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Merge "dsp: msvc compatibility"

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James Zern 2013-08-19 17:42:16 -07:00 committed by Gerrit Code Review
commit 4c7322c86f
2 changed files with 4 additions and 2 deletions
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3
src/dsp/dsp.h
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@ -23,7 +23,8 @@ extern "C" {
//------------------------------------------------------------------------------
// CPU detection
#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
#if defined(_MSC_VER) && _MSC_VER > 1310 && \
(defined(_M_X64) || defined(_M_IX86))
#define WEBP_MSC_SSE2 // Visual C++ SSE2 targets
#endif

3
src/dsp/lossless.h
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@ -108,7 +108,8 @@ static WEBP_INLINE float VP8LFastSLog2(int v) {
static WEBP_INLINE int BitsLog2Floor(uint32_t n) {
return 31 ^ __builtin_clz(n);
}
#elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
#elif defined(_MSC_VER) && _MSC_VER > 1310 && \
(defined(_M_X64) || defined(_M_IX86))
#include <intrin.h>
#pragma intrinsic(_BitScanReverse)