X86MCInstLower.cpp revision 6e8154354fd879d64c2406131370d61a6b123103
1522e9a0435ebba7b25802992031d0657654c281cChris Lattner//===-- X86MCInstLower.cpp - Convert X86 MachineInstr to an MCInst --------===// 2522e9a0435ebba7b25802992031d0657654c281cChris Lattner// 3522e9a0435ebba7b25802992031d0657654c281cChris Lattner// The LLVM Compiler Infrastructure 4522e9a0435ebba7b25802992031d0657654c281cChris Lattner// 5522e9a0435ebba7b25802992031d0657654c281cChris Lattner// This file is distributed under the University of Illinois Open Source 6522e9a0435ebba7b25802992031d0657654c281cChris Lattner// License. See LICENSE.TXT for details. 7522e9a0435ebba7b25802992031d0657654c281cChris Lattner// 8522e9a0435ebba7b25802992031d0657654c281cChris Lattner//===----------------------------------------------------------------------===// 9522e9a0435ebba7b25802992031d0657654c281cChris Lattner// 10522e9a0435ebba7b25802992031d0657654c281cChris Lattner// This file contains code to lower X86 MachineInstrs to their corresponding 11522e9a0435ebba7b25802992031d0657654c281cChris Lattner// MCInst records. 12522e9a0435ebba7b25802992031d0657654c281cChris Lattner// 13522e9a0435ebba7b25802992031d0657654c281cChris Lattner//===----------------------------------------------------------------------===// 14522e9a0435ebba7b25802992031d0657654c281cChris Lattner 158fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner#include "X86MCInstLower.h" 160dc32ea0ef14c7e7f88edb12763a7828052a7fbdChris Lattner#include "X86AsmPrinter.h" 1767c6b6ee71826b2c48b4da490340e5c3e2a94cd2Chris Lattner#include "X86COFFMachineModuleInfo.h" 18017ec35e28d9960e5398102eceffe9a652703119Chris Lattner#include "X86MCAsmInfo.h" 19dc62ea0f1c6eb0673f39c543f1936ce125efdb30Chris Lattner#include "llvm/CodeGen/MachineModuleInfoImpls.h" 20522e9a0435ebba7b25802992031d0657654c281cChris Lattner#include "llvm/MC/MCContext.h" 21522e9a0435ebba7b25802992031d0657654c281cChris Lattner#include "llvm/MC/MCExpr.h" 22522e9a0435ebba7b25802992031d0657654c281cChris Lattner#include "llvm/MC/MCInst.h" 23522e9a0435ebba7b25802992031d0657654c281cChris Lattner#include "llvm/MC/MCStreamer.h" 24c9747c05d1fc01678fb86b3bc4674656228269bcChris Lattner#include "llvm/MC/MCSymbol.h" 2545111d160cf0910030eeb6a949c69273502e5ad5Chris Lattner#include "llvm/Target/Mangler.h" 26522e9a0435ebba7b25802992031d0657654c281cChris Lattner#include "llvm/Support/FormattedStream.h" 27522e9a0435ebba7b25802992031d0657654c281cChris Lattner#include "llvm/ADT/SmallString.h" 28c4b94e02af43821dfb0cd35ff4f5e5f118f426dcDale Johannesen#include "llvm/Type.h" 29522e9a0435ebba7b25802992031d0657654c281cChris Lattnerusing namespace llvm; 30522e9a0435ebba7b25802992031d0657654c281cChris Lattner 316e8154354fd879d64c2406131370d61a6b123103Chris LattnerX86MCInstLower::X86MCInstLower(Mangler *mang, const MachineFunction &mf, 326e8154354fd879d64c2406131370d61a6b123103Chris Lattner X86AsmPrinter *asmprinter) 336e8154354fd879d64c2406131370d61a6b123103Chris Lattner: Ctx(mf.getContext()), Mang(mang), MF(mf), TM(mf.getTarget()), 346e8154354fd879d64c2406131370d61a6b123103Chris Lattner MAI(*TM.getMCAsmInfo()), AsmPrinter(asmprinter) {} 358fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner 36dc62ea0f1c6eb0673f39c543f1936ce125efdb30Chris LattnerMachineModuleInfoMachO &X86MCInstLower::getMachOMMI() const { 370c13cf36adf5dc7560523c5cde7dfbbe32bdbe9eChris Lattner return MF.getMMI().getObjFileInfo<MachineModuleInfoMachO>(); 38dc62ea0f1c6eb0673f39c543f1936ce125efdb30Chris Lattner} 39dc62ea0f1c6eb0673f39c543f1936ce125efdb30Chris Lattner 408fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner 418fea32f9ff5cec2165661a3da986abe29c9bddb1Chris LattnerMCSymbol *X86MCInstLower::GetPICBaseSymbol() const { 42c0115b5ca16af761199f17bf496403a5c7b710ecChris Lattner return static_cast<const X86TargetLowering*>(TM.getTargetLowering())-> 430c13cf36adf5dc7560523c5cde7dfbbe32bdbe9eChris Lattner getPICBaseSymbol(&MF, Ctx); 44522e9a0435ebba7b25802992031d0657654c281cChris Lattner} 45522e9a0435ebba7b25802992031d0657654c281cChris Lattner 463484110c67d88f5ead0f0795b880056174f66811Chris Lattner/// GetSymbolFromOperand - Lower an MO_GlobalAddress or MO_ExternalSymbol 473484110c67d88f5ead0f0795b880056174f66811Chris Lattner/// operand to an MCSymbol. 488fea32f9ff5cec2165661a3da986abe29c9bddb1Chris LattnerMCSymbol *X86MCInstLower:: 493484110c67d88f5ead0f0795b880056174f66811Chris LattnerGetSymbolFromOperand(const MachineOperand &MO) const { 503484110c67d88f5ead0f0795b880056174f66811Chris Lattner assert((MO.isGlobal() || MO.isSymbol()) && "Isn't a symbol reference"); 513484110c67d88f5ead0f0795b880056174f66811Chris Lattner 52a49ea86ba234c6b738dda33ef608781a86bde1b9Chris Lattner SmallString<128> Name; 53522e9a0435ebba7b25802992031d0657654c281cChris Lattner 54c9747c05d1fc01678fb86b3bc4674656228269bcChris Lattner if (!MO.isGlobal()) { 55c9747c05d1fc01678fb86b3bc4674656228269bcChris Lattner assert(MO.isSymbol()); 56c0115b5ca16af761199f17bf496403a5c7b710ecChris Lattner Name += MAI.getGlobalPrefix(); 57c9747c05d1fc01678fb86b3bc4674656228269bcChris Lattner Name += MO.getSymbolName(); 58c9747c05d1fc01678fb86b3bc4674656228269bcChris Lattner } else { 59c9747c05d1fc01678fb86b3bc4674656228269bcChris Lattner const GlobalValue *GV = MO.getGlobal(); 603484110c67d88f5ead0f0795b880056174f66811Chris Lattner bool isImplicitlyPrivate = false; 613484110c67d88f5ead0f0795b880056174f66811Chris Lattner if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB || 623484110c67d88f5ead0f0795b880056174f66811Chris Lattner MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY || 633484110c67d88f5ead0f0795b880056174f66811Chris Lattner MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE || 643484110c67d88f5ead0f0795b880056174f66811Chris Lattner MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE) 653484110c67d88f5ead0f0795b880056174f66811Chris Lattner isImplicitlyPrivate = true; 663484110c67d88f5ead0f0795b880056174f66811Chris Lattner 673484110c67d88f5ead0f0795b880056174f66811Chris Lattner Mang->getNameWithPrefix(Name, GV, isImplicitlyPrivate); 683484110c67d88f5ead0f0795b880056174f66811Chris Lattner } 693484110c67d88f5ead0f0795b880056174f66811Chris Lattner 703484110c67d88f5ead0f0795b880056174f66811Chris Lattner // If the target flags on the operand changes the name of the symbol, do that 713484110c67d88f5ead0f0795b880056174f66811Chris Lattner // before we return the symbol. 7247548d33654a9b747adabfc20a88babeeede2912Chris Lattner switch (MO.getTargetFlags()) { 733484110c67d88f5ead0f0795b880056174f66811Chris Lattner default: break; 74a49ea86ba234c6b738dda33ef608781a86bde1b9Chris Lattner case X86II::MO_DLLIMPORT: { 7547548d33654a9b747adabfc20a88babeeede2912Chris Lattner // Handle dllimport linkage. 