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-rw-r--r--lib/Target/PTX/PTXAsmPrinter.cpp561
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diff --git a/lib/Target/PTX/PTXAsmPrinter.cpp b/lib/Target/PTX/PTXAsmPrinter.cpp
deleted file mode 100644
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--- a/lib/Target/PTX/PTXAsmPrinter.cpp
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-//===-- PTXAsmPrinter.cpp - PTX LLVM assembly writer ----------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains a printer that converts from our internal representation
-// of machine-dependent LLVM code to PTX assembly language.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "ptx-asm-printer"
-
-#include "PTXAsmPrinter.h"
-#include "PTX.h"
-#include "PTXMachineFunctionInfo.h"
-#include "PTXParamManager.h"
-#include "PTXRegisterInfo.h"
-#include "PTXTargetMachine.h"
-#include "llvm/Argument.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Function.h"
-#include "llvm/Module.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Analysis/DebugInfo.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCExpr.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSymbol.h"
-#include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/raw_ostream.h"
-
-using namespace llvm;
-
-static const char PARAM_PREFIX[] = "__param_";
-static const char RETURN_PREFIX[] = "__ret_";
-
-static const char *getRegisterTypeName(unsigned RegType) {
- switch (RegType) {
- default:
- llvm_unreachable("Unknown register type");
- case PTXRegisterType::Pred:
- return ".pred";
- case PTXRegisterType::B16:
- return ".b16";
- case PTXRegisterType::B32:
- return ".b32";
- case PTXRegisterType::B64:
- return ".b64";
- case PTXRegisterType::F32:
- return ".f32";
- case PTXRegisterType::F64:
- return ".f64";
- }
-}
-
-static const char *getStateSpaceName(unsigned addressSpace) {
- switch (addressSpace) {
- default: llvm_unreachable("Unknown state space");
- case PTXStateSpace::Global: return "global";
- case PTXStateSpace::Constant: return "const";
- case PTXStateSpace::Local: return "local";
- case PTXStateSpace::Parameter: return "param";
- case PTXStateSpace::Shared: return "shared";
- }
-}
-
-static const char *getTypeName(Type* type) {
- while (true) {
- switch (type->getTypeID()) {
- default: llvm_unreachable("Unknown type");
- case Type::FloatTyID: return ".f32";
- case Type::DoubleTyID: return ".f64";
- case Type::IntegerTyID:
- switch (type->getPrimitiveSizeInBits()) {
- default: llvm_unreachable("Unknown integer bit-width");
- case 16: return ".u16";
- case 32: return ".u32";
- case 64: return ".u64";
- }
- case Type::ArrayTyID:
- case Type::PointerTyID:
- type = dyn_cast<SequentialType>(type)->getElementType();
- break;
- }
- }
- return NULL;
-}
-
-bool PTXAsmPrinter::doFinalization(Module &M) {
- // XXX Temproarily remove global variables so that doFinalization() will not
- // emit them again (global variables are emitted at beginning).
