mtune

IDE Equivalent

Windows: None

Linux: Optimization > Optimize for Intel processor

Mac OS X: None

Architectures

IA-32, Intel® 64 architectures

Syntax

Linux and Mac OS X:

-mtune=processor

Windows:

None

Arguments

processor

Is the processor for which the compiler should perform optimizations. Possible values are:

generic	Generates code for the compiler's default behavior.
core2	Optimizes for the Intel® Core™ 2 processor family, including support for MMX™, Intel® SSE, SSE2, SSE3 and SSSE3 instruction sets.
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.

Default

generic

Code is generated for the compiler's default behavior.

Description

This option performs optimizations for specific processors.

The resulting executable is backwards compatible and generated code is optimized for specific processors. For example, code generated with -mtune=pentium4 will run correctly on Core2 processors, but it might not run as fast as if it had been generated using -mtune=core2.

The following table shows on which architecture you can use each value.

	Architecture
`processor` Value	IA-32 architecture	Intel® 64 architecture
generic	X	X
core2	X	X
pentium	X
pentium-mmx	X
pentiumpro	X
pentium4	X
pentium4m	X

Optimization Notice
Intel’s compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice. Notice revision #20110804

Optimization Notice

Intel’s compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804

Alternate Options

-mtune

Linux: -mcpu (this is a deprecated option)

Mac OS X: None

Windows: None