2006-02-05 05:50:24 +00:00
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//===-- SparcAsmPrinter.cpp - Sparc LLVM assembly writer ------------------===//
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2005-04-21 23:30:14 +00:00
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//
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2004-03-04 06:00:41 +00:00
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// The LLVM Compiler Infrastructure
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//
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2007-12-29 20:36:04 +00:00
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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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2005-04-21 23:30:14 +00:00
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//
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2004-03-04 06:00:41 +00:00
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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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2006-02-05 05:50:24 +00:00
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// of machine-dependent LLVM code to GAS-format SPARC assembly language.
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2004-03-04 06:00:41 +00:00
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//
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//===----------------------------------------------------------------------===//
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2006-12-19 22:59:26 +00:00
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#define DEBUG_TYPE "asm-printer"
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2006-02-05 05:50:24 +00:00
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#include "Sparc.h"
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#include "SparcInstrInfo.h"
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2009-06-19 15:48:10 +00:00
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#include "SparcTargetMachine.h"
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2005-12-17 07:04:29 +00:00
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#include "llvm/CodeGen/AsmPrinter.h"
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2004-03-04 06:00:41 +00:00
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#include "llvm/CodeGen/MachineInstr.h"
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2009-08-22 20:48:53 +00:00
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#include "llvm/MC/MCAsmInfo.h"
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2010-02-10 00:36:00 +00:00
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#include "llvm/MC/MCStreamer.h"
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2009-09-13 17:14:04 +00:00
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#include "llvm/MC/MCSymbol.h"
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2010-03-12 21:19:23 +00:00
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#include "llvm/Target/Mangler.h"
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2009-07-15 20:24:03 +00:00
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#include "llvm/Target/TargetRegistry.h"
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2010-04-04 06:12:20 +00:00
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#include "llvm/ADT/SmallString.h"
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2004-09-02 02:37:43 +00:00
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#include "llvm/ADT/StringExtras.h"
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2010-04-04 08:18:47 +00:00
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#include "llvm/Support/raw_ostream.h"
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2004-03-04 06:00:41 +00:00
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using namespace llvm;
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2006-12-19 22:59:26 +00:00
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namespace {
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2009-10-25 06:33:48 +00:00
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class SparcAsmPrinter : public AsmPrinter {
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2009-02-24 08:30:20 +00:00
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public:
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2010-04-04 08:18:47 +00:00
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explicit SparcAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
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: AsmPrinter(TM, Streamer) {}
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2004-03-04 06:00:41 +00:00
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virtual const char *getPassName() const {
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2006-02-05 05:50:24 +00:00
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return "Sparc Assembly Printer";
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2004-03-04 06:00:41 +00:00
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}
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2010-04-04 04:47:45 +00:00
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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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2006-02-10 07:35:42 +00:00
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const char *Modifier = 0);
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2010-04-04 04:47:45 +00:00
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void printCCOperand(const MachineInstr *MI, int opNum, raw_ostream &OS);
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2006-01-31 06:49:09 +00:00
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2010-01-28 01:48:52 +00:00
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virtual void EmitInstruction(const MachineInstr *MI) {
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2010-04-04 06:12:20 +00:00
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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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2010-01-28 01:48:52 +00:00
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}
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2010-04-04 04:47:45 +00:00
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void printInstruction(const MachineInstr *MI, raw_ostream &OS);// autogen'd.
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2009-09-13 20:19:22 +00:00
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static const char *getRegisterName(unsigned RegNo);
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2009-09-13 20:08:00 +00:00
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2008-10-10 10:15:03 +00:00
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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2010-04-04 05:29:35 +00:00
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O);
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2008-10-10 10:15:03 +00:00
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bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
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2010-04-04 05:29:35 +00:00
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O);
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2009-09-15 17:46:24 +00:00
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2010-04-04 04:47:45 +00:00
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bool printGetPCX(const MachineInstr *MI, unsigned OpNo, raw_ostream &OS);
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2010-02-17 18:52:56 +00:00
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virtual bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB)
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const;
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2004-03-04 06:00:41 +00:00
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};
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} // end of anonymous namespace
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2006-02-05 05:50:24 +00:00
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#include "SparcGenAsmWriter.inc"
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2005-12-16 06:34:17 +00:00
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2010-04-04 04:47:45 +00:00
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void SparcAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O) {
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2004-06-15 19:52:59 +00:00
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const MachineOperand &MO = MI->getOperand (opNum);
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bool CloseParen = false;
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2008-10-03 15:45:36 +00:00
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if (MI->getOpcode() == SP::SETHIi && !MO.isReg() && !MO.isImm()) {
