The compiler testing that was carried out on Monday were Cortex-A15 GCC 4.7 vs. 4.8 benchmarks. The A15 was in the form of a dual-core Samsung Exynos 5 Dual 1.7GHz SoC found on the Google Series 5 Chromebook. This testing is similar but was done from a NVIDIA Tegra 3 Cardhu tablet with four 1.4GHz ARM Cortex-A9 cores.
GCC 4.7.2 was compared to GCC 4.8.0 2012-02-23. Benchmark results in full are available on OpenBenchmarking.org via 1302266-FO-NVIDIATEG06.
Overall, these results plus the other results, show there are some performance gains to find with the quad-core ARM Cortex-A9 with the forthcoming GCC 4.8 compiler. GCC 4.8 should be officially released by April, if all goes according to plan, with its many new features.