diff options
Diffstat (limited to 'lib/Target/X86/X86CodeEmitter.cpp')
| -rw-r--r-- | lib/Target/X86/X86CodeEmitter.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp index be6319cd0c..83e5e102d5 100644 --- a/lib/Target/X86/X86CodeEmitter.cpp +++ b/lib/Target/X86/X86CodeEmitter.cpp @@ -470,6 +470,9 @@ void Emitter::emitInstruction(MachineInstr &MI) { unsigned Opcode = MI.getOpcode(); const TargetInstrDescriptor &Desc = II->get(Opcode); + // Emit the repeat opcode prefix as needed. + if ((Desc.TSFlags & X86II::Op0Mask) == X86II::REP) MCE.emitByte(0xF3); + // Emit instruction prefixes if necessary if (Desc.TSFlags & X86II::OpSize) MCE.emitByte(0x66);// Operand size... @@ -477,6 +480,7 @@ void Emitter::emitInstruction(MachineInstr &MI) { case X86II::TB: MCE.emitByte(0x0F); // Two-byte opcode prefix break; + case X86II::REP: break; // already handled. case X86II::D8: case X86II::D9: case X86II::DA: case X86II::DB: case X86II::DC: case X86II::DD: case X86II::DE: case X86II::DF: MCE.emitByte(0xD8+ |