ARM Cortex-A15 Compiler Optimizations

Written by Michael Larabel in Software on 28 February 2013 at 10:28 AM EST. Page 1 of 3. Add A Comment.

The latest in our series of ARM Linux benchmarking is looking at the impact of GCC compiler optimizations on the ARM Cortex A15-based Samsung Exynos 5 Dual.

The most notable ARM Linux benchmarks delivered in the past few days was the Benchmarking Ubuntu Linux On The Google Nexus 10 article that looked at the performance of Ubuntu on the Google Nexus 10 (Exynos 5 Dual) against several other ARM Cortex A15 and Cortex A9 SoCs. AMD and Intel x86 CPUs were also tossed into the mix. The article is well worth reading and looking at the extensive benchmark results.

Other ARM Linux benchmarks published this week were GCC 4.8 To Bump Up Speed On NVIDIA's Tegra 3 and GCC 4.8 Compiler Performance On ARM Cortex-A15. Now in this quick end of the month article are Cortex-A15 benchmarks when exploring the impact of different optimization levels for the GNU Compiler Collection with ARM.

ARM GCC 4.7.2 Cortex-A15 Compiler Optimizations

The testing is similar to the Benchmarking The New Optimization Level In GCC 4.8 article from earlier this month of testing the main compiler optimization levels. For this testing though, it's an ARMv7 Cortex A15 rather than x86_64 and is using GCC 4.7.2. Tested optimization levels were -Os, -O0, -O1, -O2, -O3, and -Ofast. For those unfamiliar with GCC compiler optimization options, see their online documentation.

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