-
- Module::GlobalListType &global_list = M.getGlobalList();
- int i, n = global_list.size();
- GlobalVariable **gv_array = new GlobalVariable* [n];
-
- // first, back-up GlobalVariable in gv_array
- i = 0;
- for (Module::global_iterator I = global_list.begin(), E = global_list.end();
- I != E; ++I)
- gv_array[i++] = &*I;
-
- // second, empty global_list
- while (!global_list.empty())
- global_list.remove(global_list.begin());
-
- // call doFinalization
- bool ret = AsmPrinter::doFinalization(M);
-
- // now we restore global variables
- for (i = 0; i < n; i ++)
- global_list.insert(global_list.end(), gv_array[i]);
-
- delete[] gv_array;
- return ret;
-}
-
-void PTXAsmPrinter::EmitStartOfAsmFile(Module &M)
-{
- const PTXSubtarget& ST = TM.getSubtarget<PTXSubtarget>();
-
- // Emit the PTX .version and .target attributes
- OutStreamer.EmitRawText(Twine("\t.version ") + ST.getPTXVersionString());
- OutStreamer.EmitRawText(Twine("\t.target ") + ST.getTargetString() +
- (ST.supportsDouble() ? ""
- : ", map_f64_to_f32"));
- // .address_size directive is optional, but it must immediately follow
- // the .target directive if present within a module
- if (ST.supportsPTX23()) {
- const char *addrSize = ST.is64Bit() ? "64" : "32";
- OutStreamer.EmitRawText(Twine("\t.address_size ") + addrSize);
- }
-
- OutStreamer.AddBlankLine();
-
- // Define any .file directives
- DebugInfoFinder DbgFinder;
- DbgFinder.processModule(M);
-
- for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
- E = DbgFinder.compile_unit_end(); I != E; ++I) {
- DICompileUnit DIUnit(*I);
- StringRef FN = DIUnit.getFilename();
- StringRef Dir = DIUnit.getDirectory();
- GetOrCreateSourceID(FN, Dir);
- }
-
- OutStreamer.AddBlankLine();
-
- // declare external functions
- for (Module::const_iterator i = M.begin(), e = M.end();
- i != e; ++i)
- EmitFunctionDeclaration(i);
-
- // declare global variables
- for (Module::const_global_iterator i = M.global_begin(), e = M.global_end();
- i != e; ++i)
- EmitVariableDeclaration(i);
-}
-
-void PTXAsmPrinter::EmitFunctionBodyStart() {
- OutStreamer.EmitRawText(Twine("{"));
-
- const PTXMachineFunctionInfo *MFI = MF->getInfo<PTXMachineFunctionInfo>();
- const PTXParamManager &PM = MFI->getParamManager();
-
- // Print register definitions
- SmallString<128> regDefs;
- raw_svector_ostream os(regDefs);
- unsigned numRegs;
-
- // pred
- numRegs = MFI->countRegisters(PTXRegisterType::Pred, PTXRegisterSpace::Reg);
- if(numRegs > 0)
- os << "\t.reg .pred %p<" << numRegs << ">;\n";
-
- // i16
- numRegs = MFI->countRegisters(PTXRegisterType::B16, PTXRegisterSpace::Reg);
- if(numRegs > 0)
- os << "\t.reg .b16 %rh<" << numRegs << ">;\n";
-
- // i32
- numRegs = MFI->countRegisters(PTXRegisterType::B32, PTXRegisterSpace::Reg);
- if(numRegs > 0)
- os << "\t.reg .b32 %r<" << numRegs << ">;\n";
-
- // i64
- numRegs = MFI->countRegisters(PTXRegisterType::B64, PTXRegisterSpace::Reg);
- if(numRegs > 0)
- os << "\t.reg .b64 %rd<" << numRegs << ">;\n";
-
- // f32
- numRegs = MFI->countRegisters(PTXRegisterType::F32, PTXRegisterSpace::Reg);
- if(numRegs > 0)
- os << "\t.reg .f32 %f<" << numRegs << ">;\n";
-
- // f64
- numRegs = MFI->countRegisters(PTXRegisterType::F64, PTXRegisterSpace::Reg);
- if(numRegs > 0)
- os << "\t.reg .f64 %fd<" << numRegs << ">;\n";
-
- // Local params
- for (PTXParamManager::param_iterator i = PM.local_begin(), e = PM.local_end();
- i != e; ++i)
- os << "\t.param .b" << PM.getParamSize(*i) << ' ' << PM.getParamName(*i)
