diff options
Diffstat (limited to 'release_23/lib/Target/CellSPU/SPUAsmPrinter.cpp')
| -rw-r--r-- | release_23/lib/Target/CellSPU/SPUAsmPrinter.cpp | 655 |
1 files changed, 0 insertions, 655 deletions
diff --git a/release_23/lib/Target/CellSPU/SPUAsmPrinter.cpp b/release_23/lib/Target/CellSPU/SPUAsmPrinter.cpp deleted file mode 100644 index f627896f6b89..000000000000 --- a/release_23/lib/Target/CellSPU/SPUAsmPrinter.cpp +++ /dev/null @@ -1,655 +0,0 @@ -//===-- SPUAsmPrinter.cpp - Print machine instrs to Cell SPU assembly -------=// -// -// 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 Cell SPU assembly language. This printer -// is the output mechanism used by `llc'. -// -//===----------------------------------------------------------------------===// - -#define DEBUG_TYPE "asmprinter" -#include "SPU.h" -#include "SPUTargetMachine.h" -#include "llvm/Constants.h" -#include "llvm/DerivedTypes.h" -#include "llvm/Module.h" -#include "llvm/Assembly/Writer.h" -#include "llvm/CodeGen/AsmPrinter.h" -#include "llvm/CodeGen/DwarfWriter.h" -#include "llvm/CodeGen/MachineModuleInfo.h" -#include "llvm/CodeGen/MachineFunctionPass.h" -#include "llvm/CodeGen/MachineInstr.h" -#include "llvm/Support/Mangler.h" -#include "llvm/Support/MathExtras.h" -#include "llvm/Support/CommandLine.h" -#include "llvm/Support/Debug.h" -#include "llvm/Support/Compiler.h" -#include "llvm/Target/TargetAsmInfo.h" -#include "llvm/Target/TargetRegisterInfo.h" -#include "llvm/Target/TargetInstrInfo.h" -#include "llvm/Target/TargetOptions.h" -#include "llvm/ADT/Statistic.h" -#include "llvm/ADT/StringExtras.h" -#include <set> -using namespace llvm; - -namespace { - STATISTIC(EmittedInsts, "Number of machine instrs printed"); - - const std::string bss_section(".bss"); - - struct VISIBILITY_HIDDEN SPUAsmPrinter : public AsmPrinter { - std::set<std::string> FnStubs, GVStubs; - - SPUAsmPrinter(std::ostream &O, TargetMachine &TM, const TargetAsmInfo *T) : - AsmPrinter(O, TM, T) - { - } - - virtual const char *getPassName() const { - return "STI CBEA SPU Assembly Printer"; - } - - SPUTargetMachine &getTM() { - return static_cast<SPUTargetMachine&>(TM); - } - - /// printInstruction - This method is automatically generated by tablegen - /// from the instruction set description. This method returns true if the - /// machine instruction was sufficiently described to print it, otherwise it - /// returns false. - bool printInstruction(const MachineInstr *MI); - - void printMachineInstruction(const MachineInstr *MI); - void printOp(const MachineOperand &MO); - - /// printRegister - Print register according to target requirements. - /// - void printRegister(const MachineOperand &MO, bool R0AsZero) { - unsigned RegNo = MO.getReg(); - assert(TargetRegisterInfo::isPhysicalRegister(RegNo) && - "Not physreg??"); - O << TM.getRegisterInfo()->get(RegNo).AsmName; - } - - void printOperand(const MachineInstr *MI, unsigned OpNo) { - const MachineOperand &MO = MI->getOperand(OpNo); - if (MO.isRegister()) { - assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg())&&"Not physreg??"); - O << TM.getRegisterInfo()->get(MO.getReg()).AsmName; - } else if (MO.isImmediate()) { - O << MO.getImm(); - } else { - printOp(MO); - } - } - - bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, const char *ExtraCode); - bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, const char *ExtraCode); - - - void - printS7ImmOperand(const MachineInstr *MI, unsigned OpNo) - { - int value = MI->getOperand(OpNo).getImm(); - value = (value << (32 - 7)) >> (32 - 7); - - assert((value >= -(1 << 8) && value <= (1 << 7) - 1) - && "Invalid s7 argument"); - O << value; - } - - void - printU7ImmOperand(const MachineInstr *MI, unsigned OpNo) - { - unsigned int value = MI->getOperand(OpNo).getImm(); - assert(value < (1 << 8) && "Invalid u7 argument"); - O << value; - } - - void - printMemRegImmS7(const MachineInstr *MI, unsigned