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Added build support for MIPS MSA

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Also added one msa optimized function: png_read_filter_row_up_msa

Signed-off-by: Mandar Sahastrabuddhe <Mandar.Sahastrabuddhe@imgtec.com>
This commit is contained in:
Mandar Sahastrabuddhe
2016-08-29 19:07:25 +05:30
parent 143434ac78
commit ee5e39835c
8 changed files with 544 additions and 7 deletions
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49
configure.ac
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@@ -1,7 +1,7 @@
# configure.ac
# Copyright (c) 2004-2015 Glenn Randers-Pehrson
# Last changed in libpng 1.6.22 [May 26, 2016]
# Copyright (c) 2004-2016 Glenn Randers-Pehrson
# Last changed in libpng 1.6.25beta03 [August 29, 2016]
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
@@ -346,6 +346,51 @@ AM_CONDITIONAL([PNG_ARM_NEON],
*) test "$enable_arm_neon" != '';;
esac])
# MIPS
# ===
#
# MIPS MSA (SIMD) support.
AC_ARG_ENABLE([mips-msa],
AS_HELP_STRING([[[--enable-mips-msa]]],
[Enable MIPS MSA optimizations: =no/off, check, api, yes/on:]
[no/off: disable the optimizations; check: use internal checking code]
[(deprecated and poorly supported); api: disable by default, enable by]
[a call to png_set_option; yes/on: turn on unconditionally.]
[If not specified: determined by the compiler.]),
[case "$enableval" in
no|off)
# disable the default enabling on __mips_msa systems:
AC_DEFINE([PNG_MIPS_MSA_OPT], [0],
[Disable MIPS MSA optimizations])
# Prevent inclusion of the assembler files below:
enable_mips_msa=no;;
check)
AC_DEFINE([PNG_MIPS_MSA_CHECK_SUPPORTED], [],
[Check for MIPS MSA support at run-time]);;
api)
AC_DEFINE([PNG_MIPS_MSA_API_SUPPORTED], [],
[Turn on MIPS MSA optimizations at run-time]);;
yes|on)
AC_DEFINE([PNG_MIPS_MSA_OPT], [2],
[Enable MIPS MSA optimizations])
AC_MSG_WARN([--enable-mips-msa: please specify 'check' or 'api', if]
[you want the optimizations unconditionally pass '-mmsa -mfp64']
[to the compiler.]);;
*)
AC_MSG_ERROR([--enable-mips-msa=${enable_mips_msa}: invalid value])
esac])
# Add MIPS specific files to all builds where the host_cpu is mips ('mips*') or
# where MIPS optimizations were explicitly requested (this allows a fallback if a
# future host CPU does not match 'mips*')
AM_CONDITIONAL([PNG_MIPS_MSA],
[test "$enable_mips_msa" != 'no' &&
case "$host_cpu" in
mipsel*|mips64el*) :;;
esac])
AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]])
# Config files, substituting as above