- << ";\n";
-
- OutStreamer.EmitRawText(os.str());
-
-
- const MachineFrameInfo* FrameInfo = MF->getFrameInfo();
- DEBUG(dbgs() << "Have " << FrameInfo->getNumObjects()
- << " frame object(s)\n");
- for (unsigned i = 0, e = FrameInfo->getNumObjects(); i != e; ++i) {
- DEBUG(dbgs() << "Size of object: " << FrameInfo->getObjectSize(i) << "\n");
- if (FrameInfo->getObjectSize(i) > 0) {
- OutStreamer.EmitRawText("\t.local .align " +
- Twine(FrameInfo->getObjectAlignment(i)) +
- " .b8 __local" +
- Twine(i) +
- "[" +
- Twine(FrameInfo->getObjectSize(i)) +
- "];");
- }
- }
-
- //unsigned Index = 1;
- // Print parameter passing params
- //for (PTXMachineFunctionInfo::param_iterator
- // i = MFI->paramBegin(), e = MFI->paramEnd(); i != e; ++i) {
- // std::string def = "\t.param .b";
- // def += utostr(*i);
- // def += " __ret_";
- // def += utostr(Index);
- // Index++;
- // def += ";";
- // OutStreamer.EmitRawText(Twine(def));
- //}
-}
-
-void PTXAsmPrinter::EmitFunctionBodyEnd() {
- OutStreamer.EmitRawText(Twine("}"));
-}
-
-void PTXAsmPrinter::EmitInstruction(const MachineInstr *MI) {
- MCInst TmpInst;
- LowerPTXMachineInstrToMCInst(MI, TmpInst, *this);
- OutStreamer.EmitInstruction(TmpInst);
-}
-
-void PTXAsmPrinter::EmitVariableDeclaration(const GlobalVariable *gv) {
- // Check to see if this is a special global used by LLVM, if so, emit it.
- if (EmitSpecialLLVMGlobal(gv))
- return;
-
- MCSymbol *gvsym = Mang->getSymbol(gv);
-
- assert(gvsym->isUndefined() && "Cannot define a symbol twice!");
-
- SmallString<128> decl;
- raw_svector_ostream os(decl);
-
- // check if it is defined in some other translation unit
- if (gv->isDeclaration())
- os << ".extern ";
-
- // state space: e.g., .global
- os << '.' << getStateSpaceName(gv->getType()->getAddressSpace()) << ' ';
-
- // alignment (optional)
- unsigned alignment = gv->getAlignment();
- if (alignment != 0)
- os << ".align " << gv->getAlignment() << ' ';
-
-
- if (PointerType::classof(gv->getType())) {
- PointerType* pointerTy = dyn_cast<PointerType>(gv->getType());
- Type* elementTy = pointerTy->getElementType();
-
- if (elementTy->isArrayTy()) {
- assert(elementTy->isArrayTy() && "Only pointers to arrays are supported");
-
- ArrayType* arrayTy = dyn_cast<ArrayType>(elementTy);
- elementTy = arrayTy->getElementType();
-
- unsigned numElements = arrayTy->getNumElements();
-
- while (elementTy->isArrayTy()) {
- arrayTy = dyn_cast<ArrayType>(elementTy);
- elementTy = arrayTy->getElementType();
-
- numElements *= arrayTy->getNumElements();
- }
-
- // FIXME: isPrimitiveType() == false for i16?
- assert(elementTy->isSingleValueType() &&
- "Non-primitive types are not handled");
-
- // Find the size of the element in bits
- unsigned elementSize = elementTy->getPrimitiveSizeInBits();
-
- os << ".b" << elementSize << ' ' << gvsym->getName()
- << '[' << numElements << ']';
- } else {
- os << ".b8" << gvsym->getName() << "[]";
- }
-
- // handle string constants (assume ConstantArray means string)
- if (gv->hasInitializer()) {
- const Constant *C = gv->getInitializer();
- if (const ConstantArray *CA = dyn_cast<ConstantArray>(C)) {
- os << " = {";
-
- for (unsigned i = 0, e = C->getNumOperands(); i != e; ++i) {
- if (i > 0)
- os << ',';
-
- os << "0x";
- os.write_hex(cast<ConstantInt>(CA->getOperand(i))->getZExtValue());
- }
-
- os << '}';
- }
- }
- } else {
- // Note: this is currently the fall-through case and most likely generates
- // incorrect code.
