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Diffstat (limited to 'Build/source/libs/libpng/libpng-src/intel/filter_sse2_intrinsics.c')
-rw-r--r--Build/source/libs/libpng/libpng-src/intel/filter_sse2_intrinsics.c37
1 files changed, 11 insertions, 26 deletions
diff --git a/Build/source/libs/libpng/libpng-src/intel/filter_sse2_intrinsics.c b/Build/source/libs/libpng/libpng-src/intel/filter_sse2_intrinsics.c
index ef1fc7d6b8d..f52aaa800a4 100644
--- a/Build/source/libs/libpng/libpng-src/intel/filter_sse2_intrinsics.c
+++ b/Build/source/libs/libpng/libpng-src/intel/filter_sse2_intrinsics.c
@@ -1,12 +1,11 @@
/* filter_sse2_intrinsics.c - SSE2 optimized filter functions
*
+ * Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2016-2017 Glenn Randers-Pehrson
* Written by Mike Klein and Matt Sarett
* Derived from arm/filter_neon_intrinsics.c
*
- * Last changed in libpng 1.6.31 [July 27, 2017]
- *
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
* and license in png.h
@@ -29,39 +28,25 @@
*/
static __m128i load4(const void* p) {
- return _mm_cvtsi32_si128(*(const int*)p);
+ int tmp;
+ memcpy(&tmp, p, sizeof(tmp));
+ return _mm_cvtsi32_si128(tmp);
}
static void store4(void* p, __m128i v) {
- *(int*)p = _mm_cvtsi128_si32(v);
+ int tmp = _mm_cvtsi128_si32(v);
+ memcpy(p, &tmp, sizeof(int));
}
static __m128i load3(const void* p) {
- /* We'll load 2 bytes, then 1 byte,
- * then mask them together, and finally load into SSE.
- */
- const png_uint_16* p01 = (png_const_uint_16p)p;
- const png_byte* p2 = (const png_byte*)(p01+1);
-
- png_uint_32 v012 = (png_uint_32)(*p01)
- | (png_uint_32)(*p2) << 16;
- return load4(&v012);
+ png_uint_32 tmp = 0;
+ memcpy(&tmp, p, 3);
+ return _mm_cvtsi32_si128(tmp);
}
static void store3(void* p, __m128i v) {
- /* We'll pull from SSE as a 32-bit int, then write
- * its bottom two bytes, then its third byte.
- */
- png_uint_32 v012;
- png_uint_16* p01;
- png_byte* p2;
-
- store4(&v012, v);
-
- p01 = (png_uint_16p)p;
- p2 = (png_byte*)(p01+1);
- *p01 = (png_uint_16)v012;
- *p2 = (png_byte)(v012 >> 16);
+ int tmp = _mm_cvtsi128_si32(v);
+ memcpy(p, &tmp, 3);
}
void png_read_filter_row_sub3_sse2(png_row_infop row_info, png_bytep row,