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Hash : f3a8684c
Author :
Date : 2016-01-07T00:19:43
SSE2 SIMD implementation of Huffman encoding Full-color compression speedups relative to libjpeg-turbo 1.4.2: 2.8 GHz Intel Xeon W3530, Linux, 64-bit: 2.2-18% (avg. 9.5%) 2.8 GHz Intel Xeon W3530, Linux, 32-bit: 10-25% (avg. 17%) 2.3 GHz AMD A10-4600M APU, Linux, 64-bit: 4.9-17% (avg. 11%) 2.3 GHz AMD A10-4600M APU, Linux, 32-bit: 8.8-19% (avg. 15%) 3.0 GHz Intel Core i7, OS X, 64-bit: 3.5-16% (avg. 10%) 3.0 GHz Intel Core i7, OS X, 32-bit: 4.8-14% (avg. 11%) 2.6 GHz AMD Athlon 64 X2 5050e: Performance-neutral (give or take a few percent) Full-color compression speedups relative to IPP: 2.8 GHz Intel Xeon W3530, Linux, 64-bit: 4.8-34% (avg. 19%) 2.8 GHz Intel Xeon W3530, Linux, 32-bit: -19%-7.0% (avg. -7.0%) Refer to #42 for discussion. Numerous other approaches were attempted, but this one proved to be the most performant across all platforms. This commit also fixes #3 (works around, really-- the clang-compiled version of jchuff.c still performs 20% worse than its GCC-compiled counterpart, but that code is now bypassed by the new SSE2 Huffman algorithm.) Based on: https://github.com/mayeut/libjpeg-turbo/commit/2cb4d41330e1edc4469f6b97ba73b73abfbeb02f https://github.com/mayeut/libjpeg-turbo/commit/36c94e050d117912adbff9fbcc6fe307df240168
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Files
- CMakeLists.txt
- Makefile.am
- jccolext-altivec.c
- jccolext-mmx.asm
- jccolext-sse2-64.asm
- jccolext-sse2.asm
- jccolor-altivec.c
- jccolor-mmx.asm
- jccolor-sse2-64.asm
- jccolor-sse2.asm
- jcgray-altivec.c
- jcgray-mmx.asm
- jcgray-sse2-64.asm
- jcgray-sse2.asm
- jcgryext-altivec.c
- jcgryext-mmx.asm
- jcgryext-sse2-64.asm
- jcgryext-sse2.asm
- jchuff-sse2-64.asm
- jchuff-sse2.asm
- jcolsamp.inc
- jcsample-altivec.c
- jcsample-mmx.asm
- jcsample-sse2-64.asm
- jcsample-sse2.asm
- jcsample.h
- jdcolext-altivec.c
- jdcolext-mmx.asm
- jdcolext-sse2-64.asm
- jdcolext-sse2.asm
- jdcolor-altivec.c
- jdcolor-mmx.asm
- jdcolor-sse2-64.asm
- jdcolor-sse2.asm
- jdct.inc
- jdmerge-altivec.c
- jdmerge-mmx.asm
- jdmerge-sse2-64.asm
- jdmerge-sse2.asm
- jdmrgext-altivec.c
- jdmrgext-mmx.asm
- jdmrgext-sse2-64.asm
- jdmrgext-sse2.asm
- jdsample-altivec.c
- jdsample-mmx.asm
- jdsample-sse2-64.asm
- jdsample-sse2.asm
- jfdctflt-3dn.asm
- jfdctflt-sse-64.asm
- jfdctflt-sse.asm
- jfdctfst-altivec.c
- jfdctfst-mmx.asm
- jfdctfst-sse2-64.asm
- jfdctfst-sse2.asm
- jfdctint-altivec.c
- jfdctint-mmx.asm
- jfdctint-sse2-64.asm
- jfdctint-sse2.asm
- jidctflt-3dn.asm
- jidctflt-sse.asm
- jidctflt-sse2-64.asm
- jidctflt-sse2.asm
- jidctfst-altivec.c
- jidctfst-mmx.asm
- jidctfst-sse2-64.asm
- jidctfst-sse2.asm
- jidctint-altivec.c
- jidctint-mmx.asm
- jidctint-sse2-64.asm
- jidctint-sse2.asm
- jidctred-mmx.asm
- jidctred-sse2-64.asm
- jidctred-sse2.asm
- jpeg_nbits_table.inc
- jquant-3dn.asm
- jquant-mmx.asm
- jquant-sse.asm
- jquantf-sse2-64.asm
- jquantf-sse2.asm
- jquanti-altivec.c
- jquanti-sse2-64.asm
- jquanti-sse2.asm
- jsimd.h
- jsimd_altivec.h
- jsimd_arm.c
- jsimd_arm64.c
- jsimd_arm64_neon.S
- jsimd_arm_neon.S
- jsimd_i386.c
- jsimd_mips.c
- jsimd_mips_dspr2.S
- jsimd_mips_dspr2_asm.h
- jsimd_powerpc.c
- jsimd_x86_64.c
- jsimdcfg.inc.h
- jsimdcpu.asm
- jsimdext.inc
- nasm_lt.sh