76a49ea86ba234c6b738dda33ef608781a86bde1b9Chris Lattner const char *Prefix = "__imp_"; 77a49ea86ba234c6b738dda33ef608781a86bde1b9Chris Lattner Name.insert(Name.begin(), Prefix, Prefix+strlen(Prefix)); 7847548d33654a9b747adabfc20a88babeeede2912Chris Lattner break; 79a49ea86ba234c6b738dda33ef608781a86bde1b9Chris Lattner } 8047548d33654a9b747adabfc20a88babeeede2912Chris Lattner case X86II::MO_DARWIN_NONLAZY: 8146091d70f5d4db5125ab0b48f018cf15bf2396b0Chris Lattner case X86II::MO_DARWIN_NONLAZY_PIC_BASE: { 82a49ea86ba234c6b738dda33ef608781a86bde1b9Chris Lattner Name += "$non_lazy_ptr"; 839b97a73dedf736e14b04a3d1a153f10d25b2507bChris Lattner MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str()); 84dc62ea0f1c6eb0673f39c543f1936ce125efdb30Chris Lattner 85cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling MachineModuleInfoImpl::StubValueTy &StubSym = 86cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling getMachOMMI().getGVStubEntry(Sym); 87cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling if (StubSym.getPointer() == 0) { 883484110c67d88f5ead0f0795b880056174f66811Chris Lattner assert(MO.isGlobal() && "Extern symbol not handled yet"); 89cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling StubSym = 90cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling MachineModuleInfoImpl:: 917648bd428b42170b27b53a4faff33dc029579dccChris Lattner StubValueTy(Mang->getSymbol(MO.getGlobal()), 92cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling !MO.getGlobal()->hasInternalLinkage()); 933484110c67d88f5ead0f0795b880056174f66811Chris Lattner } 9446091d70f5d4db5125ab0b48f018cf15bf2396b0Chris Lattner return Sym; 9546091d70f5d4db5125ab0b48f018cf15bf2396b0Chris Lattner } 969e6ffba26b0cdc5eb9267284536459b956090472Chris Lattner case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: { 97a49ea86ba234c6b738dda33ef608781a86bde1b9Chris Lattner Name += "$non_lazy_ptr"; 989b97a73dedf736e14b04a3d1a153f10d25b2507bChris Lattner MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str()); 99cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling MachineModuleInfoImpl::StubValueTy &StubSym = 100cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling getMachOMMI().getHiddenGVStubEntry(Sym); 101cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling if (StubSym.getPointer() == 0) { 1023484110c67d88f5ead0f0795b880056174f66811Chris Lattner assert(MO.isGlobal() && "Extern symbol not handled yet"); 103cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling StubSym = 104cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling MachineModuleInfoImpl:: 1057648bd428b42170b27b53a4faff33dc029579dccChris Lattner StubValueTy(Mang->getSymbol(MO.getGlobal()), 106cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling !MO.getGlobal()->hasInternalLinkage()); 1073484110c67d88f5ead0f0795b880056174f66811Chris Lattner } 1086b35bf187c5549c31cfd52756ad3b235248e5749Chris Lattner return Sym; 1099e6ffba26b0cdc5eb9267284536459b956090472Chris Lattner } 1102a3c20bf269c3adef88e16902c041819eea04183Chris Lattner case X86II::MO_DARWIN_STUB: { 111a49ea86ba234c6b738dda33ef608781a86bde1b9Chris Lattner Name += "$stub"; 1129b97a73dedf736e14b04a3d1a153f10d25b2507bChris Lattner MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str()); 113cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling MachineModuleInfoImpl::StubValueTy &StubSym = 114cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling getMachOMMI().getFnStubEntry(Sym); 115cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling if (StubSym.getPointer()) 1163484110c67d88f5ead0f0795b880056174f66811Chris Lattner return Sym; 1173484110c67d88f5ead0f0795b880056174f66811Chris Lattner 1183484110c67d88f5ead0f0795b880056174f66811Chris Lattner if (MO.isGlobal()) { 119cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling StubSym = 120cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling MachineModuleInfoImpl:: 1217648bd428b42170b27b53a4faff33dc029579dccChris Lattner StubValueTy(Mang->getSymbol(MO.getGlobal()), 122cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling !MO.getGlobal()->hasInternalLinkage()); 1233484110c67d88f5ead0f0795b880056174f66811Chris Lattner } else { 12446091d70f5d4db5125ab0b48f018cf15bf2396b0Chris Lattner Name.erase(Name.end()-5, Name.end()); 125cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling StubSym = 126cebae36f57456fe6b0e13726acd1e0250654f02dBill Wendling MachineModuleInfoImpl:: 1279b97a73dedf736e14b04a3d1a153f10d25b2507bChris Lattner StubValueTy(Ctx.GetOrCreateSymbol(Name.str()), false); 12846091d70f5d4db5125ab0b48f018cf15bf2396b0Chris Lattner } 1292a3c20bf269c3adef88e16902c041819eea04183Chris Lattner return Sym; 1302a3c20bf269c3adef88e16902c041819eea04183Chris Lattner } 131118c27c6d4211401a97183d642f823460e86a854Chris Lattner } 1323484110c67d88f5ead0f0795b880056174f66811Chris Lattner 1338fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner return Ctx.GetOrCreateSymbol(Name.str()); 134e8c2780521d463013accc79afe014816d02444ecChris Lattner} 135e8c2780521d463013accc79afe014816d02444ecChris Lattner 1368fea32f9ff5cec2165661a3da986abe29c9bddb1Chris LattnerMCOperand X86MCInstLower::LowerSymbolOperand(const MachineOperand &MO, 1378fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner MCSymbol *Sym) const { 138975d7e039260a9888050dfb6da865348d67fbb27Chris Lattner // FIXME: We would like an efficient form for this, so we don't have to do a 139975d7e039260a9888050dfb6da865348d67fbb27Chris Lattner // lot of extra uniquing. 1408fb2e233a0f4fdb4615fddb0c1ebbb0944068925Chris Lattner const MCExpr *Expr = 0; 1414e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar MCSymbolRefExpr::VariantKind RefKind = MCSymbolRefExpr::VK_None; 142975d7e039260a9888050dfb6da865348d67fbb27Chris Lattner 143e8c2780521d463013accc79afe014816d02444ecChris Lattner switch (MO.getTargetFlags()) { 14447548d33654a9b747adabfc20a88babeeede2912Chris Lattner default: llvm_unreachable("Unknown target flag on GV operand"); 14547548d33654a9b747adabfc20a88babeeede2912Chris Lattner case X86II::MO_NO_FLAG: // No flag. 14647548d33654a9b747adabfc20a88babeeede2912Chris Lattner // These affect the name of the symbol, not any suffix. 