3rdparty/ext_heif/0001-Quick-check-for-SSE-support.patch

0001 From 92e4e078782bdb2a375631a1c7b28cbaec31cac6 Mon Sep 17 00:00:00 2001
0002 From: "L. E. Segovia" <amy@amyspark.me>
0003 Date: Wed, 17 Feb 2021 17:33:52 +0000
0004 Subject: [PATCH] Quick check for SSE support
0005
0006 ---
0007  libde265/CMakeLists.txt | 17 +++++++++++++++++
0008  1 file changed, 17 insertions(+)
0009
0010 diff --git a/libde265/CMakeLists.txt b/libde265/CMakeLists.txt
0011 index 749c7fb..13aec57 100644
0012 --- a/libde265/CMakeLists.txt
0013 +++ b/libde265/CMakeLists.txt
0014 @@ -88,6 +88,25 @@ add_definitions(-DLIBDE265_EXPORTS)
0015
0016  add_subdirectory (encoder)
0017
0018 +include(CheckCXXSourceCompiles)
0019 +check_cxx_source_compiles ("
0020 +    #include <immintrin.h>
0021 +    int main ()
0022 +    {
0023 +        __m128d a, b;
0024 +        double vals[2] = {0};
0025 +        a = _mm_loadu_pd (vals);
0026 +        b = _mm_add_pd (a,a);
0027 +        _mm_storeu_pd (vals,b);
0028 +        return (0);
0029 +    }"
0030 +    HAVE_SSE2)
0031 +
0032 +if (NOT HAVE_SSE2)
0033 +    message(STATUS "Disabling SSE optimizations, as the target doesn't support them")
0034 +    set(DISABLE_SSE TRUE)
0035 +endif()
0036 +
0037  if(NOT DISABLE_SSE)
0038    if (MSVC)
0039      set(SUPPORTS_SSE2 1)
0040 --
0041 2.29.2.windows.1
0042