IA-32体系结构包括了x86_64吗?

weichuang02

到底包不包括?

flyd1005

IA-32 (Intel Architecture, 32-bit), also known as x86-32, i386[α] or x86,[α] is the CISC[1] instruction-set architecture of Intel's most commercially successful microprocessors, and was first implemented in the Intel 80386 as a 32-bit extension of x86 architecture. This architecture has defined the instruction set for the family of microprocessors currently installed in most personal computers in the world, although it is now being supplanted by x86-64.

So IA-32 == x86-32.

NalaGinrut

x86-64 is an extension of the IA-32 32-bit version of the x86 instruction set.
也就是所谓的 IA-32e

IA-64根本就不是x86指令集，是全新的RISC的指令集，所以沾到x86字样就肯定不是IA-64
x86-64就是在原有x86-32基础上加上了64位的支持而已，所以它其实是IA-32，但是一般不这么说，因为太混乱了，但实质就是这么一回事。

bensenq

X86_64其实应该叫AMD64...