14747548d33654a9b747adabfc20a88babeeede2912Chris Lattner case X86II::MO_DARWIN_NONLAZY: 14847548d33654a9b747adabfc20a88babeeede2912Chris Lattner case X86II::MO_DLLIMPORT: 14947548d33654a9b747adabfc20a88babeeede2912Chris Lattner case X86II::MO_DARWIN_STUB: 15047548d33654a9b747adabfc20a88babeeede2912Chris Lattner break; 1518fb2e233a0f4fdb4615fddb0c1ebbb0944068925Chris Lattner 15230ef0e5658b0b8b04437f73f74162d5d72923f29Eric Christopher case X86II::MO_TLVP: RefKind = MCSymbolRefExpr::VK_TLVP; break; 15330ef0e5658b0b8b04437f73f74162d5d72923f29Eric Christopher case X86II::MO_TLVP_PIC_BASE: 15441af1cdd1cb6987a5ea4c9998d652475fd60d1cdChris Lattner Expr = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_TLVP, Ctx); 15541af1cdd1cb6987a5ea4c9998d652475fd60d1cdChris Lattner // Subtract the pic base. 15641af1cdd1cb6987a5ea4c9998d652475fd60d1cdChris Lattner Expr = MCBinaryExpr::CreateSub(Expr, 15741af1cdd1cb6987a5ea4c9998d652475fd60d1cdChris Lattner MCSymbolRefExpr::Create(GetPICBaseSymbol(), 15841af1cdd1cb6987a5ea4c9998d652475fd60d1cdChris Lattner Ctx), 15941af1cdd1cb6987a5ea4c9998d652475fd60d1cdChris Lattner Ctx); 16041af1cdd1cb6987a5ea4c9998d652475fd60d1cdChris Lattner break; 1614e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_TLSGD: RefKind = MCSymbolRefExpr::VK_TLSGD; break; 1624e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_GOTTPOFF: RefKind = MCSymbolRefExpr::VK_GOTTPOFF; break; 1634e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_INDNTPOFF: RefKind = MCSymbolRefExpr::VK_INDNTPOFF; break; 1644e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_TPOFF: RefKind = MCSymbolRefExpr::VK_TPOFF; break; 1654e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_NTPOFF: RefKind = MCSymbolRefExpr::VK_NTPOFF; break; 1664e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_GOTPCREL: RefKind = MCSymbolRefExpr::VK_GOTPCREL; break; 1674e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_GOT: RefKind = MCSymbolRefExpr::VK_GOT; break; 1684e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_GOTOFF: RefKind = MCSymbolRefExpr::VK_GOTOFF; break; 1694e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar case X86II::MO_PLT: RefKind = MCSymbolRefExpr::VK_PLT; break; 17047548d33654a9b747adabfc20a88babeeede2912Chris Lattner case X86II::MO_PIC_BASE_OFFSET: 17147548d33654a9b747adabfc20a88babeeede2912Chris Lattner case X86II::MO_DARWIN_NONLAZY_PIC_BASE: 17247548d33654a9b747adabfc20a88babeeede2912Chris Lattner case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: 1738fb2e233a0f4fdb4615fddb0c1ebbb0944068925Chris Lattner Expr = MCSymbolRefExpr::Create(Sym, Ctx); 17447548d33654a9b747adabfc20a88babeeede2912Chris Lattner // Subtract the pic base. 175975d7e039260a9888050dfb6da865348d67fbb27Chris Lattner Expr = MCBinaryExpr::CreateSub(Expr, 176e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner MCSymbolRefExpr::Create(GetPICBaseSymbol(), Ctx), 1778fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner Ctx); 178c0115b5ca16af761199f17bf496403a5c7b710ecChris Lattner if (MO.isJTI() && MAI.hasSetDirective()) { 17982865a10f86453a6069b9980ca76129d132f806eEvan Cheng // If .set directive is supported, use it to reduce the number of 18082865a10f86453a6069b9980ca76129d132f806eEvan Cheng // relocations the assembler will generate for differences between 18182865a10f86453a6069b9980ca76129d132f806eEvan Cheng // local labels. This is only safe when the symbols are in the same 18282865a10f86453a6069b9980ca76129d132f806eEvan Cheng // section so we are restricting it to jumptable references. 18382865a10f86453a6069b9980ca76129d132f806eEvan Cheng MCSymbol *Label = Ctx.CreateTempSymbol(); 1846e8154354fd879d64c2406131370d61a6b123103Chris Lattner AsmPrinter->OutStreamer.EmitAssignment(Label, Expr); 18582865a10f86453a6069b9980ca76129d132f806eEvan Cheng Expr = MCSymbolRefExpr::Create(Label, Ctx); 18682865a10f86453a6069b9980ca76129d132f806eEvan Cheng } 18747548d33654a9b747adabfc20a88babeeede2912Chris Lattner break; 188975d7e039260a9888050dfb6da865348d67fbb27Chris Lattner } 189e8c2780521d463013accc79afe014816d02444ecChris Lattner 1904e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar if (Expr == 0) 1914e815f8a8cae6c846cdca52420046cab902865deDaniel Dunbar Expr = MCSymbolRefExpr::Create(Sym, RefKind, Ctx); 1928fb2e233a0f4fdb4615fddb0c1ebbb0944068925Chris Lattner 19347ad2d6e9702f572de4df1c0b2b66ef40fcda48cChris Lattner if (!MO.isJTI() && MO.getOffset()) 1948fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner Expr = MCBinaryExpr::CreateAdd(Expr, 1958fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner MCConstantExpr::Create(MO.getOffset(), Ctx), 1968fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner Ctx); 197118c27c6d4211401a97183d642f823460e86a854Chris Lattner return MCOperand::CreateExpr(Expr); 198118c27c6d4211401a97183d642f823460e86a854Chris Lattner} 199118c27c6d4211401a97183d642f823460e86a854Chris Lattner 200cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner 201cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner 202cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattnerstatic void lower_subreg32(MCInst *MI, unsigned OpNo) { 203cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner // Convert registers in the addr mode according to subreg32. 204cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner unsigned Reg = MI->getOperand(OpNo).getReg(); 205cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner if (Reg != 0) 206cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner MI->getOperand(OpNo).setReg(getX86SubSuperRegister(Reg, MVT::i32)); 207cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner} 208cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner 209cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattnerstatic void lower_lea64_32mem(MCInst *MI, unsigned OpNo) { 210cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner // Convert registers in the addr mode according to subreg64. 211cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner for (unsigned i = 0; i != 4; ++i) { 212cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner if (!MI->getOperand(OpNo+i).isReg()) continue; 213cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner 214cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner unsigned Reg = MI->getOperand(OpNo+i).getReg(); 215cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner if (Reg == 0) continue; 216cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner 217cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner MI->getOperand(OpNo+i).setReg(getX86SubSuperRegister(Reg, MVT::i64)); 218cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner } 219cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner} 220cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner 221ff928976f892a63f814a2f5d052213736c242748Chris Lattner/// LowerSubReg32_Op0 - Things like MOVZX16rr8 -> MOVZX32rr8. 222ff928976f892a63f814a2f5d052213736c242748Chris Lattnerstatic void LowerSubReg32_Op0(MCInst &OutMI, unsigned NewOpc) { 223c74e333ecc446c485cecce8bc54a1c9594d444daChris Lattner OutMI.setOpcode(NewOpc); 224c74e333ecc446c485cecce8bc54a1c9594d444daChris Lattner lower_subreg32(&OutMI, 0); 225c74e333ecc446c485cecce8bc54a1c9594d444daChris Lattner} 226ff928976f892a63f814a2f5d052213736c242748Chris Lattner/// LowerUnaryToTwoAddr - R = setb -> R = sbb R, R 227ff928976f892a63f814a2f5d052213736c242748Chris Lattnerstatic void LowerUnaryToTwoAddr(MCInst &OutMI, unsigned NewOpc) { 228c74e333ecc446c485cecce8bc54a1c9594d444daChris Lattner OutMI.setOpcode(NewOpc); 229c74e333ecc446c485cecce8bc54a1c9594d444daChris Lattner OutMI.addOperand(OutMI.getOperand(0)); 230c74e333ecc446c485cecce8bc54a1c9594d444daChris Lattner OutMI.addOperand(OutMI.getOperand(0)); 231c74e333ecc446c485cecce8bc54a1c9594d444daChris Lattner} 232cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner 2333f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar/// \brief Simplify FOO $imm, %{al,ax,eax,rax} to FOO $imm, for instruction with 2343f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar/// a short fixed-register form. 2353f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbarstatic void SimplifyShortImmForm(MCInst &Inst, unsigned Opcode) { 2363f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar unsigned ImmOp = Inst.getNumOperands() - 1; 2373f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar assert(Inst.getOperand(0).isReg() && Inst.getOperand(ImmOp).isImm() && 2383f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar ((Inst.getNumOperands() == 3 && Inst.getOperand(1).isReg() && 2393f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar Inst.getOperand(0).getReg() == Inst.getOperand(1).getReg()) || 2403f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar Inst.getNumOperands() == 2) && "Unexpected instruction!"); 2413f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar 2423f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar // Check whether the destination register can be fixed. 