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dsp.h: bump msvc arm64 version requirement to 16.6

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there was a bug in 16.4 causing compile failures with vtbl4_u8():

src\dsp\lossless_neon.c(105): error C2143: syntax error: missing ')'
before '{'
src\dsp\lossless_neon.c(105): error C2168: 'neon_tbl2_q8': too few
actual parameters for intrinsic function

https://developercommunity.visualstudio.com/t/cannot-compile-arm64-neon-vtbl4-u8-function-in-c-f/859331

Change-Id: I87c21850b3c597aa5cb41a8105b81e2135a9f890
This commit is contained in:
James Zern 2022-01-19 21:49:59 -08:00
parent db25f1b4ed
commit 4074acf873
1 changed files with 3 additions and 2 deletions
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5
src/dsp/dsp.h
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@ -121,10 +121,11 @@ extern "C" {
// 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.
// arm_neon.h. Compile errors were seen with Visual Studio 2019 16.4 with
// vtbl4_u8(); a fix was made in 16.6.
#if defined(_MSC_VER) && \
((_MSC_VER >= 1700 && defined(_M_ARM)) || \
(_MSC_VER >= 1920 && defined(_M_ARM64)))
(_MSC_VER >= 1926 && defined(_M_ARM64)))
#define WEBP_USE_NEON
#define WEBP_USE_INTRINSICS
#endif