diff options
| -rw-r--r-- | lib/Target/X86/X86CodeEmitter.cpp | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp index e6cd412341..15b7745277 100644 --- a/lib/Target/X86/X86CodeEmitter.cpp +++ b/lib/Target/X86/X86CodeEmitter.cpp @@ -558,16 +558,10 @@ void Emitter::emitInstruction(const MachineInstr &MI, bool Need0FPrefix = false; switch (Desc->TSFlags & X86II::Op0Mask) { - case X86II::TB: - Need0FPrefix = true; // Two-byte opcode prefix - break; - case X86II::T8: - MCE.emitByte(0x0F); - MCE.emitByte(0x38); - break; - case X86II::TA: - MCE.emitByte(0x0F); - MCE.emitByte(0x3A); + case X86II::TB: // Two-byte opcode prefix + case X86II::T8: // 0F 38 + case X86II::TA: // 0F 3A + Need0FPrefix = true; break; case X86II::REP: break; // already handled. case X86II::XS: // F3 0F @@ -599,6 +593,15 @@ void Emitter::emitInstruction(const MachineInstr &MI, if (Need0FPrefix) MCE.emitByte(0x0F); + switch (Desc->TSFlags & X86II::Op0Mask) { + case X86II::T8: // 0F 38 + MCE.emitByte(0x38); + break; + case X86II::TA: // 0F 3A + MCE.emitByte(0x3A); + break; + } + // If this is a two-address instruction, skip one of the register operands. unsigned NumOps = Desc->getNumOperands(); unsigned CurOp = 0; |