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[libpng16] Changed NEON implementation selection mechanism to allow assembler

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or intrinsics to be turned on during the build by defining
PNG_ARM_NEON_IMPLEMENTATION to the correct value (2 or 1).  The
default is "undefined" and the build type is selected in pngpriv.h.
This commit is contained in:
John Bowler
2013-10-25 16:11:57 -05:00
committed by Glenn Randers-Pehrson
parent bb9adfdad9
commit fd8bba4b80
5 changed files with 53 additions and 32 deletions
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8
ANNOUNCE
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@@ -1,5 +1,5 @@
Libpng 1.6.7beta04 - October 24, 2013
Libpng 1.6.7beta04 - October 25, 2013
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@@ -80,11 +80,15 @@ Version 1.6.7beta03 [October 19, 2013]
Cleaned up ARM NEON compilation handling. The tests are now in pngpriv.h
and detect the broken GCC compilers.
Version 1.6.7beta04 [October 24, 2013]
Version 1.6.7beta04 [October 25, 2013]
Allow clang derived from older GCC versions to use ARM intrinsics. This
causes all clang builds that use -mfpu=neon to use the intrinsics code,
not the assembler code. This has only been tested on iOS 7. It may be
necessary to exclude some earlier clang versions but this seems unlikely.
Changed NEON implementation selection mechanism. This allows assembler
or intrinsics to be turned on during the build by defining
PNG_ARM_NEON_IMPLEMENTATION to the correct value (2 or 1). The
default is "undefined" and the build type is selected in pngpriv.h.
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