mtune

Performs optimizations for a specified CPU.

IDE Equivalent

Windows: None

Linux: Optimization > Optimize for Intel processor

Mac OS: None

Architectures

IA-32 architecture, IA-64 architecture

Syntax

Linux and Mac OS:	-mtune=processor
Windows:	None

Arguments

processor	Is the CPU for which the compiler should perform optimizations. Possible values on systems using IA-32 architecture are:
	pentium	Optimizes for Intel® Pentium® processors.
	pentium-mmx	Optimizes for Intel® Pentium® with MMX™ technology.
	pentiumpro	Optimizes for Intel® Pentium® Pro, Intel Pentium II, and Intel Pentium III processors.
	pentium4	Optimizes for Intel® Pentium® 4 processors.
	pentium4m	Optimizes for Intel® Pentium® 4 processors with MMX™ technology.
	Possible values on systems using IA-64 architecture are:
	itanium	Optimizes for systems using IA-64 architecture.
	itanium2	Optimizes for Intel® Itanium® 2 processors.
	itanium2-p9000	Optimizes for Dual-Core Intel® Itanium® 2 processor 9000 series. This option affects the order of the generated instructions, but the generated instructions are limited to Intel® Itanium® 2 processor instructions unless the program uses (executes) intrinsics specific to the Dual-Core Intel® Itanium® 2 processor 9000 series.

Default

pentium4	On systems using IA-32 architecture, the compiler optimizes for Intel® Pentium® 4 processors.
itanium2	On systems using IA-64 architecture, the compiler optimizes for Intel® Itanium® 2 processors.

Description

This option performs optimizations for a specified CPU.

Alternate Options

-mtune	Linux: -mcpu (this is a deprecated option) Mac OS: None Windows: None
-mtune=itanium	Linux: -mcpu=itanium (-mcpu is a deprecated option) Mac OS: None Windows: /G1
-mtune=itanium2	Linux: -mcpu=itanium2 (-mcpu is a deprecated option) Mac OS: None Windows: /G2
-mtune=itanium2-p9000	Linux: -mcpu=itanium2-p9000 (-mcpu is a deprecated option) Mac OS: None Windows: /G2-p9000