2433f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar unsigned Reg = Inst.getOperand(0).getReg(); 2443f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar if (Reg != X86::AL && Reg != X86::AX && Reg != X86::EAX && Reg != X86::RAX) 2453f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar return; 2463f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar 2473f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar // If so, rewrite the instruction. 248597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar MCOperand Saved = Inst.getOperand(ImmOp); 249597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst = MCInst(); 250597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.setOpcode(Opcode); 251597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.addOperand(Saved); 252597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar} 253597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar 254597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar/// \brief Simplify things like MOV32rm to MOV32o32a. 255597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbarstatic void SimplifyShortMoveForm(MCInst &Inst, unsigned Opcode) { 256597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar bool IsStore = Inst.getOperand(0).isReg() && Inst.getOperand(1).isReg(); 257597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar unsigned AddrBase = IsStore; 258597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar unsigned RegOp = IsStore ? 0 : 5; 259597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar unsigned AddrOp = AddrBase + 3; 260597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar assert(Inst.getNumOperands() == 6 && Inst.getOperand(RegOp).isReg() && 261597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.getOperand(AddrBase + 0).isReg() && // base 262597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.getOperand(AddrBase + 1).isImm() && // scale 263597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.getOperand(AddrBase + 2).isReg() && // index register 264597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar (Inst.getOperand(AddrOp).isExpr() || // address 265597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.getOperand(AddrOp).isImm())&& 266597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.getOperand(AddrBase + 4).isReg() && // segment 267597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar "Unexpected instruction!"); 268597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar 269597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar // Check whether the destination register can be fixed. 270597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar unsigned Reg = Inst.getOperand(RegOp).getReg(); 271597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar if (Reg != X86::AL && Reg != X86::AX && Reg != X86::EAX && Reg != X86::RAX) 272597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar return; 273597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar 274597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar // Check whether this is an absolute address. 275e98ad835435b82347eac3708e561928a35c62865Eric Christopher // FIXME: We know TLVP symbol refs aren't, but there should be a better way 276e98ad835435b82347eac3708e561928a35c62865Eric Christopher // to do this here. 277e98ad835435b82347eac3708e561928a35c62865Eric Christopher bool Absolute = true; 278e98ad835435b82347eac3708e561928a35c62865Eric Christopher if (Inst.getOperand(AddrOp).isExpr()) { 279e98ad835435b82347eac3708e561928a35c62865Eric Christopher const MCExpr *MCE = Inst.getOperand(AddrOp).getExpr(); 280e98ad835435b82347eac3708e561928a35c62865Eric Christopher if (const MCSymbolRefExpr *SRE = dyn_cast<MCSymbolRefExpr>(MCE)) 281e98ad835435b82347eac3708e561928a35c62865Eric Christopher if (SRE->getKind() == MCSymbolRefExpr::VK_TLVP) 282e98ad835435b82347eac3708e561928a35c62865Eric Christopher Absolute = false; 283e98ad835435b82347eac3708e561928a35c62865Eric Christopher } 284e98ad835435b82347eac3708e561928a35c62865Eric Christopher 285e98ad835435b82347eac3708e561928a35c62865Eric Christopher if (Absolute && 286e98ad835435b82347eac3708e561928a35c62865Eric Christopher (Inst.getOperand(AddrBase + 0).getReg() != 0 || 287e98ad835435b82347eac3708e561928a35c62865Eric Christopher Inst.getOperand(AddrBase + 2).getReg() != 0 || 288e98ad835435b82347eac3708e561928a35c62865Eric Christopher Inst.getOperand(AddrBase + 4).getReg() != 0 || 289e98ad835435b82347eac3708e561928a35c62865Eric Christopher Inst.getOperand(AddrBase + 1).getImm() != 1)) 290597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar return; 291597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar 292597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar // If so, rewrite the instruction. 293597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar MCOperand Saved = Inst.getOperand(AddrOp); 294597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst = MCInst(); 295597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.setOpcode(Opcode); 296597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar Inst.addOperand(Saved); 2973f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar} 2988fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner 2998fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattnervoid X86MCInstLower::Lower(const MachineInstr *MI, MCInst &OutMI) const { 3008fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner OutMI.setOpcode(MI->getOpcode()); 301522e9a0435ebba7b25802992031d0657654c281cChris Lattner 302522e9a0435ebba7b25802992031d0657654c281cChris Lattner for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 303522e9a0435ebba7b25802992031d0657654c281cChris Lattner const MachineOperand &MO = MI->getOperand(i); 304522e9a0435ebba7b25802992031d0657654c281cChris Lattner 305522e9a0435ebba7b25802992031d0657654c281cChris Lattner MCOperand MCOp; 306522e9a0435ebba7b25802992031d0657654c281cChris Lattner switch (MO.getType()) { 307522e9a0435ebba7b25802992031d0657654c281cChris Lattner default: 3088fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner MI->dump(); 3098fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner llvm_unreachable("unknown operand type"); 310522e9a0435ebba7b25802992031d0657654c281cChris Lattner case MachineOperand::MO_Register: 311af0df67d2bdae61d4360c79ff25deeb34d33f73aChris Lattner // Ignore all implicit register operands. 