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up to r158925 were handled as processor specific. Making them generic and putting tests for these modifiers in the CodeGen/Generic directory caused a number of targets to fail. This commit addresses that problem by having the targets call the generic routine for generic modifiers that they don't currently have explicit code for. For now only generic print operands 'c' and 'n' are supported.vi Affected files: test/CodeGen/Generic/asm-large-immediate.ll lib/Target/PowerPC/PPCAsmPrinter.cpp lib/Target/NVPTX/NVPTXAsmPrinter.cpp lib/Target/ARM/ARMAsmPrinter.cpp lib/Target/XCore/XCoreAsmPrinter.cpp lib/Target/X86/X86AsmPrinter.cpp lib/Target/Hexagon/HexagonAsmPrinter.cpp lib/Target/CellSPU/SPUAsmPrinter.cpp lib/Target/Sparc/SparcAsmPrinter.cpp lib/Target/MBlaze/MBlazeAsmPrinter.cpp lib/Target/Mips/MipsAsmPrinter.cpp MSP430 isn't represented because it did not even run with the long existing 'c' modifier and it was not apparent what needs to be done to get it inline asm ready. Contributer: Jack Carter git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159203 91177308-0d34-0410-b5e6-96231b3b80d8
262 lines
8.8 KiB
C++
262 lines
8.8 KiB
C++
//===-- SparcAsmPrinter.cpp - Sparc LLVM assembly writer ------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains a printer that converts from our internal representation
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// of machine-dependent LLVM code to GAS-format SPARC assembly language.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "asm-printer"
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#include "Sparc.h"
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#include "SparcInstrInfo.h"
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#include "SparcTargetMachine.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Target/Mangler.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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class SparcAsmPrinter : public AsmPrinter {
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public:
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explicit SparcAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
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: AsmPrinter(TM, Streamer) {}
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virtual const char *getPassName() const {
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return "Sparc Assembly Printer";
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}
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void printOperand(const MachineInstr *MI, int opNum, raw_ostream &OS);
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void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &OS,
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const char *Modifier = 0);
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void printCCOperand(const MachineInstr *MI, int opNum, raw_ostream &OS);
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virtual void EmitInstruction(const MachineInstr *MI) {
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SmallString<128> Str;
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raw_svector_ostream OS(Str);
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printInstruction(MI, OS);
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OutStreamer.EmitRawText(OS.str());
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}
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void printInstruction(const MachineInstr *MI, raw_ostream &OS);// autogen'd.
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static const char *getRegisterName(unsigned RegNo);
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O);
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bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O);
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bool printGetPCX(const MachineInstr *MI, unsigned OpNo, raw_ostream &OS);
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virtual bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB)
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const;
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virtual MachineLocation getDebugValueLocation(const MachineInstr *MI) const;
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};
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} // end of anonymous namespace
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#include "SparcGenAsmWriter.inc"
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void SparcAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O) {
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const MachineOperand &MO = MI->getOperand (opNum);
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bool CloseParen = false;
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if (MI->getOpcode() == SP::SETHIi && !MO.isReg() && !MO.isImm()) {
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O << "%hi(";
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CloseParen = true;
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} else if ((MI->getOpcode() == SP::ORri || MI->getOpcode() == SP::ADDri) &&
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!MO.isReg() && !MO.isImm()) {
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O << "%lo(";
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CloseParen = true;
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}
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switch (MO.getType()) {
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case MachineOperand::MO_Register:
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O << "%" << StringRef(getRegisterName(MO.getReg())).lower();
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break;
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case MachineOperand::MO_Immediate:
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O << (int)MO.getImm();
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break;
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case MachineOperand::MO_MachineBasicBlock:
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O << *MO.getMBB()->getSymbol();
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return;
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case MachineOperand::MO_GlobalAddress:
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O << *Mang->getSymbol(MO.getGlobal());
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break;
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case MachineOperand::MO_ExternalSymbol:
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O << MO.getSymbolName();
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break;
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case MachineOperand::MO_ConstantPoolIndex:
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O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
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<< MO.getIndex();
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break;
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default:
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llvm_unreachable("<unknown operand type>");
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}
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if (CloseParen) O << ")";
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}
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void SparcAsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O, const char *Modifier) {
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printOperand(MI, opNum, O);
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// If this is an ADD operand, emit it like normal operands.
