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add WebPMemToInt32

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and use it with calls to _mm_cvtsi32_si128 and _mm_set_epi32; this calls
WebPMemToUint32, but corrects the type to avoid runtime warnings with
clang -fsanitize=integer of the form:

implicit conversion from type 'uint32_t' (aka 'unsigned int') of value
2155905152 (32-bit, unsigned) to type 'int' changed the value to
-2139062144 (32-bit, signed)

Bug: b/229626362
Change-Id: I50101ba2b46dfaa852f02d46830f3511c80b02d9
This commit is contained in:
James Zern
2022-07-28 19:33:44 -07:00
parent b4994eaa6d
commit 4f402f34a1
5 changed files with 25 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/dsp/enc_sse2.c
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@ -156,10 +156,10 @@ static void ITransform_SSE2(const uint8_t* ref, const int16_t* in, uint8_t* dst,
ref3 = _mm_loadl_epi64((const __m128i*)&ref[3 * BPS]);
} else {
// Load four bytes/pixels per line.
ref0 = _mm_cvtsi32_si128(WebPMemToUint32(&ref[0 * BPS]));
ref1 = _mm_cvtsi32_si128(WebPMemToUint32(&ref[1 * BPS]));
ref2 = _mm_cvtsi32_si128(WebPMemToUint32(&ref[2 * BPS]));
ref3 = _mm_cvtsi32_si128(WebPMemToUint32(&ref[3 * BPS]));
ref0 = _mm_cvtsi32_si128(WebPMemToInt32(&ref[0 * BPS]));
ref1 = _mm_cvtsi32_si128(WebPMemToInt32(&ref[1 * BPS]));
ref2 = _mm_cvtsi32_si128(WebPMemToInt32(&ref[2 * BPS]));
ref3 = _mm_cvtsi32_si128(WebPMemToInt32(&ref[3 * BPS]));
}
// Convert to 16b.
ref0 = _mm_unpacklo_epi8(ref0, zero);
@ -875,7 +875,7 @@ static WEBP_INLINE void HD4_SSE2(uint8_t* dst, const uint8_t* top) {
static WEBP_INLINE void TM4_SSE2(uint8_t* dst, const uint8_t* top) {
const __m128i zero = _mm_setzero_si128();
const __m128i top_values = _mm_cvtsi32_si128(WebPMemToUint32(top));
const __m128i top_values = _mm_cvtsi32_si128(WebPMemToInt32(top));
const __m128i top_base = _mm_unpacklo_epi8(top_values, zero);
int y;
for (y = 0; y < 4; ++y, dst += BPS) {