312af0df67d2bdae61d4360c79ff25deeb34d33f73aChris Lattner if (MO.isImplicit()) continue; 313522e9a0435ebba7b25802992031d0657654c281cChris Lattner MCOp = MCOperand::CreateReg(MO.getReg()); 314522e9a0435ebba7b25802992031d0657654c281cChris Lattner break; 315522e9a0435ebba7b25802992031d0657654c281cChris Lattner case MachineOperand::MO_Immediate: 316522e9a0435ebba7b25802992031d0657654c281cChris Lattner MCOp = MCOperand::CreateImm(MO.getImm()); 317522e9a0435ebba7b25802992031d0657654c281cChris Lattner break; 318522e9a0435ebba7b25802992031d0657654c281cChris Lattner case MachineOperand::MO_MachineBasicBlock: 319d8d20506371a11f38bc39dfc5201a61acaa4e0beChris Lattner MCOp = MCOperand::CreateExpr(MCSymbolRefExpr::Create( 3201b2eb0e8a6aaf034675b17be6d853cb1c666200fChris Lattner MO.getMBB()->getSymbol(), Ctx)); 321522e9a0435ebba7b25802992031d0657654c281cChris Lattner break; 322522e9a0435ebba7b25802992031d0657654c281cChris Lattner case MachineOperand::MO_GlobalAddress: 3233484110c67d88f5ead0f0795b880056174f66811Chris Lattner MCOp = LowerSymbolOperand(MO, GetSymbolFromOperand(MO)); 324522e9a0435ebba7b25802992031d0657654c281cChris Lattner break; 325522e9a0435ebba7b25802992031d0657654c281cChris Lattner case MachineOperand::MO_ExternalSymbol: 3263484110c67d88f5ead0f0795b880056174f66811Chris Lattner MCOp = LowerSymbolOperand(MO, GetSymbolFromOperand(MO)); 327522e9a0435ebba7b25802992031d0657654c281cChris Lattner break; 328118c27c6d4211401a97183d642f823460e86a854Chris Lattner case MachineOperand::MO_JumpTableIndex: 3296e8154354fd879d64c2406131370d61a6b123103Chris Lattner MCOp = LowerSymbolOperand(MO, AsmPrinter->GetJTISymbol(MO.getIndex())); 330118c27c6d4211401a97183d642f823460e86a854Chris Lattner break; 331118c27c6d4211401a97183d642f823460e86a854Chris Lattner case MachineOperand::MO_ConstantPoolIndex: 3326e8154354fd879d64c2406131370d61a6b123103Chris Lattner MCOp = LowerSymbolOperand(MO, AsmPrinter->GetCPISymbol(MO.getIndex())); 333118c27c6d4211401a97183d642f823460e86a854Chris Lattner break; 334f705adbe5ecd156de3f5a3017ddf4017e3890777Dan Gohman case MachineOperand::MO_BlockAddress: 3358fb2e233a0f4fdb4615fddb0c1ebbb0944068925Chris Lattner MCOp = LowerSymbolOperand(MO, 3366e8154354fd879d64c2406131370d61a6b123103Chris Lattner AsmPrinter->GetBlockAddressSymbol(MO.getBlockAddress())); 337f705adbe5ecd156de3f5a3017ddf4017e3890777Dan Gohman break; 338522e9a0435ebba7b25802992031d0657654c281cChris Lattner } 339522e9a0435ebba7b25802992031d0657654c281cChris Lattner 3408fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner OutMI.addOperand(MCOp); 341522e9a0435ebba7b25802992031d0657654c281cChris Lattner } 342522e9a0435ebba7b25802992031d0657654c281cChris Lattner 343cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner // Handle a few special cases to eliminate operand modifiers. 3448fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner switch (OutMI.getOpcode()) { 345cf1ed75f7ffae47c50f9030d56397ab6ee324253Chris Lattner case X86::LEA64_32r: // Handle 'subreg rewriting' for the lea64_32mem operand. 3468fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner lower_lea64_32mem(&OutMI, 1); 347599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner // FALL THROUGH. 348599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner case X86::LEA64r: 349599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner case X86::LEA16r: 350599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner case X86::LEA32r: 351599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner // LEA should have a segment register, but it must be empty. 352599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner assert(OutMI.getNumOperands() == 1+X86::AddrNumOperands && 353599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner "Unexpected # of LEA operands"); 354599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner assert(OutMI.getOperand(1+X86::AddrSegmentReg).getReg() == 0 && 355599b531a960833719f607d66c97871f1f5ad12c0Chris Lattner "LEA has segment specified!"); 356522e9a0435ebba7b25802992031d0657654c281cChris Lattner break; 357ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVZX16rr8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rr8); break; 358ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVZX16rm8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rm8); break; 359ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVSX16rr8: LowerSubReg32_Op0(OutMI, X86::MOVSX32rr8); break; 360ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVSX16rm8: LowerSubReg32_Op0(OutMI, X86::MOVSX32rm8); break; 361ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVZX64rr32: LowerSubReg32_Op0(OutMI, X86::MOV32rr); break; 362ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVZX64rm32: LowerSubReg32_Op0(OutMI, X86::MOV32rm); break; 363ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOV64ri64i32: LowerSubReg32_Op0(OutMI, X86::MOV32ri); break; 364ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVZX64rr8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rr8); break; 365ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVZX64rm8: LowerSubReg32_Op0(OutMI, X86::MOVZX32rm8); break; 366ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVZX64rr16: LowerSubReg32_Op0(OutMI, X86::MOVZX32rr16); break; 367ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::MOVZX64rm16: LowerSubReg32_Op0(OutMI, X86::MOVZX32rm16); break; 368ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::SETB_C8r: LowerUnaryToTwoAddr(OutMI, X86::SBB8rr); break; 369ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::SETB_C16r: LowerUnaryToTwoAddr(OutMI, X86::SBB16rr); break; 370ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::SETB_C32r: LowerUnaryToTwoAddr(OutMI, X86::SBB32rr); break; 371ff928976f892a63f814a2f5d052213736c242748Chris Lattner case X86::SETB_C64r: LowerUnaryToTwoAddr(OutMI, X86::SBB64rr); break; 37235e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner case X86::MOV8r0: LowerUnaryToTwoAddr(OutMI, X86::XOR8rr); break; 37335e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner case X86::MOV32r0: LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); break; 37428c1d29b09a1d6d92ba91211aceeee59d7f5f07fChris Lattner case X86::MMX_V_SET0: LowerUnaryToTwoAddr(OutMI, X86::MMX_PXORrr); break; 37528c1d29b09a1d6d92ba91211aceeee59d7f5f07fChris Lattner case X86::MMX_V_SETALLONES: 37628c1d29b09a1d6d92ba91211aceeee59d7f5f07fChris Lattner LowerUnaryToTwoAddr(OutMI, X86::MMX_PCMPEQDrr); break; 