- os << getTypeName(gv->getType()) << ' ' << gvsym->getName();
-
- if (isa<ArrayType>(gv->getType()) || isa<PointerType>(gv->getType()))
- os << "[]";
- }
-
- os << ';';
-
- OutStreamer.EmitRawText(os.str());
- OutStreamer.AddBlankLine();
-}
-
-void PTXAsmPrinter::EmitFunctionEntryLabel() {
- // The function label could have already been emitted if two symbols end up
- // conflicting due to asm renaming. Detect this and emit an error.
- if (!CurrentFnSym->isUndefined())
- report_fatal_error("'" + Twine(CurrentFnSym->getName()) +
- "' label emitted multiple times to assembly file");
-
- const PTXMachineFunctionInfo *MFI = MF->getInfo<PTXMachineFunctionInfo>();
- const PTXParamManager &PM = MFI->getParamManager();
- const bool isKernel = MFI->isKernel();
- const PTXSubtarget& ST = TM.getSubtarget<PTXSubtarget>();
-
- SmallString<128> decl;
- raw_svector_ostream os(decl);
- os << (isKernel ? ".entry" : ".func");
-
- if (!isKernel) {
- os << " (";
- if (ST.useParamSpaceForDeviceArgs()) {
- for (PTXParamManager::param_iterator i = PM.ret_begin(), e = PM.ret_end(),
- b = i; i != e; ++i) {
- if (i != b)
- os << ", ";
-
- os << ".param .b" << PM.getParamSize(*i) << ' ' << PM.getParamName(*i);
- }
- } else {
- for (PTXMachineFunctionInfo::reg_iterator
- i = MFI->retreg_begin(), e = MFI->retreg_end(), b = i;
- i != e; ++i) {
- if (i != b)
- os << ", ";
-
- os << ".reg " << getRegisterTypeName(MFI->getRegisterType(*i)) << ' '
- << MFI->getRegisterName(*i);
- }
- }
- os << ')';
- }
-
- // Print function name
- os << ' ' << CurrentFnSym->getName() << " (";
-
- const Function *F = MF->getFunction();
-
- // Print parameters
- if (isKernel || ST.useParamSpaceForDeviceArgs()) {
- /*for (PTXParamManager::param_iterator i = PM.arg_begin(), e = PM.arg_end(),
- b = i; i != e; ++i) {
- if (i != b)
- os << ", ";
-
- os << ".param .b" << PM.getParamSize(*i) << ' ' << PM.getParamName(*i);
- }*/
- int Counter = 1;
- for (Function::const_arg_iterator i = F->arg_begin(), e = F->arg_end(),
- b = i; i != e; ++i) {
- if (i != b)
- os << ", ";
- const Type *ArgType = (*i).getType();
- os << ".param .b";
- if (ArgType->isPointerTy()) {
- if (ST.is64Bit())
- os << "64";
- else
- os << "32";
- } else {
- os << ArgType->getPrimitiveSizeInBits();
- }
- if (ArgType->isPointerTy() && ST.emitPtrAttribute()) {
- const PointerType *PtrType = dyn_cast<const PointerType>(ArgType);
- os << " .ptr";
- switch (PtrType->getAddressSpace()) {
- default:
- llvm_unreachable("Unknown address space in argument");
- case PTXStateSpace::Global:
- os << " .global";
- break;
- case PTXStateSpace::Shared:
- os << " .shared";
- break;
- }
- }
- os << " __param_" << Counter++;
- }
- } else {
- for (PTXMachineFunctionInfo::reg_iterator
- i = MFI->argreg_begin(), e = MFI->argreg_end(), b = i;
- i != e; ++i) {
- if (i != b)
- os << ", ";
-
- os << ".reg " << getRegisterTypeName(MFI->getRegisterType(*i)) << ' '
- << MFI->getRegisterName(*i);
- }
- }
- os << ')';
-
- OutStreamer.EmitRawText(os.str());
-}
-
-void PTXAsmPrinter::EmitFunctionDeclaration(const Function* func)
-{
- const PTXSubtarget& ST = TM.getSubtarget<PTXSubtarget>();
-
- std::string decl = "";
-
- // hard-coded emission of extern vprintf function
-
- if (func->getName() == "printf" || func->getName() == "puts") {
- decl += ".extern .func (.param .b32 __param_1) vprintf (.param .b";
- if (ST.is64Bit())
- decl += "64";
- else
- decl += "32";
- decl += " __param_2, .param .b";
- if (ST.is64Bit())
- decl += "64";
- else
- decl += "32";
- decl += " __param_3)\n";
- }
-
- OutStreamer.EmitRawText(Twine(decl));
-}
-
-unsigned PTXAsmPrinter::GetOrCreateSourceID(StringRef FileName,
- StringRef DirName) {
- // If FE did not provide a file name, then assume stdin.
