diff options
Diffstat (limited to 'thirdparty/jpeg-compressor/patches/fix-msvc-sse2-detection.patch')
| -rw-r--r-- | thirdparty/jpeg-compressor/patches/fix-msvc-sse2-detection.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/thirdparty/jpeg-compressor/patches/fix-msvc-sse2-detection.patch b/thirdparty/jpeg-compressor/patches/fix-msvc-sse2-detection.patch new file mode 100644 index 0000000000..830b03b0c0 --- /dev/null +++ b/thirdparty/jpeg-compressor/patches/fix-msvc-sse2-detection.patch @@ -0,0 +1,44 @@ +From ae74fa2fcdef8ec44b925a649f66e8cbefce8315 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= <rverschelde@gmail.com> +Date: Thu, 7 May 2020 12:14:09 +0200 +Subject: [PATCH] Fix detection of SSE2 with Visual Studio + +The previous code assumed that SSE2 is available when building with +Visual Studio, but that's not accurate on ARM with UWP. + +SSE2 could also be enabled on x86 if `_M_IX86_FP == 2`, but it requires +checking first that it's not actually set to 2 for AVX, AVX2 or AVX512 +(see https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=vs-2019), +so I left it out for this quick fix. +--- + jpgd.cpp | 16 +++++++--------- + 1 file changed, 7 insertions(+), 9 deletions(-) + +diff --git a/jpgd.cpp b/jpgd.cpp +index 91e66ad..db1f3b4 100644 +--- a/jpgd.cpp ++++ b/jpgd.cpp +@@ -37,16 +37,14 @@ + + #ifndef JPGD_USE_SSE2 + +- #if defined(__GNUC__) +- +- #if (defined(__x86_64__) || defined(_M_X64)) +- #if defined(__SSE2__) +- #define JPGD_USE_SSE2 (1) +- #endif ++ #if defined(__GNUC__) ++ #if defined(__SSE2__) ++ #define JPGD_USE_SSE2 (1) ++ #endif ++ #elif defined(_MSC_VER) ++ #if defined(_M_X64) ++ #define JPGD_USE_SSE2 (1) + #endif +- +- #else +- #define JPGD_USE_SSE2 (1) + #endif + + #endif |