AMD 64偷工减料被抓？

jocover

http://msdn.microsoft.com/en-us/library/bb514094.aspx

This intrinsic generates the cmpxchg16b  instruction (with the lock prefix) to perform a 128-bit locked compare and exchange. Early versions of AMD 64-bit hardware do not support this instruction. To check for hardware support for the cmpxchg16b instruction, call the __cpuid intrinsic with InfoType=0x00000001 (standard function 1). Bit 13 of CPUInfo[2] (ECX) is 1 if the instruction is supported.

jocover

vs2008 x64下没法内嵌汇编，所以只能用intrinsics了