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2004-06-15 19:52:59 +00:00
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O << "%hi(";
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CloseParen = true;
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2008-10-03 15:45:36 +00:00
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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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2004-06-15 19:52:59 +00:00
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O << "%lo(";
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CloseParen = true;
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}
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2004-03-05 08:39:09 +00:00
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switch (MO.getType()) {
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2006-05-04 18:05:43 +00:00
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case MachineOperand::MO_Register:
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2009-09-13 20:31:40 +00:00
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O << "%" << LowercaseString(getRegisterName(MO.getReg()));
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2004-06-15 19:52:59 +00:00
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break;
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2004-03-05 08:39:09 +00:00
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2006-05-04 17:21:20 +00:00
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case MachineOperand::MO_Immediate:
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2007-12-30 20:49:49 +00:00
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O << (int)MO.getImm();
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2004-06-15 19:52:59 +00:00
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break;
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2006-04-22 18:53:45 +00:00
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case MachineOperand::MO_MachineBasicBlock:
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2010-03-13 21:04:28 +00:00
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O << *MO.getMBB()->getSymbol();
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2004-06-17 19:39:23 +00:00
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return;
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2004-03-05 08:39:09 +00:00
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case MachineOperand::MO_GlobalAddress:
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2010-03-12 21:19:23 +00:00
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O << *Mang->getSymbol(MO.getGlobal());
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2004-06-15 19:52:59 +00:00
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break;
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2004-03-05 08:39:09 +00:00
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case MachineOperand::MO_ExternalSymbol:
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O << MO.getSymbolName();
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2004-06-15 19:52:59 +00:00
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break;
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2004-06-27 22:50:44 +00:00
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case MachineOperand::MO_ConstantPoolIndex:
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2009-08-22 21:43:10 +00:00
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O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
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2007-12-30 23:10:15 +00:00
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<< MO.getIndex();
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2004-06-27 22:50:44 +00:00
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break;
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2004-03-05 08:39:09 +00:00
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default:
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2009-07-14 16:55:14 +00:00
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llvm_unreachable("<unknown operand type>");
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2004-03-05 08:39:09 +00:00
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}
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2004-06-15 19:52:59 +00:00
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if (CloseParen) O << ")";
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2004-03-05 08:39:09 +00:00
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}
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2006-02-10 07:35:42 +00:00
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void SparcAsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
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2010-04-04 04:47:45 +00:00
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raw_ostream &O, const char *Modifier) {
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printOperand(MI, opNum, O);
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2008-08-07 09:51:25 +00:00
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2006-02-10 07:35:42 +00:00
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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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2010-04-04 04:47:45 +00:00
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printOperand(MI, opNum+1, O);
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2006-02-10 07:35:42 +00:00
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return;
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}
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2008-08-07 09:51:25 +00:00
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2008-10-03 15:45:36 +00:00
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if (MI->getOperand(opNum+1).isReg() &&
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2006-02-05 05:50:24 +00:00
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MI->getOperand(opNum+1).getReg() == SP::G0)
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2005-12-18 02:37:35 +00:00
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return; // don't print "+%g0"
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2008-10-03 15:45:36 +00:00
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if (MI->getOperand(opNum+1).isImm() &&
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2007-12-30 20:49:49 +00:00
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MI->getOperand(opNum+1).getImm() == 0)
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2005-12-18 02:37:35 +00:00
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return; // don't print "+0"
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2008-08-07 09:51:25 +00:00
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2005-12-17 20:04:49 +00:00
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O << "+";
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2008-10-03 15:45:36 +00:00
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if (MI->getOperand(opNum+1).isGlobal() ||
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MI->getOperand(opNum+1).isCPI()) {
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Teach the addressing mode stuff to fold "%lo" into 'ri' addressing modes,
allowing us to compile this:
to this:
%G1 = external global int
%G2 = external global int
void %test() {
%X = load int* %G1
store int %X, int* %G2
ret void
}
test:
save -96, %sp, %sp
sethi %hi(G1), %l0
ld [%l0+%lo(G1)], %l0
sethi %hi(G2), %l1
st %l0, [%l1+%lo(G2)]
restore %g0, %g0, %g0
retl
nop
instead of this:
test:
save -96, %sp, %sp
sethi %hi(G1), %l0
or %g0, %lo(G1), %l1
ld [%l1+%l0], %l0
sethi %hi(G2), %l1
or %g0, %lo(G2), %l2
st %l0, [%l2+%l1]
restore %g0, %g0, %g0
retl
nop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24812 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-18 02:27:00 +00:00
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O << "%lo(";
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2010-04-04 04:47:45 +00:00
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printOperand(MI, opNum+1, O);
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Teach the addressing mode stuff to fold "%lo" into 'ri' addressing modes,
allowing us to compile this:
to this:
%G1 = external global int
%G2 = external global int
void %test() {
%X = load int* %G1
store int %X, int* %G2
ret void
}
test:
save -96, %sp, %sp
sethi %hi(G1), %l0
ld [%l0+%lo(G1)], %l0
sethi %hi(G2), %l1
st %l0, [%l1+%lo(G2)]
restore %g0, %g0, %g0
retl
nop
instead of this:
test:
save -96, %sp, %sp
sethi %hi(G1), %l0
or %g0, %lo(G1), %l1
ld [%l1+%l0], %l0
sethi %hi(G2), %l1
or %g0, %lo(G2), %l2
st %l0, [%l2+%l1]
restore %g0, %g0, %g0
retl
nop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24812 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-18 02:27:00 +00:00
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O << ")";
