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Prefer SSE and ASM implementation of float2int before lrintf for MSVC

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Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
This commit is contained in:
Marcus Asteborg 2020-06-13 22:11:21 -07:00 • committed by Jean-Marc Valin
parent da40455656
commit 12c751e05c
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GPG key ID: 5E5DD9A36F9189C8
1 changed files with 32 additions and 26 deletions

58
celt/float_cast.h
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@ -67,6 +67,38 @@
#include <xmmintrin.h>
static OPUS_INLINE opus_int32 float2int(float x) {return _mm_cvt_ss2si(_mm_set_ss(x));}
#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && (defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 1))
#include <xmmintrin.h>
static OPUS_INLINE opus_int32 float2int(float value)
{
/* _mm_load_ss will generate same code as _mm_set_ss
** in _MSC_VER >= 1914 /02 so keep __mm_load__ss
** for backward compatibility.
*/
return _mm_cvtss_si32(_mm_load_ss(&value));
}
#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && defined (_M_IX86)
#include <math.h>
/* Win32 doesn't seem to have these functions.
** Therefore implement OPUS_INLINE versions of these functions here.
*/
static OPUS_INLINE opus_int32
float2int (float flt)
{ int intgr;
_asm
{ fld flt
fistp intgr
} ;
return intgr ;
}
#elif defined(HAVE_LRINTF)
/* These defines enable functionality introduced with the 1999 ISO C
@ -96,32 +128,6 @@ static OPUS_INLINE opus_int32 float2int(float x) {return _mm_cvt_ss2si(_mm_set_s
#include <math.h>
#define float2int(x) lrint(x)
#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && (defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 1))
#include <xmmintrin.h>
static __inline long int float2int(float value)
{
return _mm_cvtss_si32(_mm_load_ss(&value));
}
#elif (defined(_MSC_VER) && _MSC_VER >= 1400) && defined (_M_IX86)
#include <math.h>
/* Win32 doesn't seem to have these functions.
** Therefore implement OPUS_INLINE versions of these functions here.
*/
static __inline long int
float2int (float flt)
{ int intgr;
_asm
{ fld flt
fistp intgr
} ;
return intgr ;
}
#else
#if (defined(__GNUC__) && defined(__STDC__) && __STDC__ && __STDC_VERSION__ >= 199901L)