37728c1d29b09a1d6d92ba91211aceeee59d7f5f07fChris Lattner case X86::FsFLD0SS: LowerUnaryToTwoAddr(OutMI, X86::PXORrr); break; 378be1778fea76e1f63b08f1f838fca88a0c8d9a883Chris Lattner case X86::FsFLD0SD: LowerUnaryToTwoAddr(OutMI, X86::PXORrr); break; 379d363b4ebc7a98483437a5a88aba01dd9facdcd01Jakob Stoklund Olesen case X86::V_SET0PS: LowerUnaryToTwoAddr(OutMI, X86::XORPSrr); break; 380d363b4ebc7a98483437a5a88aba01dd9facdcd01Jakob Stoklund Olesen case X86::V_SET0PD: LowerUnaryToTwoAddr(OutMI, X86::XORPDrr); break; 381d363b4ebc7a98483437a5a88aba01dd9facdcd01Jakob Stoklund Olesen case X86::V_SET0PI: LowerUnaryToTwoAddr(OutMI, X86::PXORrr); break; 38228c1d29b09a1d6d92ba91211aceeee59d7f5f07fChris Lattner case X86::V_SETALLONES: LowerUnaryToTwoAddr(OutMI, X86::PCMPEQDrr); break; 38328c1d29b09a1d6d92ba91211aceeee59d7f5f07fChris Lattner 38435e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner case X86::MOV16r0: 38535e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner LowerSubReg32_Op0(OutMI, X86::MOV32r0); // MOV16r0 -> MOV32r0 38635e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); // MOV32r0 -> XOR32rr 38735e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner break; 38835e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner case X86::MOV64r0: 38935e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner LowerSubReg32_Op0(OutMI, X86::MOV32r0); // MOV64r0 -> MOV32r0 39035e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); // MOV32r0 -> XOR32rr 39135e0e84f93152a20ae40ccf13d6d6ea493953a1cChris Lattner break; 3929248b3208a53ccf31a235efa6b6ce853cb97028cDaniel Dunbar 393c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner // TAILJMPr64, CALL64r, CALL64pcrel32 - These instructions have 3947d4bd203be35a25e31256eeea4ef7628573ffa54Daniel Dunbar // register inputs modeled as normal uses instead of implicit uses. As such, 3957d4bd203be35a25e31256eeea4ef7628573ffa54Daniel Dunbar // truncate off all but the first operand (the callee). FIXME: Change isel. 3967d4bd203be35a25e31256eeea4ef7628573ffa54Daniel Dunbar case X86::TAILJMPr64: 3979248b3208a53ccf31a235efa6b6ce853cb97028cDaniel Dunbar case X86::CALL64r: 3986db0363bdcc81cbb98d5c3731e528655f8baa36eChris Lattner case X86::CALL64pcrel32: { 3999248b3208a53ccf31a235efa6b6ce853cb97028cDaniel Dunbar unsigned Opcode = OutMI.getOpcode(); 4006db0363bdcc81cbb98d5c3731e528655f8baa36eChris Lattner MCOperand Saved = OutMI.getOperand(0); 4016db0363bdcc81cbb98d5c3731e528655f8baa36eChris Lattner OutMI = MCInst(); 4029248b3208a53ccf31a235efa6b6ce853cb97028cDaniel Dunbar OutMI.setOpcode(Opcode); 4036db0363bdcc81cbb98d5c3731e528655f8baa36eChris Lattner OutMI.addOperand(Saved); 4046db0363bdcc81cbb98d5c3731e528655f8baa36eChris Lattner break; 4056db0363bdcc81cbb98d5c3731e528655f8baa36eChris Lattner } 4069248b3208a53ccf31a235efa6b6ce853cb97028cDaniel Dunbar 40752322e7b8b45210c78c164e74048212373d849daDaniel Dunbar // TAILJMPd, TAILJMPd64 - Lower to the correct jump instructions. 408c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner case X86::TAILJMPr: 40952322e7b8b45210c78c164e74048212373d849daDaniel Dunbar case X86::TAILJMPd: 41052322e7b8b45210c78c164e74048212373d849daDaniel Dunbar case X86::TAILJMPd64: { 411c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner unsigned Opcode; 412c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner switch (OutMI.getOpcode()) { 413c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner default: assert(0 && "Invalid opcode"); 414c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner case X86::TAILJMPr: Opcode = X86::JMP32r; break; 415c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner case X86::TAILJMPd: 416c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner case X86::TAILJMPd64: Opcode = X86::JMP_1; break; 417c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner } 418c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner 41952322e7b8b45210c78c164e74048212373d849daDaniel Dunbar MCOperand Saved = OutMI.getOperand(0); 42052322e7b8b45210c78c164e74048212373d849daDaniel Dunbar OutMI = MCInst(); 421c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner OutMI.setOpcode(Opcode); 42252322e7b8b45210c78c164e74048212373d849daDaniel Dunbar OutMI.addOperand(Saved); 42352322e7b8b45210c78c164e74048212373d849daDaniel Dunbar break; 42452322e7b8b45210c78c164e74048212373d849daDaniel Dunbar } 42552322e7b8b45210c78c164e74048212373d849daDaniel Dunbar 426166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner // The assembler backend wants to see branches in their small form and relax 427166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner // them to their large form. The JIT can only handle the large form because 428c441e97220eb8f3fc062d8bdf04d261165428673Chris Lattner // it does not do relaxation. For now, translate the large form to the 429166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner // small one here. 430166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JMP_4: OutMI.setOpcode(X86::JMP_1); break; 431166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JO_4: OutMI.setOpcode(X86::JO_1); break; 432166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JNO_4: OutMI.setOpcode(X86::JNO_1); break; 433166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JB_4: OutMI.setOpcode(X86::JB_1); break; 434166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JAE_4: OutMI.setOpcode(X86::JAE_1); break; 435166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JE_4: OutMI.setOpcode(X86::JE_1); break; 436166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JNE_4: OutMI.setOpcode(X86::JNE_1); break; 437166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JBE_4: OutMI.setOpcode(X86::JBE_1); break; 438166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JA_4: OutMI.setOpcode(X86::JA_1); break; 439166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JS_4: OutMI.setOpcode(X86::JS_1); break; 440166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JNS_4: OutMI.setOpcode(X86::JNS_1); break; 441166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JP_4: OutMI.setOpcode(X86::JP_1); break; 442166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JNP_4: OutMI.setOpcode(X86::JNP_1); break; 443166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JL_4: OutMI.setOpcode(X86::JL_1); break; 444166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JGE_4: OutMI.setOpcode(X86::JGE_1); break; 445166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JLE_4: OutMI.setOpcode(X86::JLE_1); break; 446166604e6ce51fa60910141f2fa1ae17a1b62496aChris Lattner case X86::JG_4: OutMI.setOpcode(X86::JG_1); break; 4473f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar 4483f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar // We don't currently select the correct instruction form for instructions 4493f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar // which have a short %eax, etc. form. Handle this by custom lowering, for 