OpNo) - { - char value = MI->getOperand(OpNo).getImm(); - O << (int) value; - O << "("; - printOperand(MI, OpNo+1); - O << ")"; - } - - void - printS16ImmOperand(const MachineInstr *MI, unsigned OpNo) - { - O << (short) MI->getOperand(OpNo).getImm(); - } - - void - printU16ImmOperand(const MachineInstr *MI, unsigned OpNo) - { - O << (unsigned short)MI->getOperand(OpNo).getImm(); - } - - void - printU32ImmOperand(const MachineInstr *MI, unsigned OpNo) - { - O << (unsigned)MI->getOperand(OpNo).getImm(); - } - - void - printMemRegReg(const MachineInstr *MI, unsigned OpNo) { - // When used as the base register, r0 reads constant zero rather than - // the value contained in the register. For this reason, the darwin - // assembler requires that we print r0 as 0 (no r) when used as the base. - const MachineOperand &MO = MI->getOperand(OpNo); - O << TM.getRegisterInfo()->get(MO.getReg()).AsmName; - O << ", "; - printOperand(MI, OpNo+1); - } - - void - printU18ImmOperand(const MachineInstr *MI, unsigned OpNo) - { - unsigned int value = MI->getOperand(OpNo).getImm(); - assert(value <= (1 << 19) - 1 && "Invalid u18 argument"); - O << value; - } - - void - printS10ImmOperand(const MachineInstr *MI, unsigned OpNo) - { - short value = (short) (((int) MI->getOperand(OpNo).getImm() << 16) - >> 16); - assert((value >= -(1 << 9) && value <= (1 << 9) - 1) - && "Invalid s10 argument"); - O << value; - } - - void - printU10ImmOperand(const MachineInstr *MI, unsigned OpNo) - { - short value = (short) (((int) MI->getOperand(OpNo).getImm() << 16) - >> 16); - assert((value <= (1 << 10) - 1) && "Invalid u10 argument"); - O << value; - } - - void - printMemRegImmS10(const MachineInstr *MI, unsigned OpNo) - { - const MachineOperand &MO = MI->getOperand(OpNo); - assert(MO.isImmediate() - && "printMemRegImmS10 first operand is not immedate"); - printS10ImmOperand(MI, OpNo); - O << "("; - printOperand(MI, OpNo+1); - O << ")"; - } - - void - printAddr256K(const MachineInstr *MI, unsigned OpNo) - { - /* Note: operand 1 is an offset or symbol name. */ - if (MI->getOperand(OpNo).isImmediate()) { - printS16ImmOperand(MI, OpNo); - } else { - printOp(MI->getOperand(OpNo)); - if (MI->getOperand(OpNo+1).isImmediate()) { - int displ = int(MI->getOperand(OpNo+1).getImm()); - if (displ > 0) - O << "+" << displ; - else if (displ < 0) - O << displ; - } - } - } - - void printCallOperand(const MachineInstr *MI, unsigned OpNo) { - printOp(MI->getOperand(OpNo)); - } - - void printPCRelativeOperand(const MachineInstr *MI, unsigned OpNo) { - printOp(MI->getOperand(OpNo)); - O << "-."; - } - - void printSymbolHi(const MachineInstr *MI, unsigned OpNo) { - if (MI->getOperand(OpNo).isImmediate()) { - printS16ImmOperand(MI, OpNo); - } else { - printOp(MI->getOperand(OpNo)); - O << "@h"; - } - } - - void printSymbolLo(const MachineInstr *MI, unsigned OpNo) { - if (MI->getOperand(OpNo).isImmediate()) { - printS16ImmOperand(MI, OpNo); - } else { - printOp(MI->getOperand(OpNo)); - O << "@l"; - } - } - - /// Print local store address - void printSymbolLSA(const MachineInstr *MI, unsigned OpNo) { - printOp(MI->getOperand(OpNo)); - } - - void printROTHNeg7Imm(const MachineInstr *MI, unsigned OpNo) { - if (MI->getOperand(OpNo).isImmediate()) { - int value = (int) MI->getOperand(OpNo).getImm(); - assert((value >= 0 && value < 16) - && "Invalid negated immediate rotate 7-bit argument"); - O << -value; - } else { - assert(0 &&"Invalid/non-immediate rotate amount in printRotateNeg7Imm"); - } - } - - void printROTNeg7Imm(const MachineInstr *MI, unsigned OpNo) { - if (MI->getOperand(OpNo).isImmediate()) { - int value = (int) MI->getOperand(OpNo).getImm(); - assert((value >= 0 && value < 32) - && "Invalid negated immediate rotate 7-bit argument"); - O << -value; - } else { - assert(0 &&"Invalid/non-immediate rotate amount in printRotateNeg7Imm"); - } - } - - virtual bool runOnMachineFunction(MachineFunction &F) = 