From 522e9a0435ebba7b25802992031d0657654c281c Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Wed, 2 Sep 2009 17:35:12 +0000 Subject: [PATCH] split mcinst lowering stuff out to its own file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80806 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/AsmPrinter/CMakeLists.txt | 3 +- .../X86/AsmPrinter/X86ATTAsmPrinter.cpp | 265 +--------------- lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h | 4 +- lib/Target/X86/AsmPrinter/X86MCInstLower.cpp | 283 ++++++++++++++++++ 4 files changed, 293 insertions(+), 262 deletions(-) create mode 100644 lib/Target/X86/AsmPrinter/X86MCInstLower.cpp diff --git a/lib/Target/X86/AsmPrinter/CMakeLists.txt b/lib/Target/X86/AsmPrinter/CMakeLists.txt index a28c8266b82..1a338e76db6 100644 --- a/lib/Target/X86/AsmPrinter/CMakeLists.txt +++ b/lib/Target/X86/AsmPrinter/CMakeLists.txt @@ -4,6 +4,7 @@ add_llvm_library(LLVMX86AsmPrinter X86ATTAsmPrinter.cpp X86ATTInstPrinter.cpp X86AsmPrinter.cpp + X86MCInstLower.cpp X86IntelAsmPrinter.cpp ) -add_dependencies(LLVMX86AsmPrinter X86CodeGenTable_gen) \ No newline at end of file +add_dependencies(LLVMX86AsmPrinter X86CodeGenTable_gen) diff --git a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp index 53a443d6d8a..70f6a27022f 100644 --- a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp +++ b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp @@ -19,21 +19,15 @@ #include "X86COFF.h" #include "X86MachineFunctionInfo.h" #include "X86TargetMachine.h" -#include "X86MCAsmInfo.h" #include "llvm/CallingConv.h" #include "llvm/DerivedTypes.h" #include "llvm/Module.h" #include "llvm/Type.h" -#include "llvm/ADT/SmallString.h" #include "llvm/ADT/Statistic.h" #include "llvm/ADT/StringExtras.h" #include "llvm/Assembly/Writer.h" -#include "llvm/MC/MCContext.h" -#include "llvm/MC/MCExpr.h" -#include "llvm/MC/MCInst.h" -#include "llvm/MC/MCSectionMachO.h" #include "llvm/MC/MCStreamer.h" -#include "llvm/CodeGen/DwarfWriter.h" +#include "llvm/MC/MCSectionMachO.h" #include "llvm/CodeGen/MachineJumpTableInfo.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/ErrorHandling.h" @@ -64,20 +58,6 @@ void X86ATTAsmPrinter::PrintPICBaseSymbol() const { } } -MCSymbol *X86ATTAsmPrinter::GetPICBaseSymbol() { - // FIXME: the actual label generated doesn't matter here! Just mangle in - // something unique (the function number) with Private prefix. - std::string Name; - - if (Subtarget->isTargetDarwin()) { - Name = "L" + utostr(getFunctionNumber())+"$pb"; - } else { - assert(Subtarget->isTargetELF() && "Don't know how to print PIC label!"); - Name = ".Lllvm$" + utostr(getFunctionNumber())+".$piclabel"; - } - return OutContext.GetOrCreateSymbol(Name); -} - static X86MachineFunctionInfo calculateFunctionInfo(const Function *F, const TargetData *TD) { X86MachineFunctionInfo Info; @@ -710,154 +690,6 @@ bool X86ATTAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, return false; } -static void lower_lea64_32mem(MCInst *MI, unsigned OpNo) { - // Convert registers in the addr mode according to subreg64. - for (unsigned i = 0; i != 4; ++i) { - if (!MI->getOperand(i).isReg()) continue; - - unsigned Reg = MI->getOperand(i).getReg(); - if (Reg == 0) continue; - - MI->getOperand(i).setReg(getX86SubSuperRegister(Reg, MVT::i64)); - } -} - -/// LowerGlobalAddressOperand - Lower an MO_GlobalAddress operand to an -/// MCOperand. -MCOperand X86ATTAsmPrinter::LowerGlobalAddressOperand(const MachineOperand &MO){ - const GlobalValue *GV = MO.getGlobal(); - - const char *Suffix = ""; - if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) - Suffix = "$stub"; - else if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY || - MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE || - MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY || - MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE) - Suffix = "$non_lazy_ptr"; - - std::string Name = Mang->getMangledName(GV, Suffix, Suffix[0] != '\0'); - if (Subtarget->isTargetCygMing()) - DecorateCygMingName(Name, GV); - - // Handle dllimport linkage. - if (MO.getTargetFlags() == X86II::MO_DLLIMPORT) - Name = "__imp_" + Name; - - if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY || - MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE) - GVStubs[Name] = Mang->getMangledName(GV); - else if (MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY || - MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE) - HiddenGVStubs[Name] = Mang->getMangledName(GV); - else if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) - FnStubs[Name] = Mang->getMangledName(GV); - - - // Handle target operand flags. - // FIXME: This should be common between external symbols, constant pool etc. - MCSymbol *NegatedSymbol = 0; - - switch (MO.getTargetFlags()) { - default: - llvm_unreachable("Unknown target flag on GV operand"); - case X86II::MO_NO_FLAG: // No flag. - break; - case X86II::MO_DARWIN_NONLAZY: - case X86II::MO_DARWIN_HIDDEN_NONLAZY: - case X86II::MO_DLLIMPORT: - case X86II::MO_DARWIN_STUB: - // These affect the name of the symbol, not any suffix. - break; - case X86II::MO_GOT_ABSOLUTE_ADDRESS: - assert(0 && "Reloc mode unimp!"); - //O << " + [.-"; - //PrintPICBaseSymbol(); - //O << ']'; - break; - case X86II::MO_PIC_BASE_OFFSET: - case X86II::MO_DARWIN_NONLAZY_PIC_BASE: - case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: - // Subtract the pic base. - NegatedSymbol = GetPICBaseSymbol(); - break; - - // FIXME: These probably should be a modifier on the symbol or something?? - case X86II::MO_TLSGD: Name += "@TLSGD"; break; - case X86II::MO_GOTTPOFF: Name += "@GOTTPOFF"; break; - case X86II::MO_INDNTPOFF: Name += "@INDNTPOFF"; break; - case X86II::MO_TPOFF: Name += "@TPOFF"; break; - case X86II::MO_NTPOFF: Name += "@NTPOFF"; break; - case X86II::MO_GOTPCREL: Name += "@GOTPCREL"; break; - case X86II::MO_GOT: Name += "@GOT"; break; - case X86II::MO_GOTOFF: Name += "@GOTOFF"; break; - case X86II::MO_PLT: Name += "@PLT"; break; - } - - // Create a symbol for the name. - MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name); - // FIXME: We would like an efficient form for this, so we don't have to do a - // lot of extra uniquing. - const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, OutContext); - if (NegatedSymbol) - Expr = MCBinaryExpr::CreateSub(Expr, MCSymbolRefExpr::Create(NegatedSymbol, - OutContext), - OutContext); - if (MO.getOffset()) - Expr = MCBinaryExpr::CreateAdd(Expr, MCConstantExpr::Create(MO.getOffset(), - OutContext), - OutContext); - return MCOperand::CreateExpr(Expr); -} - -MCOperand X86ATTAsmPrinter:: -LowerExternalSymbolOperand(const MachineOperand &MO) { - std::string Name = Mang->makeNameProper(MO.getSymbolName()); - if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) { - FnStubs[Name+"$stub"] = Name; - Name += "$stub"; - } - - MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name); - // FIXME: We would like an efficient form for this, so we don't have to do a - // lot of extra uniquing. - const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, OutContext); - if (MO.getOffset()) - Expr = MCBinaryExpr::CreateAdd(Expr, - MCConstantExpr::Create(MO.getOffset(), - OutContext), - OutContext); - return MCOperand::CreateExpr(Expr); -} - -MCOperand X86ATTAsmPrinter::LowerJumpTableOperand(const MachineOperand &MO) { - SmallString<256> Name; - raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "JTI" - << getFunctionNumber() << '_' << MO.getIndex(); - - MCSymbol *NegatedSymbol = 0; - switch (MO.getTargetFlags()) { - default: - llvm_unreachable("Unknown target flag on GV operand"); - case X86II::MO_PIC_BASE_OFFSET: - case X86II::MO_DARWIN_NONLAZY_PIC_BASE: - case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: - // Subtract the pic base. - NegatedSymbol = GetPICBaseSymbol(); - break; - } - - // Create a symbol for the name. - MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name.str()); - // FIXME: We would like an efficient form for this, so we don't have to do a - // lot of extra uniquing. - const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, OutContext); - if (NegatedSymbol) - Expr = MCBinaryExpr::CreateSub(Expr, MCSymbolRefExpr::Create(NegatedSymbol, - OutContext), - OutContext); - return MCOperand::CreateExpr(Expr); -} /// printMachineInstruction -- Print out a single X86 LLVM instruction MI in @@ -866,98 +698,11 @@ MCOperand X86ATTAsmPrinter::LowerJumpTableOperand(const MachineOperand &MO) { void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) { ++EmittedInsts; - if (!NewAsmPrinter) { - // Call the autogenerated instruction printer routines. + // Call the autogenerated instruction printer routines. + if (NewAsmPrinter) + printInstructionThroughMCStreamer(MI); + else printInstruction(MI); - return; - } - - MCInst TmpInst; - - switch (MI->getOpcode()) { - case TargetInstrInfo::DBG_LABEL: - case TargetInstrInfo::EH_LABEL: - case TargetInstrInfo::GC_LABEL: - printLabel(MI); - return; - case TargetInstrInfo::INLINEASM: - O << '\t'; - printInlineAsm(MI); - return; - case TargetInstrInfo::IMPLICIT_DEF: - printImplicitDef(MI); - return; - case X86::MOVPC32r: { - // This is a pseudo op for a two instruction sequence with a label, which - // looks like: - // call "L1$pb" - // "L1$pb": - // popl %esi - - // Emit the call. - MCSymbol *PICBase = GetPICBaseSymbol(); - TmpInst.setOpcode(X86::CALLpcrel32); - // FIXME: We would like an efficient form for this, so we don't have to do a - // lot of extra uniquing. - TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr::Create(PICBase, - OutContext))); - printInstruction(&TmpInst); - - // Emit the label. - OutStreamer.EmitLabel(PICBase); - - // popl $reg - TmpInst.setOpcode(X86::POP32r); - TmpInst.getOperand(0) = MCOperand::CreateReg(MI->getOperand(0).getReg()); - printInstruction(&TmpInst); - return; - } - } - - TmpInst.setOpcode(MI->getOpcode()); - - for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { - const MachineOperand &MO = MI->getOperand(i); - - MCOperand MCOp; - switch (MO.getType()) { - default: - O.flush(); - errs() << "Cannot lower operand #" << i << " of :" << *MI; - llvm_unreachable("Unimp"); - case MachineOperand::MO_JumpTableIndex: - MCOp = LowerJumpTableOperand(MO); - break; - case MachineOperand::MO_Register: - MCOp = MCOperand::CreateReg(MO.getReg()); - break; - case MachineOperand::MO_Immediate: - MCOp = MCOperand::CreateImm(MO.getImm()); - break; - case MachineOperand::MO_MachineBasicBlock: - MCOp = MCOperand::CreateMBBLabel(getFunctionNumber(), - MO.getMBB()->getNumber()); - break; - case MachineOperand::MO_GlobalAddress: - MCOp = LowerGlobalAddressOperand(MO); - break; - case MachineOperand::MO_ExternalSymbol: - MCOp = LowerExternalSymbolOperand(MO); - break; - } - - TmpInst.addOperand(MCOp); - } - - switch (TmpInst.getOpcode()) { - case X86::LEA64_32r: - // Handle the 'subreg rewriting' for the lea64_32mem operand. - lower_lea64_32mem(&TmpInst, 1); - break; - } - - // FIXME: Convert TmpInst. - printInstruction(&TmpInst); } void X86ATTAsmPrinter::PrintGlobalVariable(const GlobalVariable* GVar) { diff --git a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h index 56cf255a9a2..9f5e597df76 100644 --- a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h +++ b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h @@ -64,7 +64,9 @@ class VISIBILITY_HIDDEN X86ATTAsmPrinter : public AsmPrinter { /// machine instruction was sufficiently described to print it, otherwise it /// returns false. void printInstruction(const MachineInstr *MI); - + + void printInstructionThroughMCStreamer(const MachineInstr *MI); + // New MCInst printing stuff. void printInstruction(const MCInst *MI); diff --git a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp new file mode 100644 index 00000000000..09e4937b19e --- /dev/null +++ b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp @@ -0,0 +1,283 @@ +//===-- X86MCInstLower.cpp - Convert X86 MachineInstr to an MCInst --------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains code to lower X86 MachineInstrs to their corresponding +// MCInst records. +// +//===----------------------------------------------------------------------===// + + +#include "X86ATTAsmPrinter.h" +#include "X86MCAsmInfo.h" +#include "llvm/MC/MCContext.h" +#include "llvm/MC/MCExpr.h" +#include "llvm/MC/MCInst.h" +#include "llvm/MC/MCStreamer.h" +#include "llvm/Support/FormattedStream.h" +#include "llvm/Support/Mangler.