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if (Modifier && !strcmp(Modifier, "arith")) {
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O << ", ";
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printOperand(MI, opNum+1, O);
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return;
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}
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if (MI->getOperand(opNum+1).isReg() &&
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MI->getOperand(opNum+1).getReg() == SP::G0)
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return; // don't print "+%g0"
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if (MI->getOperand(opNum+1).isImm() &&
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MI->getOperand(opNum+1).getImm() == 0)
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return; // don't print "+0"
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O << "+";
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if (MI->getOperand(opNum+1).isGlobal() ||
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MI->getOperand(opNum+1).isCPI()) {
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O << "%lo(";
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printOperand(MI, opNum+1, O);
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O << ")";
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} else {
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printOperand(MI, opNum+1, O);
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}
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}
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bool SparcAsmPrinter::printGetPCX(const MachineInstr *MI, unsigned opNum,
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raw_ostream &O) {
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std::string operand = "";
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const MachineOperand &MO = MI->getOperand(opNum);
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switch (MO.getType()) {
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default: llvm_unreachable("Operand is not a register");
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case MachineOperand::MO_Register:
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assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
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"Operand is not a physical register ");
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assert(MO.getReg() != SP::O7 &&
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"%o7 is assigned as destination for getpcx!");
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operand = "%" + StringRef(getRegisterName(MO.getReg())).lower();
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break;
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}
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unsigned mfNum = MI->getParent()->getParent()->getFunctionNumber();
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unsigned bbNum = MI->getParent()->getNumber();
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O << '\n' << ".LLGETPCH" << mfNum << '_' << bbNum << ":\n";
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O << "\tcall\t.LLGETPC" << mfNum << '_' << bbNum << '\n' ;
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O << "\t sethi\t"
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<< "%hi(_GLOBAL_OFFSET_TABLE_+(.-.LLGETPCH" << mfNum << '_' << bbNum
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<< ")), " << operand << '\n' ;
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O << ".LLGETPC" << mfNum << '_' << bbNum << ":\n" ;
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O << "\tor\t" << operand
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<< ", %lo(_GLOBAL_OFFSET_TABLE_+(.-.LLGETPCH" << mfNum << '_' << bbNum
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<< ")), " << operand << '\n';
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O << "\tadd\t" << operand << ", %o7, " << operand << '\n';
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return true;
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}
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void SparcAsmPrinter::printCCOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O) {
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int CC = (int)MI->getOperand(opNum).getImm();
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O << SPARCCondCodeToString((SPCC::CondCodes)CC);
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}
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/// PrintAsmOperand - Print out an operand for an inline asm expression.
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///
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bool SparcAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant,
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const char *ExtraCode,
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raw_ostream &O) {
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if (ExtraCode && ExtraCode[0]) {
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if (ExtraCode[1] != 0) return true; // Unknown modifier.
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switch (ExtraCode[0]) {
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default:
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// See if this is a generic print operand
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return AsmPrinter::PrintAsmOperand(MI, OpNo, AsmVariant, ExtraCode, O);
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case 'r':
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break;
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}
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}
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printOperand(MI, OpNo, O);
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return false;
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}
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bool SparcAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
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unsigned OpNo, unsigned AsmVariant,
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const char *ExtraCode,
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raw_ostream &O) {
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if (ExtraCode && ExtraCode[0])
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return true; // Unknown modifier
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O << '[';
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printMemOperand(MI, OpNo, O);
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O << ']';
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return false;
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}
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/// isBlockOnlyReachableByFallthough - Return true if the basic block has
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/// exactly one predecessor and the control transfer mechanism between
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/// the predecessor and this block is a fall-through.
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///
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/// This overrides AsmPrinter's implementation to handle delay slots.
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bool SparcAsmPrinter::
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isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) const {
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// If this is a landing pad, it isn't a fall through. If it has no preds,
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// then nothing falls through to it.
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if (MBB->isLandingPad() || MBB->pred_empty())
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return false;
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// If there isn't exactly one predecessor, it can't be a fall through.
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MachineBasicBlock::const_pred_iterator PI = MBB->pred_begin(), PI2 = PI;
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++PI2;
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if (PI2 != MBB->pred_end())
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return false;
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// The predecessor has to be immediately before this block.
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const MachineBasicBlock *Pred = *PI;
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if (!Pred->isLayoutSuccessor(MBB))
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return false;
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// Check if the last terminator is an unconditional branch.
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MachineBasicBlock::const_iterator I = Pred->end();
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while (I != Pred->begin() && !(--I)->isTerminator())
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; // Noop
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return I == Pred->end() || !I->isBarrier();
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}
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MachineLocation SparcAsmPrinter::
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getDebugValueLocation(const MachineInstr *MI) const {
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assert(MI->getNumOperands() == 4 && "Invalid number of operands!");
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assert(MI->getOperand(0).isReg() && MI->getOperand(1).isImm() &&
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"Unexpected MachineOperand types");
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return MachineLocation(MI->getOperand(0).getReg(),
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MI->getOperand(1).getImm());
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}
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// Force static initialization.
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extern "C" void LLVMInitializeSparcAsmPrinter() {
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RegisterAsmPrinter<SparcAsmPrinter> X(TheSparcTarget);
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RegisterAsmPrinter<SparcAsmPrinter> Y(TheSparcV9Target);
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}
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