0; - virtual bool doFinalization(Module &M) = 0; - }; - - /// LinuxAsmPrinter - SPU assembly printer, customized for Linux - struct VISIBILITY_HIDDEN LinuxAsmPrinter : public SPUAsmPrinter { - - DwarfWriter DW; - - LinuxAsmPrinter(std::ostream &O, SPUTargetMachine &TM, - const TargetAsmInfo *T) : - SPUAsmPrinter(O, TM, T), - DW(O, this, T) - { } - - virtual const char *getPassName() const { - return "STI CBEA SPU Assembly Printer"; - } - - bool runOnMachineFunction(MachineFunction &F); - bool doInitialization(Module &M); - bool doFinalization(Module &M); - - void getAnalysisUsage(AnalysisUsage &AU) const { - AU.setPreservesAll(); - AU.addRequired<MachineModuleInfo>(); - SPUAsmPrinter::getAnalysisUsage(AU); - } - - /// getSectionForFunction - Return the section that we should emit the - /// specified function body into. - virtual std::string getSectionForFunction(const Function &F) const; - }; -} // end of anonymous namespace - -// Include the auto-generated portion of the assembly writer -#include "SPUGenAsmWriter.inc" - -void SPUAsmPrinter::printOp(const MachineOperand &MO) { - switch (MO.getType()) { - case MachineOperand::MO_Immediate: - cerr << "printOp() does not handle immediate values\n"; - abort(); - return; - - case MachineOperand::MO_MachineBasicBlock: - printBasicBlockLabel(MO.getMBB()); - return; - case MachineOperand::MO_JumpTableIndex: - O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() - << '_' << MO.getIndex(); - return; - case MachineOperand::MO_ConstantPoolIndex: - O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() - << '_' << MO.getIndex(); - return; - case MachineOperand::MO_ExternalSymbol: - // Computing the address of an external symbol, not calling it. - if (TM.getRelocationModel() != Reloc::Static) { - std::string Name(TAI->getGlobalPrefix()); Name += MO.getSymbolName(); - GVStubs.insert(Name); - O << "L" << Name << "$non_lazy_ptr"; - return; - } - O << TAI->getGlobalPrefix() << MO.getSymbolName(); - return; - case MachineOperand::MO_GlobalAddress: { - // Computing the address of a global symbol, not calling it. - GlobalValue *GV = MO.getGlobal(); - std::string Name = Mang->getValueName(GV); - - // External or weakly linked global variables need non-lazily-resolved - // stubs - if (TM.getRelocationModel() != Reloc::Static) { - if (((GV->isDeclaration() || GV->hasWeakLinkage() || - GV->hasLinkOnceLinkage()))) { - GVStubs.insert(Name); - O << "L" << Name << "$non_lazy_ptr"; - return; - } - } - O << Name; - - if (GV->hasExternalWeakLinkage()) - ExtWeakSymbols.insert(GV); - return; - } - - default: - O << "<unknown operand type: " << MO.getType() << ">"; - return; - } -} - -/// PrintAsmOperand - Print out an operand for an inline asm expression. -/// -bool SPUAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, - unsigned AsmVariant, - const char *ExtraCode) { - // Does this asm operand have a single letter operand modifier? - if (ExtraCode && ExtraCode[0]) { - if (ExtraCode[1] != 0) return true; // Unknown modifier. - - switch (ExtraCode[0]) { - default: return true; // Unknown modifier. - case 'L': // Write second word of DImode reference. - // Verify that this operand has two consecutive registers. - if (!MI->getOperand(OpNo).isRegister() || - OpNo+1 == MI->getNumOperands() || - !MI->getOperand(OpNo+1).isRegister()) - return true; - ++OpNo; // Return the high-part. - break; - } - } - - printOperand(MI, OpNo); - return false; -} - -bool SPUAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, - unsigned OpNo, - unsigned AsmVariant, - const char *ExtraCode) { - if (ExtraCode && ExtraCode[0]) - return true; // Unknown modifier. - printMemRegReg(MI, OpNo); - return false; -} - -/// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax -/// to the current output stream. -/// -void SPUAsmPrinter::printMachineInstruction(const MachineInstr *MI) { - ++EmittedInsts; - printInstruction(MI); -} - - - -std::string