b81e304ac0
The modification only uses the unique part of the analysis_update function. Pass byte to byte conformance test on both ARMv7 and AArch64, and the single function performance is similar with original assembly version on different platforms. If not specified, the code is compiled by GCC 4.6. The result is the "X version / C version" ratio, and the less is better. | run 100k times | cortex-a7 | cortex-a9 | cortex-a15 | | use C as the base on each | (1.2Ghz) | (1.0Ghz) | (1.7Ghz) | | CPU target | | | | |----------------------------+-----------+-----------+------------| | Neon asm | 15.61% | 20.15% | 14.89% | | Neon inline asm (LLVM 3.4) | 25.98% | 33.96% | 18.18% | | Neon intrinsics (GCC 4.6) | 22.06% | 27.01% | 19.24% | | Neon intrinsics (GCC 4.8) | 17.28% | 18.23% | 18.55% | | Neon intrinsics (LLVM 3.4) | 21.02% | 19.98% | 16.76% | BUG= R=andrew@webrtc.org Review URL: https://webrtc-codereview.appspot.com/28849004 Patch from Zhongwei Yao <zhongwei.yao@arm.com>. git-svn-id: http://webrtc.googlecode.com/svn/trunk@7596 4adac7df-926f-26a2-2b94-8c16560cd09d