diff options
Diffstat (limited to 'lib/Target/X86/X86CodeEmitter.cpp')
| -rw-r--r-- | lib/Target/X86/X86CodeEmitter.cpp | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp index 5d72b44..14385ed 100644 --- a/lib/Target/X86/X86CodeEmitter.cpp +++ b/lib/Target/X86/X86CodeEmitter.cpp @@ -840,7 +840,7 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, unsigned char VEX_W = 0; // XOP: Use XOP prefix byte 0x8f instead of VEX. - unsigned char XOP = 0; + bool XOP = false; // VEX_5M (VEX m-mmmmm field): // @@ -850,7 +850,8 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, // 0b00011: implied 0F 3A leading opcode bytes // 0b00100-0b11111: Reserved for future use // 0b01000: XOP map select - 08h instructions with imm byte - // 0b10001: XOP map select - 09h instructions with no imm byte + // 0b01001: XOP map select - 09h instructions with no imm byte + // 0b01010: XOP map select - 0Ah instructions with imm dword unsigned char VEX_5M = 0x1; // VEX_4V (VEX vvvv field): a register specifier @@ -882,7 +883,7 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, VEX_W = 1; if ((TSFlags >> X86II::VEXShift) & X86II::XOP) - XOP = 1; + XOP = true; if ((TSFlags >> X86II::VEXShift) & X86II::VEX_L) VEX_L = 1; @@ -919,11 +920,11 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, case X86II::XOP9: VEX_5M = 0x9; break; - case X86II::A6: // Bypass: Not used by VEX - case X86II::A7: // Bypass: Not used by VEX - case X86II::TB: // Bypass: Not used by VEX - case 0: - break; // No prefix! + case X86II::XOPA: + VEX_5M = 0xA; + break; + case X86II::TB: // VEX_5M/VEX_PP already correct + break; } @@ -982,11 +983,14 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, // FMA4: // dst(ModR/M.reg), src1(VEX_4V), src2(ModR/M), src3(VEX_I8IMM) // dst(ModR/M.reg), src1(VEX_4V), src2(VEX_I8IMM), src3(ModR/M), - if (X86II::isX86_64ExtendedReg(MI.getOperand(0).getReg())) + if (X86II::isX86_64ExtendedReg(MI.getOperand(CurOp).getReg())) VEX_R = 0x0; + CurOp++; - if (HasVEX_4V) - VEX_4V = getVEXRegisterEncoding(MI, 1); + if (HasVEX_4V) { + VEX_4V = getVEXRegisterEncoding(MI, CurOp); + CurOp++; + } if (X86II::isX86_64ExtendedReg( MI.getOperand(MemOperand+X86::AddrBaseReg).getReg())) @@ -996,7 +1000,7 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, VEX_X = 0x0; if (HasVEX_4VOp3) - VEX_4V = getVEXRegisterEncoding(MI, X86::AddrNumOperands+1); + VEX_4V = getVEXRegisterEncoding(MI, CurOp+X86::AddrNumOperands); break; case X86II::MRM0m: case X86II::MRM1m: case X86II::MRM2m: case X86II::MRM3m: @@ -1006,7 +1010,7 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, // MemAddr // src1(VEX_4V), MemAddr if (HasVEX_4V) - VEX_4V = getVEXRegisterEncoding(MI, 0); + VEX_4V = getVEXRegisterEncoding(MI, CurOp++); if (X86II::isX86_64ExtendedReg( MI.getOperand(MemOperand+X86::AddrBaseReg).getReg())) @@ -1059,8 +1063,10 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, case X86II::MRM6r: case X86II::MRM7r: // MRM0r-MRM7r instructions forms: // dst(VEX_4V), src(ModR/M), imm8 - VEX_4V = getVEXRegisterEncoding(MI, 0); - if (X86II::isX86_64ExtendedReg(MI.getOperand(1).getReg())) + VEX_4V = getVEXRegisterEncoding(MI, CurOp); + CurOp++; + + if (X86II::isX86_64ExtendedReg(MI.getOperand(CurOp).getReg())) VEX_B = 0x0; break; default: // RawFrm |