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/ADT/StringExtras.h" // fixme, kill utostr. + +using namespace llvm; + +MCSymbol *X86ATTAsmPrinter::GetPICBaseSymbol() { + // FIXME: the actual label generated doesn't matter here! Just mangle in + // something unique (the function number) with Private prefix. + std::string Name; + + if (Subtarget->isTargetDarwin()) { + Name = "L" + utostr(getFunctionNumber())+"$pb"; + } else { + assert(Subtarget->isTargetELF() && "Don't know how to print PIC label!"); + Name = ".Lllvm$" + utostr(getFunctionNumber())+".$piclabel"; + } + return OutContext.GetOrCreateSymbol(Name); +} + + + +static void lower_lea64_32mem(MCInst *MI, unsigned OpNo) { + // Convert registers in the addr mode according to subreg64. + for (unsigned i = 0; i != 4; ++i) { + if (!MI->getOperand(i).isReg()) continue; + + unsigned Reg = MI->getOperand(i).getReg(); + if (Reg == 0) continue; + + MI->getOperand(i).setReg(getX86SubSuperRegister(Reg, MVT::i64)); + } +} + +/// LowerGlobalAddressOperand - Lower an MO_GlobalAddress operand to an +/// MCOperand. +MCOperand X86ATTAsmPrinter::LowerGlobalAddressOperand(const MachineOperand &MO){ + const GlobalValue *GV = MO.getGlobal(); + + const char *Suffix = ""; + if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) + Suffix = "$stub"; + else if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY || + MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE || + MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY || + MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE) + Suffix = "$non_lazy_ptr"; + + std::string Name = Mang->getMangledName(GV, Suffix, Suffix[0] != '\0'); + if (Subtarget->isTargetCygMing()) + DecorateCygMingName(Name, GV); + + // Handle dllimport linkage. + if (MO.getTargetFlags() == X86II::MO_DLLIMPORT) + Name = "__imp_" + Name; + + if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY || + MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE) + GVStubs[Name] = Mang->getMangledName(GV); + else if (MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY || + MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE) + HiddenGVStubs[Name] = Mang->getMangledName(GV); + else if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) + FnStubs[Name] = Mang->getMangledName(GV); + + + // Handle target operand flags. + // FIXME: This should be common between external symbols, constant pool etc. + MCSymbol *NegatedSymbol = 0; + + switch (MO.getTargetFlags()) { + default: + llvm_unreachable("Unknown target flag on GV operand"); + case X86II::MO_NO_FLAG: // No flag. + break; + case X86II::MO_DARWIN_NONLAZY: + case X86II::MO_DARWIN_HIDDEN_NONLAZY: + case X86II::MO_DLLIMPORT: + case X86II::MO_DARWIN_STUB: + // These affect the name of the symbol, not any suffix. + break; + case X86II::MO_GOT_ABSOLUTE_ADDRESS: + assert(0 && "Reloc mode unimp!"); + //O << " + [.-"; + //PrintPICBaseSymbol(); + //O << ']'; + break; + case X86II::MO_PIC_BASE_OFFSET: + case X86II::MO_DARWIN_NONLAZY_PIC_BASE: + case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: + // Subtract the pic base. + NegatedSymbol = GetPICBaseSymbol(); + break; + + // FIXME: These probably should be a modifier on the symbol or something?? + case X86II::MO_TLSGD: Name += "@TLSGD"; break; + case X86II::MO_GOTTPOFF: Name += "@GOTTPOFF"; break; + case X86II::MO_INDNTPOFF: Name += "@INDNTPOFF"; break; + case X86II::MO_TPOFF: Name += "@TPOFF"; break; + case X86II::MO_NTPOFF: Name += "@NTPOFF"; break; + case X86II::MO_GOTPCREL: Name += "@GOTPCREL"; break; + case X86II::MO_GOT: Name += "@GOT"; break; + case X86II::MO_GOTOFF: Name += "@GOTOFF"; break; + case X86II::MO_PLT: Name += "@PLT"; break; + } + + // Create a symbol for the name. + MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name); + // FIXME: We would like an efficient form for this, so we don't have to do a + // lot of extra uniquing. + const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, OutContext); + if (NegatedSymbol) + Expr = MCBinaryExpr::CreateSub(Expr, MCSymbolRefExpr::Create(NegatedSymbol, + OutContext), + OutContext); + if (MO.getOffset()) + Expr = MCBinaryExpr::CreateAdd(Expr, MCConstantExpr::Create(MO.getOffset(), + OutContext), + OutContext); + return MCOperand::CreateExpr(Expr); +} + +MCOperand X86ATTAsmPrinter:: +LowerExternalSymbolOperand(const MachineOperand &MO) { + std::string Name = Mang->makeNameProper(MO.getSymbolName()); + if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) { + FnStubs[Name+"$stub"] = Name; + Name += "$stub"; + } + + MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name); + // FIXME: We would like an efficient form for this, so we don't have to do a + // lot of extra uniquing. + const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, OutContext); + if (MO.getOffset()) + Expr = MCBinaryExpr::CreateAdd(Expr, + MCConstantExpr::Create(MO.getOffset(), + OutContext), + OutContext); + return MCOperand::CreateExpr(Expr); +} + +MCOperand X86ATTAsmPrinter::LowerJumpTableOperand(const MachineOperand &MO) { + SmallString<256> Name; + raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "JTI" + << getFunctionNumber() << '_' << MO.getIndex(); + + MCSymbol *NegatedSymbol = 0; + switch (MO.getTargetFlags()) { + default: + llvm_unreachable("Unknown target flag on GV operand"); + case X86II::MO_PIC_BASE_OFFSET: + case X86II::MO_DARWIN_NONLAZY_PIC_BASE: + case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: + // Subtract the pic base. + NegatedSymbol = GetPICBaseSymbol(); + break; + } + + // Create a symbol for the name. + MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name.str()); + // FIXME: We would like an efficient form for this, so we don't have to do a + // lot of extra uniquing. + const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, OutContext); + if (NegatedSymbol) + Expr = MCBinaryExpr::CreateSub(Expr, MCSymbolRefExpr::Create(NegatedSymbol, + OutContext), + OutContext); + return MCOperand::CreateExpr(Expr); +} + + +void X86ATTAsmPrinter:: +printInstructionThroughMCStreamer(const MachineInstr *MI) { + + MCInst TmpInst; + + switch (MI->getOpcode()) { + case TargetInstrInfo::DBG_LABEL: + case TargetInstrInfo::EH_LABEL: + case TargetInstrInfo::GC_LABEL: + printLabel(MI); + return; + case TargetInstrInfo::INLINEASM: + O << '\t'; + printInlineAsm(MI); + return; + case TargetInstrInfo::IMPLICIT_DEF: + printImplicitDef(MI); + return; + case X86::MOVPC32r: { + // This is a pseudo op for a two instruction sequence with a label, which + // looks like: + // call "L1$pb" + // "L1$pb": + // popl %esi + + // Emit the call. + MCSymbol *PICBase = GetPICBaseSymbol(); + TmpInst.setOpcode(X86::CALLpcrel32); + // FIXME: We would like an efficient form for this, so we don't have to do a + // lot of extra uniquing. + TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr::Create(PICBase, + OutContext))); + printInstruction(&TmpInst); + + // Emit the label. + OutStreamer.EmitLabel(PICBase); + + // popl $reg + TmpInst.setOpcode(X86::POP32r); + TmpInst.getOperand(0) = MCOperand::CreateReg(MI->getOperand(0).getReg()); + printInstruction(&TmpInst); + return; + } + } + + TmpInst.setOpcode(MI->getOpcode()); + + for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { + const MachineOperand &MO = MI->getOperand(i); + + MCOperand MCOp; + switch (MO.getType()) { + default: + O.flush(); + errs() << "Cannot lower operand #" << i << " of :" << *MI; + llvm_unreachable("Unimp"); + case MachineOperand::MO_JumpTableIndex: + MCOp = LowerJumpTableOperand(MO); + break; + case MachineOperand::MO_Register: + MCOp = MCOperand::CreateReg(MO.getReg()); + break; + case MachineOperand::MO_Immediate: + MCOp = MCOperand::CreateImm(MO.getImm()); + break; + case MachineOperand::MO_MachineBasicBlock: + MCOp = MCOperand::CreateMBBLabel(getFunctionNumber(), + MO.getMBB()->getNumber()); + break; + case MachineOperand::MO_GlobalAddress: + MCOp = LowerGlobalAddressOperand(MO); + break; + case MachineOperand::MO_ExternalSymbol: + MCOp = LowerExternalSymbolOperand(MO); + break; + } + + TmpInst.addOperand(MCOp); + } + + switch (TmpInst.getOpcode()) { + case X86::LEA64_32r: + // Handle the 'subreg rewriting' for the lea64_32mem operand. + lower_lea64_32mem(&TmpInst, 1); + break; + } + + printInstruction(&TmpInst); +} -- 2.34.1