- if (FileName.empty())
- return GetOrCreateSourceID("<stdin>", StringRef());
-
- // MCStream expects full path name as filename.
- if (!DirName.empty() && !sys::path::is_absolute(FileName)) {
- SmallString<128> FullPathName = DirName;
- sys::path::append(FullPathName, FileName);
- // Here FullPathName will be copied into StringMap by GetOrCreateSourceID.
- return GetOrCreateSourceID(StringRef(FullPathName), StringRef());
- }
-
- StringMapEntry<unsigned> &Entry = SourceIdMap.GetOrCreateValue(FileName);
- if (Entry.getValue())
- return Entry.getValue();
-
- unsigned SrcId = SourceIdMap.size();
- Entry.setValue(SrcId);
-
- // Print out a .file directive to specify files for .loc directives.
- OutStreamer.EmitDwarfFileDirective(SrcId, "", Entry.getKey());
-
- return SrcId;
-}
-
-MCOperand PTXAsmPrinter::GetSymbolRef(const MachineOperand &MO,
- const MCSymbol *Symbol) {
- const MCExpr *Expr;
- Expr = MCSymbolRefExpr::Create(Symbol, MCSymbolRefExpr::VK_None, OutContext);
- return MCOperand::CreateExpr(Expr);
-}
-
-MCOperand PTXAsmPrinter::lowerOperand(const MachineOperand &MO) {
- MCOperand MCOp;
- const PTXMachineFunctionInfo *MFI = MF->getInfo<PTXMachineFunctionInfo>();
- unsigned EncodedReg;
- switch (MO.getType()) {
- default:
- llvm_unreachable("Unknown operand type");
- case MachineOperand::MO_Register:
- if (MO.getReg() > 0) {
- // Encode the register
- EncodedReg = MFI->getEncodedRegister(MO.getReg());
- } else {
- EncodedReg = 0;
- }
- MCOp = MCOperand::CreateReg(EncodedReg);
- break;
- case MachineOperand::MO_Immediate:
- MCOp = MCOperand::CreateImm(MO.getImm());
- break;
- case MachineOperand::MO_MachineBasicBlock:
- MCOp = MCOperand::CreateExpr(MCSymbolRefExpr::Create(
- MO.getMBB()->getSymbol(), OutContext));
- break;
- case MachineOperand::MO_GlobalAddress:
- MCOp = GetSymbolRef(MO, Mang->getSymbol(MO.getGlobal()));
- break;
- case MachineOperand::MO_ExternalSymbol:
- MCOp = GetSymbolRef(MO, GetExternalSymbolSymbol(MO.getSymbolName()));
- break;
- case MachineOperand::MO_FPImmediate:
- APFloat Val = MO.getFPImm()->getValueAPF();
- bool ignored;
- Val.convert(APFloat::IEEEdouble, APFloat::rmTowardZero, &ignored);
- MCOp = MCOperand::CreateFPImm(Val.convertToDouble());
- break;
- }
-
- return MCOp;
-}
-
-// Force static initialization.
-extern "C" void LLVMInitializePTXAsmPrinter() {
- RegisterAsmPrinter<PTXAsmPrinter> X(ThePTX32Target);
- RegisterAsmPrinter<PTXAsmPrinter> Y(ThePTX64Target);
-}
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