LinuxAsmPrinter::getSectionForFunction(const Function &F) const { - switch (F.getLinkage()) { - default: assert(0 && "Unknown linkage type!"); - case Function::ExternalLinkage: - case Function::InternalLinkage: return TAI->getTextSection(); - case Function::WeakLinkage: - case Function::LinkOnceLinkage: - return ""; // Print nothing for the time being... - } -} - -/// runOnMachineFunction - This uses the printMachineInstruction() -/// method to print assembly for each instruction. -/// -bool -LinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF) -{ - DW.SetModuleInfo(&getAnalysis<MachineModuleInfo>()); - - SetupMachineFunction(MF); - O << "\n\n"; - - // Print out constants referenced by the function - EmitConstantPool(MF.getConstantPool()); - - // Print out labels for the function. - const Function *F = MF.getFunction(); - - SwitchToTextSection(getSectionForFunction(*F).c_str(), F); - EmitAlignment(3, F); - - switch (F->getLinkage()) { - default: assert(0 && "Unknown linkage type!"); - case Function::InternalLinkage: // Symbols default to internal. - break; - case Function::ExternalLinkage: - O << "\t.global\t" << CurrentFnName << "\n" - << "\t.type\t" << CurrentFnName << ", @function\n"; - break; - case Function::WeakLinkage: - case Function::LinkOnceLinkage: - O << "\t.global\t" << CurrentFnName << "\n"; - O << "\t.weak_definition\t" << CurrentFnName << "\n"; - break; - } - O << CurrentFnName << ":\n"; - - // Emit pre-function debug information. - DW.BeginFunction(&MF); - - // Print out code for the function. - for (MachineFunction::const_iterator I = MF.begin(), E = MF.end(); - I != E; ++I) { - // Print a label for the basic block. - if (I != MF.begin()) { - printBasicBlockLabel(I, true, true); - O << '\n'; - } - for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end(); - II != E; ++II) { - // Print the assembly for the instruction. - printMachineInstruction(II); - } - } - - O << "\t.size\t" << CurrentFnName << ",.-" << CurrentFnName << "\n"; - - // Print out jump tables referenced by the function. - EmitJumpTableInfo(MF.getJumpTableInfo(), MF); - - // Emit post-function debug information. - DW.EndFunction(); - - // We didn't modify anything. - return false; -} - - -bool LinuxAsmPrinter::doInitialization(Module &M) { - bool Result = AsmPrinter::doInitialization(M); - SwitchToTextSection(TAI->getTextSection()); - // Emit initial debug information. - DW.BeginModule(&M); - return Result; -} - -bool LinuxAsmPrinter::doFinalization(Module &M) { - const TargetData *TD = TM.getTargetData(); - - // Print out module-level global variables here. - for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); - I != E; ++I) { - if (!I->hasInitializer()) continue; // External global require no code - - // Check to see if this is a special global used by LLVM, if so, emit it. - if (EmitSpecialLLVMGlobal(I)) - continue; - - std::string name = Mang->getValueName(I); - Constant *C = I->getInitializer(); - unsigned Size = TD->getTypeStoreSize(C->getType()); - unsigned Align = TD->getPreferredAlignmentLog(I); - - if (C->isNullValue() && /* FIXME: Verify correct */ - (I->hasInternalLinkage() || I->hasWeakLinkage() || - I->hasLinkOnceLinkage() || - (I->hasExternalLinkage() && !I->hasSection()))) { - if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it. - if (I->hasExternalLinkage()) { - // External linkage globals -> .bss section - // FIXME: Want to set the global variable's section so that - // SwitchToDataSection emits the ".section" directive - SwitchToDataSection("\t.section\t.bss", I); - O << "\t.global\t" << name << '\n'; - O << "\t.align\t" << Align << '\n'; - O << "\t.type\t" << name << ", @object\n"; - O << "\t.size\t" << name << ", " << Size << '\n'; - O << name << ":\n"; - O << "\t.zero\t" << Size; - } else if (I->hasInternalLinkage()) { - SwitchToDataSection("\t.data", I); - O << ".local " << name << "\n"; - O << TAI->getCOMMDirective() << name << "," << Size << "," << Align << "\n"; - } else { - SwitchToDataSection("\t.data", I); - O << ".comm " << name << "," << Size; - } - O << "\t\t# '" << I->getName() << "'\n"; - } else { - switch (I->getLinkage()) { - case GlobalValue::LinkOnceLinkage: - case GlobalValue::WeakLinkage: - O << "\t.global " << name << '\n' - << "\t.weak_definition " << name << '\n'; - SwitchToDataSection(".section __DATA,__datacoal_nt,coalesced", I); - break; - case GlobalValue::AppendingLinkage: - // FIXME: appending linkage variables should go into a section of - // their name or something. For now, just emit them as external. - case GlobalValue::ExternalLinkage: - // If external or appending, declare as a global symbol - O << "\t.global " << name << "\n"; - // FALL THROUGH - case GlobalValue::InternalLinkage: - if (I->isConstant()) { - const ConstantArray *CVA = dyn_cast<ConstantArray>(C); - if (TAI->getCStringSection() && CVA && CVA->isCString()) { - SwitchToDataSection(TAI->getCStringSection(), I); - break; - } - } - - SwitchToDataSection("\t.data", I); - break; - default: - cerr << "Unknown linkage type!"; - abort(); - } - - EmitAlignment(Align, I); - O << name << ":\t\t\t\t# '" << I->getName() << "'\n"; - - // If the initializer is a extern weak symbol, remember to emit the weak - // reference! - if (const GlobalValue *GV = dyn_cast<GlobalValue>(C)) - if (GV->hasExternalWeakLinkage()) - ExtWeakSymbols.insert(GV); - - EmitGlobalConstant(C); - O << '\n'; - } - } - - // Output stubs for dynamically-linked functions - if (TM.getRelocationModel() == Reloc::PIC_) { - for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end(); - i != e; ++i) { - SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs," - "pure_instructions,32"); - EmitAlignment(4); - O << "L" << *i << "$stub:\n"; - O << "\t.indirect_symbol " << *i << "\n"; - O << "\tmflr r0\n"; - O << "\tbcl 20,31,L0$" << *i << "\n"; - O << "L0$" << *i << ":\n"; - O << "\tmflr r11\n"; - O << "\taddis r11,r11,ha16(L" << *i << "$lazy_ptr-L0$" << *i << ")\n"; - O << "\tmtlr r0\n"; - O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr-L0$" << *i << ")(r11)\n"; - O << "\tmtctr r12\n"; - O << "\tbctr\n"; - SwitchToDataSection(".lazy_symbol_pointer"); - O << "L" << *i << "$lazy_ptr:\n"; - O << "\t.indirect_symbol " << *i << "\n"; - O << "\t.long dyld_stub_binding_helper\n"; - } - } else { - for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end(); - i != e; ++i) { - SwitchToTextSection(".section __TEXT,__symbol_stub1,symbol_stubs," - "pure_instructions,16"); - EmitAlignment(4); - O << "L" << *i << "$stub:\n"; - O << "\t.indirect_symbol " << *i << "\n"; - O << "\tlis r11,ha16(L" << *i << "$lazy_ptr)\n"; - O << "\tlwzu r12,lo16(L" << *i << "$lazy_ptr)(r11)\n"; - O << "\tmtctr r12\n"; - O << "\tbctr\n"; - SwitchToDataSection(".lazy_symbol_pointer"); - O << "L" << *i << "$lazy_ptr:\n"; - O << "\t.indirect_symbol " << *i << "\n"; - O << "\t.long dyld_stub_binding_helper\n"; - } - } - - O << "\n"; - - // Output stubs for external and common global variables. - if (GVStubs.begin() != GVStubs.end()) { - SwitchToDataSection(".non_lazy_symbol_pointer"); - for (std::set<std::string>::iterator I = GVStubs.begin(), - E = GVStubs.end(); I != E; ++I) { - O << "L" << *I << "$non_lazy_ptr:\n"; - O << "\t.indirect_symbol " << *I << "\n"; - O << "\t.long\t0\n"; - } - } - - // Emit initial debug information. - DW.EndModule(); - - // Emit ident information - O << "\t.ident\t\"(llvm 2.2+) STI CBEA Cell SPU backend\"\n"; - - return AsmPrinter::doFinalization(M); -} - - - -/// createSPUCodePrinterPass - Returns a pass that prints the Cell SPU -/// assembly code for a MachineFunction to the given output stream, in a format -/// that the Linux SPU assembler can deal with. -/// -FunctionPass *llvm::createSPUAsmPrinterPass(std::ostream &o, - SPUTargetMachine &tm) { - return new LinuxAsmPrinter(o, tm, tm.getTargetAsmInfo()); -} - |