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IA-64 (Intel Itanium architecture) is the instruction set architecture (ISA) of the discontinued Itanium family of 64-bit Intel microprocessors. The basic ISA specification originated at Hewlett-Packard (HP), and was subsequently implemented by Intel in collaboration with HP.
Itanium (/ aɪ ˈ t eɪ n i ə m /; eye-TAY-nee-əm) is a discontinued family of 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64). The Itanium architecture originated at Hewlett-Packard (HP), and was later jointly developed by HP and Intel.
Intel releases the instruction set for the IA-64 architecture. AMD publicly discloses its set of 64-bit extensions to IA-32, called x86-64 (later branded AMD64). 2000 IBM ships its first 64-bit z/Architecture mainframe, the zSeries z900. z/Architecture is a 64-bit version of the 32-bit ESA/390 architecture, a descendant of the 32-bit System/360 ...
The use of predication is essential in IA-64's implementation of software pipelining because it avoids the need for writing separated code for prologs and epilogs. [clarification needed] In the x86 architecture, a family of conditional move instructions (CMOV and FCMOV) were added to the architecture by the Intel Pentium Pro (1995) processor.
AMD64 (also variously referred to by AMD in their literature and documentation as “AMD 64-bit Technology” and “AMD x86-64 Architecture”) was created as an alternative to the radically different IA-64 architecture designed by Intel and Hewlett-Packard, which was backward-incompatible with IA-32, the 32-bit version of the x86 architecture.
The compilers generate code for IA-32 and Intel 64 processors and certain non-Intel but compatible processors, such as certain AMD processors. A specific release of the compiler (11.1) remains available for development of Linux-based applications for IA-64 processors. On Windows, it is known as Intel Visual Fortran. [2]
Windows XP 64-bit Edition, an operating system for IA-64 processors Topics referred to by the same term This disambiguation page lists articles associated with the title Windows XP 64-bit .
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