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} else {
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2010-04-04 04:47:45 +00:00
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printOperand(MI, opNum+1, O);
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Teach the addressing mode stuff to fold "%lo" into 'ri' addressing modes,
allowing us to compile this:
to this:
%G1 = external global int
%G2 = external global int
void %test() {
%X = load int* %G1
store int %X, int* %G2
ret void
}
test:
save -96, %sp, %sp
sethi %hi(G1), %l0
ld [%l0+%lo(G1)], %l0
sethi %hi(G2), %l1
st %l0, [%l1+%lo(G2)]
restore %g0, %g0, %g0
retl
nop
instead of this:
test:
save -96, %sp, %sp
sethi %hi(G1), %l0
or %g0, %lo(G1), %l1
ld [%l1+%l0], %l0
sethi %hi(G2), %l1
or %g0, %lo(G2), %l2
st %l0, [%l2+%l1]
restore %g0, %g0, %g0
retl
nop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24812 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-18 02:27:00 +00:00
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}
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2005-12-17 20:04:49 +00:00
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}
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2010-04-04 04:47:45 +00:00
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bool SparcAsmPrinter::printGetPCX(const MachineInstr *MI, unsigned opNum,
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raw_ostream &O) {
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2009-09-15 17:46:24 +00:00
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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: assert(0 && "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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operand = "%" + LowercaseString(getRegisterName(MO.getReg()));
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break;
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}
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2010-02-17 18:57:19 +00:00
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unsigned mfNum = MI->getParent()->getParent()->getFunctionNumber();
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2010-01-27 00:20:02 +00:00
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unsigned bbNum = MI->getParent()->getNumber();
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2009-09-15 17:46:24 +00:00
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2010-02-17 18:57:19 +00:00
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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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2009-09-15 17:46:24 +00:00
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O << "\t sethi\t"
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2010-02-17 18:57:19 +00:00
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<< "%hi(_GLOBAL_OFFSET_TABLE_+(.-.LLGETPCH" << mfNum << '_' << bbNum << ")), "
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2009-09-15 17:46:24 +00:00
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<< operand << '\n' ;
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2010-02-17 18:57:19 +00:00
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O << ".LLGETPC" << mfNum << '_' << bbNum << ":\n" ;
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2009-09-15 17:46:24 +00:00
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O << "\tor\t" << operand
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2010-04-04 04:47:45 +00:00
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<< ", %lo(_GLOBAL_OFFSET_TABLE_+(.-.LLGETPCH" << mfNum << '_' << bbNum
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<< ")), " << operand << '\n';
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2009-09-15 17:46:24 +00:00
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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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2010-04-04 04:47:45 +00:00
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void SparcAsmPrinter::printCCOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O) {
|
2007-12-30 20:49:49 +00:00
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int CC = (int)MI->getOperand(opNum).getImm();
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2006-02-05 05:50:24 +00:00
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O << SPARCCondCodeToString((SPCC::CondCodes)CC);
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2006-01-31 06:49:09 +00:00
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}
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2008-10-10 10:15:03 +00:00
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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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2010-04-04 05:29:35 +00:00
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const char *ExtraCode,
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raw_ostream &O) {
|
2008-10-10 20:29:50 +00:00
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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: return true; // Unknown modifier.
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case 'r':
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break;
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}
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}
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2008-10-10 10:15:03 +00:00
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2010-04-04 04:47:45 +00:00
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printOperand(MI, OpNo, O);
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2008-10-10 10:15:03 +00:00
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return false;
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}
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bool SparcAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
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2010-04-04 05:29:35 +00:00
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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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2008-10-10 10:15:03 +00:00
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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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2010-04-04 04:47:45 +00:00
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printMemOperand(MI, OpNo, O);
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2008-10-10 10:15:03 +00:00
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O << ']';
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return false;
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}
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2009-06-16 20:12:29 +00:00
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2010-02-17 18:52:56 +00:00
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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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2010-03-06 07:02:28 +00:00
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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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2010-02-17 18:52:56 +00:00
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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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2010-03-06 07:02:28 +00:00
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// Check if the last terminator is an unconditional branch.
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2010-02-17 18:52:56 +00:00
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MachineBasicBlock::const_iterator I = Pred->end();
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2010-03-06 07:02:28 +00:00
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while (I != Pred->begin() && !(--I)->getDesc().isTerminator())
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; // Noop
|
2010-02-17 18:52:56 +00:00
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return I == Pred->end() || !I->getDesc().isBarrier();
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}
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|
2009-06-23 23:59:40 +00:00
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// Force static initialization.
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2009-07-15 20:24:03 +00:00
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extern "C" void LLVMInitializeSparcAsmPrinter() {
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2009-07-25 06:49:55 +00:00
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RegisterAsmPrinter<SparcAsmPrinter> X(TheSparcTarget);
|
2010-02-04 06:34:01 +00:00
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RegisterAsmPrinter<SparcAsmPrinter> Y(TheSparcV9Target);
|
2009-07-15 20:24:03 +00:00
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}
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