4503f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar // now. 4513f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar // 4523f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar // Note, we are currently not handling the following instructions: 453597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar // MOV64ao8, MOV64o8a 4543f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar // XCHG16ar, XCHG32ar, XCHG64ar 455597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV8mr_NOREX: 456597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV8mr: SimplifyShortMoveForm(OutMI, X86::MOV8ao8); break; 457597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV8rm_NOREX: 458597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV8rm: SimplifyShortMoveForm(OutMI, X86::MOV8o8a); break; 459597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV16mr: SimplifyShortMoveForm(OutMI, X86::MOV16ao16); break; 460597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV16rm: SimplifyShortMoveForm(OutMI, X86::MOV16o16a); break; 461597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV32mr: SimplifyShortMoveForm(OutMI, X86::MOV32ao32); break; 462597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV32rm: SimplifyShortMoveForm(OutMI, X86::MOV32o32a); break; 463597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV64mr: SimplifyShortMoveForm(OutMI, X86::MOV64ao64); break; 464597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar case X86::MOV64rm: SimplifyShortMoveForm(OutMI, X86::MOV64o64a); break; 465597f17d5f1ec86dee1796ad92a66abd98f7bacecDaniel Dunbar 4663f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::ADC8ri: SimplifyShortImmForm(OutMI, X86::ADC8i8); break; 4673f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::ADC16ri: SimplifyShortImmForm(OutMI, X86::ADC16i16); break; 4683f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::ADC32ri: SimplifyShortImmForm(OutMI, X86::ADC32i32); break; 4693f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::ADC64ri32: SimplifyShortImmForm(OutMI, X86::ADC64i32); break; 4703f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::ADD8ri: SimplifyShortImmForm(OutMI, X86::ADD8i8); break; 4713f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::ADD16ri: SimplifyShortImmForm(OutMI, X86::ADD16i16); break; 4723f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::ADD32ri: SimplifyShortImmForm(OutMI, X86::ADD32i32); break; 4733f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::ADD64ri32: SimplifyShortImmForm(OutMI, X86::ADD64i32); break; 4743f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::AND8ri: SimplifyShortImmForm(OutMI, X86::AND8i8); break; 4753f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::AND16ri: SimplifyShortImmForm(OutMI, X86::AND16i16); break; 4763f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::AND32ri: SimplifyShortImmForm(OutMI, X86::AND32i32); break; 4773f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::AND64ri32: SimplifyShortImmForm(OutMI, X86::AND64i32); break; 4783f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::CMP8ri: SimplifyShortImmForm(OutMI, X86::CMP8i8); break; 4793f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::CMP16ri: SimplifyShortImmForm(OutMI, X86::CMP16i16); break; 4803f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::CMP32ri: SimplifyShortImmForm(OutMI, X86::CMP32i32); break; 4813f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::CMP64ri32: SimplifyShortImmForm(OutMI, X86::CMP64i32); break; 4823f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::OR8ri: SimplifyShortImmForm(OutMI, X86::OR8i8); break; 4833f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::OR16ri: SimplifyShortImmForm(OutMI, X86::OR16i16); break; 4843f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::OR32ri: SimplifyShortImmForm(OutMI, X86::OR32i32); break; 4853f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::OR64ri32: SimplifyShortImmForm(OutMI, X86::OR64i32); break; 4863f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::SBB8ri: SimplifyShortImmForm(OutMI, X86::SBB8i8); break; 4873f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::SBB16ri: SimplifyShortImmForm(OutMI, X86::SBB16i16); break; 4883f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::SBB32ri: SimplifyShortImmForm(OutMI, X86::SBB32i32); break; 4893f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::SBB64ri32: SimplifyShortImmForm(OutMI, X86::SBB64i32); break; 4903f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::SUB8ri: SimplifyShortImmForm(OutMI, X86::SUB8i8); break; 4913f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::SUB16ri: SimplifyShortImmForm(OutMI, X86::SUB16i16); break; 4923f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::SUB32ri: SimplifyShortImmForm(OutMI, X86::SUB32i32); break; 4933f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::SUB64ri32: SimplifyShortImmForm(OutMI, X86::SUB64i32); break; 4943f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::TEST8ri: SimplifyShortImmForm(OutMI, X86::TEST8i8); break; 4953f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::TEST16ri: SimplifyShortImmForm(OutMI, X86::TEST16i16); break; 4963f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::TEST32ri: SimplifyShortImmForm(OutMI, X86::TEST32i32); break; 4973f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::TEST64ri32: SimplifyShortImmForm(OutMI, X86::TEST64i32); break; 4983f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::XOR8ri: SimplifyShortImmForm(OutMI, X86::XOR8i8); break; 4993f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::XOR16ri: SimplifyShortImmForm(OutMI, X86::XOR16i16); break; 5003f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::XOR32ri: SimplifyShortImmForm(OutMI, X86::XOR32i32); break; 5013f40b31256b995e05edad1846e8d6c758df09ed8Daniel Dunbar case X86::XOR64ri32: SimplifyShortImmForm(OutMI, X86::XOR64i32); break; 502522e9a0435ebba7b25802992031d0657654c281cChris Lattner } 5038fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner} 5048fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner 50528ff35d030e2f49ff4e4b1544c015ebe011a530bDevang Patel 50614c38ec2afeaf25c53a50c2c65116aca8c889401Chris Lattnervoid X86AsmPrinter::EmitInstruction(const MachineInstr *MI) { 5076e8154354fd879d64c2406131370d61a6b123103Chris Lattner X86MCInstLower MCInstLowering(Mang, *MF, this); 5088fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner switch (MI->getOpcode()) { 50949d915bb9a60b1dc9d1b5313dc8849427a034dfaDale Johannesen case TargetOpcode::DBG_VALUE: 51049d915bb9a60b1dc9d1b5313dc8849427a034dfaDale Johannesen if (isVerbose() && OutStreamer.hasRawTextSupport()) { 51149d915bb9a60b1dc9d1b5313dc8849427a034dfaDale Johannesen std::string TmpStr; 51249d915bb9a60b1dc9d1b5313dc8849427a034dfaDale Johannesen raw_string_ostream OS(TmpStr); 51349d915bb9a60b1dc9d1b5313dc8849427a034dfaDale Johannesen PrintDebugValueComment(MI, OS); 51449d915bb9a60b1dc9d1b5313dc8849427a034dfaDale Johannesen OutStreamer.EmitRawText(StringRef(OS.str())); 51549d915bb9a60b1dc9d1b5313dc8849427a034dfaDale Johannesen } 51649d915bb9a60b1dc9d1b5313dc8849427a034dfaDale Johannesen return; 517343b42e428079363ab09828734b2debfd7dbdc9eDale Johannesen 518c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner case X86::TAILJMPr: 519c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner case X86::TAILJMPd: 520c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner case X86::TAILJMPd64: 521c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner // Lower these as normal, but add some comments. 