model is picked, default to small.
+ if (getCodeModel() == CodeModel::Default)
+ setCodeModel(CodeModel::Small);
+
+ // ELF and X86-64 don't have a distinct DynamicNoPIC model. DynamicNoPIC
+ // is defined as a model for code which may be used in static or dynamic
+ // executables but not necessarily a shared library. On X86-32 we just
+ // compile in -static mode, in x86-64 we use PIC.
+ if (getRelocationModel() == Reloc::DynamicNoPIC) {
+ if (is64Bit)
setRelocationModel(Reloc::PIC_);
- // Default X86-64 code model is small.
- if (getCodeModel() == CodeModel::Default)
- setCodeModel(CodeModel::Small);
+ else if (!Subtarget.isTargetDarwin())
+ setRelocationModel(Reloc::Static);
}
- if (Subtarget.isTargetCygMing())
- Subtarget.setPICStyle(PICStyles::WinPIC);
- else if (Subtarget.isTargetDarwin()) {
+ // If we are on Darwin, disallow static relocation model in X86-64 mode, since
+ // the Mach-O file format doesn't support it.
+ if (getRelocationModel() == Reloc::Static &&
+ Subtarget.isTargetDarwin() &&
+ is64Bit)
+ setRelocationModel(Reloc::PIC_);
+
+ // Determine the PICStyle based on the target selected.
+ if (getRelocationModel() == Reloc::Static) {
+ // Unless we're in PIC or DynamicNoPIC mode, set the PIC style to None.
+ Subtarget.setPICStyle(PICStyles::None);
+ } else if (Subtarget.isTargetCygMing()) {
+ Subtarget.setPICStyle(PICStyles::None);
+ } else if (Subtarget.isTargetDarwin()) {
if (Subtarget.is64Bit())
Subtarget.setPICStyle(PICStyles::RIPRel);
- else
- Subtarget.setPICStyle(PICStyles::Stub);
+ else if (getRelocationModel() == Reloc::PIC_)
+ Subtarget.setPICStyle(PICStyles::StubPIC);
+ else {
+ assert(getRelocationModel() == Reloc::DynamicNoPIC);
+ Subtarget.setPICStyle(PICStyles::StubDynamicNoPIC);
+ }
} else if (Subtarget.isTargetELF()) {
if (Subtarget.is64Bit())
Subtarget.setPICStyle(PICStyles::RIPRel);
else
Subtarget.setPICStyle(PICStyles::GOT);
}
+
+ // Finally, if we have "none" as our PIC style, force to static mode.
+ if (Subtarget.getPICStyle() == PICStyles::None)
+ setRelocationModel(Reloc::Static);
}
//===----------------------------------------------------------------------===//
@@ -212,33 +174,16 @@ bool X86TargetMachine::addPostRegAlloc(PassManagerBase &PM,
return true; // -print-machineinstr should print after this.
}
-bool X86TargetMachine::addAssemblyEmitter(PassManagerBase &PM,
- CodeGenOpt::Level OptLevel,
- bool Verbose,
- raw_ostream &Out) {
- // FIXME: Move this somewhere else!
- // On Darwin, override 64-bit static relocation to pic_ since the
- // assembler doesn't support it.
- if (DefRelocModel == Reloc::Static &&
- Subtarget.isTargetDarwin() && Subtarget.is64Bit() &&
- getCodeModel() == CodeModel::Small)
- setRelocationModel(Reloc::PIC_);
-
- assert(AsmPrinterCtor && "AsmPrinter was not linked in");
- if (AsmPrinterCtor)
- PM.add(AsmPrinterCtor(Out, *this, Verbose));
- return false;
-}
-
bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
- bool DumpAsm,
MachineCodeEmitter &MCE) {
// FIXME: Move this to TargetJITInfo!
// On Darwin, do not override 64-bit setting made in X86TargetMachine().
if (DefRelocModel == Reloc::Default &&
- (!Subtarget.isTargetDarwin() || !Subtarget.is64Bit()))
+ (!Subtarget.isTargetDarwin() || !Subtarget.is64Bit())) {
setRelocationModel(Reloc::Static);
+ Subtarget.setPICStyle(PICStyles::None);
+ }
// 64-bit JIT places everything in the same buffer except external functions.
// On Darwin, use small code model but hack the call instruction for
@@ -251,24 +196,20 @@ bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
}
PM.add(createX86CodeEmitterPass(*this, MCE));
- if (DumpAsm) {
- assert(AsmPrinterCtor && "AsmPrinter was not linked in");
- if (AsmPrinterCtor)
- PM.add(AsmPrinterCtor(errs(), *this, true));
- }
return false;
}
bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
- bool DumpAsm,
JITCodeEmitter &JCE) {
// FIXME: Move this to TargetJITInfo!
// On Darwin, do not override 64-bit setting made in X86TargetMachine().
if (DefRelocModel == Reloc::Default &&
- (!Subtarget.isTargetDarwin() || !Subtarget.is64Bit()))
+ (!Subtarget.isTargetDarwin() || !Subtarget.is64Bit())) {
setRelocationModel(Reloc::Static);
+ Subtarget.setPICStyle(PICStyles::None);
+ }
// 64-bit JIT places everything in the same buffer except external functions.
// On Darwin, use small code model but hack the call instruction for
@@ -281,40 +222,34 @@ bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
}
PM.add(createX86JITCodeEmitterPass(*this, JCE));
- if (DumpAsm) {
- assert(AsmPrinterCtor && "AsmPrinter was not linked in");
- if (AsmPrinterCtor)
- PM.add(AsmPrinterCtor(errs(), *this, true));
- }
return false;
}
+bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM,
+ CodeGenOpt::Level OptLevel,
+ ObjectCodeEmitter &OCE) {
+ PM.add(createX86ObjectCodeEmitterPass(*this, OCE));
+ return false;
+}
+
bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
- bool DumpAsm,
MachineCodeEmitter &MCE) {
PM.add(createX86CodeEmitterPass(*this, MCE));
- if (DumpAsm) {
- assert(AsmPrinterCtor && "AsmPrinter was not linked in");
- if (AsmPrinterCtor)
- PM.add(AsmPrinterCtor(errs(), *this, true));
- }
-
return false;
}
bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
CodeGenOpt::Level OptLevel,
- bool DumpAsm,
JITCodeEmitter &JCE) {
PM.add(createX86JITCodeEmitterPass(*this, JCE));
- if (DumpAsm) {
- assert(AsmPrinterCtor && "AsmPrinter was not linked in");
- if (AsmPrinterCtor)
- PM.add(AsmPrinterCtor(errs(), *this, true));
- }
-
return false;
}
+bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM,
+ CodeGenOpt::Level OptLevel,
+ ObjectCodeEmitter &OCE) {
+ PM.add(createX86ObjectCodeEmitterPass(*this, OCE));
+ return false;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 15:30:34 +0000