mtune, tune

Syntax

Linux:

-mtune=processor

Windows:

/tune:processor

Arguments

processor

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

generic	Optimizes code for the compiler's default behavior.
alderlake amberlake broadwell cannonlake cascadelake coffeelake cooperlake goldmont goldmont-plus haswell icelake-client (or icelake) icelake-server ivybridge kabylake knl knm rocketlake sandybridge sapphirerapids silvermont skylake skylake-avx512 tigerlake tremont whiskeylake	Optimizes code for processors that support the specified Intel® processor or microarchitecture code name. Keywords knl and silvermont are only available on Windows* and Linux* systems. Keyword icelake is deprecated and may be removed in a future release.
core-avx2	Optimizes code for processors that support Intel® Advanced Vector Extensions 2 (Intel® AVX2), Intel® AVX, SSE4.2, SSE4.1, SSE3, SSE2, SSE, and SSSE3 instructions.
core-avx-i	Optimizes code for processors that support Float-16 conversion instructions and the RDRND instruction, Intel® Advanced Vector Extensions (Intel® AVX), Intel® SSE4.2, SSE4.1, SSE3, SSE2, SSE, and SSSE3 instructions.
corei7-avx	Optimizes code for processors that support Intel® Advanced Vector Extensions (Intel® AVX), Intel® SSE4.2, SSE4.1, SSE3, SSE2, SSE, and SSSE3 instructions.
corei7	Optimizes code for processors that support Intel® SSE4 Efficient Accelerated String and Text Processing instructions. May also generate code for Intel® SSE4 Vectorizing Compiler and Media Accelerator, Intel® SSE3, SSE2, SSE, and SSSE3 instructions.
atom	Optimizes code for processors that support MOVBE instructions. May also generate code for SSSE3 instructions and Intel® SSE3, SSE2, and SSE instructions.
core2	Optimizes for the Intel® Core™2 processor family, including support for MMX™, Intel® SSE, SSE2, SSE3 and SSSE3 instruction sets.
pentium-mmx	Optimizes for Intel® Pentium® with MMX technology.
pentiumpro	Optimizes for Intel® Pentium® Pro, Intel Pentium II, and Intel Pentium III processors.
pentium4m	Optimizes for Intel® Pentium® 4 processors with MMX technology.
pentium-m pentium4 pentium3 pentium	Optimizes code for Intel® Pentium® processors. Value pentium3 is only available on Linux* systems.

Default

generic

Code is generated for the compiler's default behavior.

Description

This option performs optimizations for specific processors but does not cause extended instruction sets to be used (unlike -march).

The resulting executable is backwards compatible and generated code is optimized for specific processors. For example, code generated with -mtune=core2 or /tune:core2 will run correctly on 4th Generation Intel® Core™ processors, but it might not run as fast as if it had been generated using -mtune=haswell or /tune:haswell. Code generated with -mtune=haswell (/tune:haswell) or -mtune=core-avx2 (/tune:core-avx2) will also run correctly on Intel® Core™2 processors, but it might not run as fast as if it had been generated using -mtune=core2 or /tune:core2. This is in contrast to code generated with -march=core-avx2, which will not run correctly on older processors such as Intel® Core™2 processors.

Product and Performance Information
Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex. Notice revision #20201201

Product and Performance Information

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.

Notice revision #20201201

IDE Equivalent

Visual Studio: Code Generation [Intel C++] >Intel Processor Microarchitecture-Specific Optimization

Eclipse: Code Generation > Intel Processor Microarchitecture-Specific Optimization

Xcode: Code Generation > Intel Processor Microarchitecture-Specific Optimization

Alternate Options

-mtune

Linux: -mcpu (this is a deprecated option)

Windows: None