diff options
Diffstat (limited to 'lib/Target/X86/X86MCInstLower.cpp')
| -rw-r--r-- | lib/Target/X86/X86MCInstLower.cpp | 68 |
1 files changed, 67 insertions, 1 deletions
diff --git a/lib/Target/X86/X86MCInstLower.cpp b/lib/Target/X86/X86MCInstLower.cpp index 05a5de6..cbe6db2 100644 --- a/lib/Target/X86/X86MCInstLower.cpp +++ b/lib/Target/X86/X86MCInstLower.cpp @@ -374,6 +374,8 @@ ReSimplify: case X86::MOV32r0: LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); break; case X86::FsFLD0SS: LowerUnaryToTwoAddr(OutMI, X86::PXORrr); break; case X86::FsFLD0SD: LowerUnaryToTwoAddr(OutMI, X86::PXORrr); break; + case X86::VFsFLD0SS: LowerUnaryToTwoAddr(OutMI, X86::VPXORrr); break; + case X86::VFsFLD0SD: LowerUnaryToTwoAddr(OutMI, X86::VPXORrr); break; case X86::V_SET0PS: LowerUnaryToTwoAddr(OutMI, X86::XORPSrr); break; case X86::V_SET0PD: LowerUnaryToTwoAddr(OutMI, X86::XORPDrr); break; case X86::V_SET0PI: LowerUnaryToTwoAddr(OutMI, X86::PXORrr); break; @@ -525,6 +527,66 @@ ReSimplify: } } +static void LowerTlsAddr(MCStreamer &OutStreamer, + X86MCInstLower &MCInstLowering, + const MachineInstr &MI) { + bool is64Bits = MI.getOpcode() == X86::TLS_addr64; + MCContext &context = OutStreamer.getContext(); + + if (is64Bits) { + MCInst prefix; + prefix.setOpcode(X86::DATA16_PREFIX); + OutStreamer.EmitInstruction(prefix); + } + MCSymbol *sym = MCInstLowering.GetSymbolFromOperand(MI.getOperand(3)); + const MCSymbolRefExpr *symRef = + MCSymbolRefExpr::Create(sym, MCSymbolRefExpr::VK_TLSGD, context); + + MCInst LEA; + if (is64Bits) { + LEA.setOpcode(X86::LEA64r); + LEA.addOperand(MCOperand::CreateReg(X86::RDI)); // dest + LEA.addOperand(MCOperand::CreateReg(X86::RIP)); // base + LEA.addOperand(MCOperand::CreateImm(1)); // scale + LEA.addOperand(MCOperand::CreateReg(0)); // index + LEA.addOperand(MCOperand::CreateExpr(symRef)); // disp + LEA.addOperand(MCOperand::CreateReg(0)); // seg + } else { + LEA.setOpcode(X86::LEA32r); + LEA.addOperand(MCOperand::CreateReg(X86::EAX)); // dest + LEA.addOperand(MCOperand::CreateReg(0)); // base + LEA.addOperand(MCOperand::CreateImm(1)); // scale + LEA.addOperand(MCOperand::CreateReg(X86::EBX)); // index + LEA.addOperand(MCOperand::CreateExpr(symRef)); // disp + LEA.addOperand(MCOperand::CreateReg(0)); // seg + } + OutStreamer.EmitInstruction(LEA); + + if (is64Bits) { + MCInst prefix; + prefix.setOpcode(X86::DATA16_PREFIX); + OutStreamer.EmitInstruction(prefix); + prefix.setOpcode(X86::DATA16_PREFIX); + OutStreamer.EmitInstruction(prefix); + prefix.setOpcode(X86::REX64_PREFIX); + OutStreamer.EmitInstruction(prefix); + } + + MCInst call; + if (is64Bits) + call.setOpcode(X86::CALL64pcrel32); + else + call.setOpcode(X86::CALLpcrel32); + StringRef name = is64Bits ? "__tls_get_addr" : "___tls_get_addr"; + MCSymbol *tlsGetAddr = context.GetOrCreateSymbol(name); + const MCSymbolRefExpr *tlsRef = + MCSymbolRefExpr::Create(tlsGetAddr, + MCSymbolRefExpr::VK_PLT, + context); + + call.addOperand(MCOperand::CreateExpr(tlsRef)); + OutStreamer.EmitInstruction(call); +} void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) { X86MCInstLower MCInstLowering(Mang, *MF, *this); @@ -559,7 +621,11 @@ void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) { // Lower these as normal, but add some comments. OutStreamer.AddComment("TAILCALL"); break; - + + case X86::TLS_addr32: + case X86::TLS_addr64: + return LowerTlsAddr(OutStreamer, MCInstLowering, *MI); + case X86::MOVPC32r: { MCInst TmpInst; // This is a pseudo op for a two instruction sequence with a label, which |