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Optimize png_do_expand_palette for ARM

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ARM-specific optimization processes 8 or 4 pixels at once.
Improves performance by around 10-22% on a recent ARM Chromebook.
This commit is contained in:
Richard Townsend
2018-01-25 19:03:04 +00:00
committed by Cosmin Truta
parent 2fc5ddff18
commit 7734cda20c
7 changed files with 213 additions and 10 deletions
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3
Makefile.am
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@@ -95,7 +95,8 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
if PNG_ARM_NEON
libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/arm_init.c\
arm/filter_neon.S arm/filter_neon_intrinsics.c
arm/filter_neon.S arm/filter_neon_intrinsics.c \
arm/palette_neon_intrinsics.c
endif
if PNG_MIPS_MSA