522c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner OutStreamer.AddComment("TAILCALL"); 523c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner break; 524c5f5626a29d9465eedbaea69b7c11033e97782aeChris Lattner 5258fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner case X86::MOVPC32r: { 5268fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner MCInst TmpInst; 5278fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // This is a pseudo op for a two instruction sequence with a label, which 5288fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // looks like: 5298fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // call "L1$pb" 5308fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // "L1$pb": 5318fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // popl %esi 5328fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner 5338fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // Emit the call. 5348fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner MCSymbol *PICBase = MCInstLowering.GetPICBaseSymbol(); 5358fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner TmpInst.setOpcode(X86::CALLpcrel32); 5368fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // FIXME: We would like an efficient form for this, so we don't have to do a 5378fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // lot of extra uniquing. 5388fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner TmpInst.addOperand(MCOperand::CreateExpr(MCSymbolRefExpr::Create(PICBase, 5398fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner OutContext))); 540c760be99db45492f06a0daf3d6942b0c55817aeeChris Lattner OutStreamer.EmitInstruction(TmpInst); 5418fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner 5428fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // Emit the label. 5438fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner OutStreamer.EmitLabel(PICBase); 5448fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner 5458fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner // popl $reg 5468fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner TmpInst.setOpcode(X86::POP32r); 5478fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner TmpInst.getOperand(0) = MCOperand::CreateReg(MI->getOperand(0).getReg()); 548c760be99db45492f06a0daf3d6942b0c55817aeeChris Lattner OutStreamer.EmitInstruction(TmpInst); 5498fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner return; 550e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner } 551e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner 552e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner case X86::ADD32ri: { 553e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner // Lower the MO_GOT_ABSOLUTE_ADDRESS form of ADD32ri. 554e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner if (MI->getOperand(2).getTargetFlags() != X86II::MO_GOT_ABSOLUTE_ADDRESS) 555e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner break; 556e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner 557e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner // Okay, we have something like: 558e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner // EAX = ADD32ri EAX, MO_GOT_ABSOLUTE_ADDRESS(@MYGLOBAL) 559e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner 560e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner // For this, we want to print something like: 561e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner // MYGLOBAL + (. - PICBASE) 562e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner // However, we can't generate a ".", so just emit a new label here and refer 563b0f129a5d9e07870b3cd69b3a61fb69554ae774dChris Lattner // to it. 56477e76940269b1bed36bc31ee5139b5c90fd13836Chris Lattner MCSymbol *DotSym = OutContext.CreateTempSymbol(); 565e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner OutStreamer.EmitLabel(DotSym); 566e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner 567e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner // Now that we have emitted the label, lower the complex operand expression. 5683484110c67d88f5ead0f0795b880056174f66811Chris Lattner MCSymbol *OpSym = MCInstLowering.GetSymbolFromOperand(MI->getOperand(2)); 569e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner 570e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner const MCExpr *DotExpr = MCSymbolRefExpr::Create(DotSym, OutContext); 571e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner const MCExpr *PICBase = 572e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner MCSymbolRefExpr::Create(MCInstLowering.GetPICBaseSymbol(), OutContext); 573e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner DotExpr = MCBinaryExpr::CreateSub(DotExpr, PICBase, OutContext); 574e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner 575e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner DotExpr = MCBinaryExpr::CreateAdd(MCSymbolRefExpr::Create(OpSym,OutContext), 576e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner DotExpr, OutContext); 577e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner 578e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner MCInst TmpInst; 579e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner TmpInst.setOpcode(X86::ADD32ri); 580e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(0).getReg())); 581e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner TmpInst.addOperand(MCOperand::CreateReg(MI->getOperand(1).getReg())); 582e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner TmpInst.addOperand(MCOperand::CreateExpr(DotExpr)); 583c760be99db45492f06a0daf3d6942b0c55817aeeChris Lattner OutStreamer.EmitInstruction(TmpInst); 584e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner return; 585e9434dbff40aafcd7e33210f88ff79e0dc7c833dChris Lattner } 5868fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner } 5878fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner 5888fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner MCInst TmpInst; 5898fea32f9ff5cec2165661a3da986abe29c9bddb1Chris Lattner MCInstLowering.Lower(MI, TmpInst); 590c760be99db45492f06a0daf3d6942b0c55817aeeChris Lattner OutStreamer.EmitInstruction(TmpInst); 591522e9a0435ebba7b25802992031d0657654c281cChris Lattner} 592cae05cb324031b16a71c56a2a01b489a7c28d365Chris Lattner 593