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dsp.h: enable NEON w/VS2019+ ARM64 targets

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Visual Studio added ARM64 support, but requires arm64_neon.h to be
included rather than arm_neon.h. Visual Studio 2019 addressed this so
we'll start with that version and leave a local adapter include for a
follow up.

Bug: webp:539
Change-Id: If975c029dafffba99210b3bb2d670035a83e8105
This commit is contained in:
James Zern 2021-09-13 17:44:38 -07:00
parent 3875c7de07
commit e23cd5481c
1 changed files with 6 additions and 1 deletions
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7
src/dsp/dsp.h
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@ -119,7 +119,12 @@ extern "C" {
#define WEBP_USE_NEON
#endif
#if defined(_MSC_VER) && _MSC_VER >= 1700 && defined(_M_ARM)
// Note: ARM64 is supported in Visual Studio 2017, but requires the direct
// inclusion of arm64_neon.h; Visual Studio 2019 includes this file in
// arm_neon.h.
#if defined(_MSC_VER) && \
((_MSC_VER >= 1700 && defined(_M_ARM)) || \
(_MSC_VER >= 1920 && defined(_M_ARM64)))
#define WEBP_USE_NEON
#define WEBP_USE_INTRINSICS
#endif