march

generic

Generates code for the compiler's default behavior.

core-avx2

Generates 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

Generates 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

Generates code for processors that support Intel® Advanced Vector Extensions (Intel® AVX), Intel® SSE4.2, SSE4.1, SSE3, SSE2, SSE, and SSSE3 instructions.

corei7

Generates 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

Generates code for processors that support MOVBE instructions, depending on the setting of option -minstruction (Linux* OS and OS X*) or /Qinstruction (Windows* OS). May also generate code for SSSE3 instructions and Intel® SSE3, SSE2, and SSE instructions.

core2

Generates code for the Intel® Core™ 2 processor family.

pentium-mmx

Generates for Intel® Pentium® with MMX technology.

pentiumpro

Generates for Intel® Pentium® Pro, Intel Pentium II, and Intel Pentium III processors.

pentium4m

Generates for Intel® Pentium® 4 processors with MMX technology.

pentium-m
pentium4
pentium3
pentium

Generates code for Intel® Pentium® processors. Value pentium3 is only available on Linux* OS.