1023 void X86_64Assembler::rex(bool force, bool w, Register* r, Register* x, Register* b) {
1029   uint8_t rex = force ? 0x40 : 0;
1031     rex |= 0x48;  // REX.W000
1034     rex |= 0x44;  // REX.0R00
1038     rex |= 0x42;  // REX.00X0
1042     rex |= 0x41;  // REX.000B
1045   if (rex != 0) {
1046     EmitUint8(rex);
1056   uint8_t rex = mem->rex();
1058     rex |= 0x40;  // REX.0000
1061     rex |= 0x48;  // REX.W000
1064     rex |= 0x44;  // REX.0R00
1067   if (rex != 0) {
1068     EmitUint8(rex);
1620   uint8_t rex = force ? 0x40 : 0;  in EmitOptionalRex()  local
1622     rex |= 0x48;  // REX.W000  in EmitOptionalRex()
1625     rex |= 0x44;  // REX.0R00  in EmitOptionalRex()
1628     rex |= 0x42;  // REX.00X0  in EmitOptionalRex()
1631     rex |= 0x41;  // REX.000B  in EmitOptionalRex()
1633   if (rex != 0) {  in EmitOptionalRex()
1634     EmitUint8(rex);  in EmitOptionalRex()
1659   uint8_t rex = operand.rex();  in EmitOptionalRex32()  local
1660   if (rex != 0) {  in EmitOptionalRex32()
1661     EmitUint8(rex);  in EmitOptionalRex32()
1666   uint8_t rex = operand.rex();  in EmitOptionalRex32()  local
1668     rex |= 0x44;  // REX.0R00  in EmitOptionalRex32()
1670   if (rex != 0) {  in EmitOptionalRex32()
1671     EmitUint8(rex);  in EmitOptionalRex32()
1676   uint8_t rex = operand.rex();  in EmitOptionalRex32()  local
1678     rex |= 0x44;  // REX.0R00  in EmitOptionalRex32()
1680   if (rex != 0) {  in EmitOptionalRex32()
1681     EmitUint8(rex);  in EmitOptionalRex32()
1694   uint8_t rex = 0x48 | operand.rex();  // REX.W000  in EmitRex64()  local
1696     rex |= 0x44;  // REX.0R00  in EmitRex64()
1698   if (rex != 0) {  in EmitRex64()
1699     EmitUint8(rex);  in EmitRex64()
1708   uint8_t rex = 0x40 | operand.rex();  // REX.0000  in EmitOptionalByteRegNormalizingRex32()  local
1710     rex |= 0x44;  // REX.0R00  in EmitOptionalByteRegNormalizingRex32()
1712   if (rex != 0) {  in EmitOptionalByteRegNormalizingRex32()
1713     EmitUint8(rex);  in EmitOptionalByteRegNormalizingRex32()