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GCC 4.9 Is Friendly Toward Intel's Silvermont

Compiler

Published on 27 June 2013 06:52 AM EDT
Written by Michael Larabel in Compiler
3 Comments

The GCC 4.9 compiler that's still in early stages of development can generate binaries optimized for Intel's forthcoming Atom "Silvermont" hardware via the new "slm" CPU type.

Silvermont is Intel's forthcoming CPU core to be debuted before year's end for mobile/tablet use and found within the Valley View SoC / Bay Trail. Silvermont was documented in more detail earlier this month at Computex.

Anyhow, the news is that with GCC 4.9, one can target Intel Silvermont optimized binaries now by using -march=slm. The low-power Silvermont CPUs don't present any new CPU instruction set extensions or even the new Haswell instructions like AVX2/BMI/BMI2/FMA, but the "slm" CPU type just enables MOVBE, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, and SSE4.2. Over the original Atom CPU type for GCC, the Silvermont CPU type exposes SSE 4.1 and SSE 4.2.

Look for GCC 4.9 to be likely released in H1'2014. The different CPU types currently offered by the GNU Compiler Collection can be found via their updated online documentation.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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