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Optimize the cvCeil and cvFloor functions.

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This patch optimizes the cvCeil and cvFloor functions on
the LoongArch platform.

Signed-off-by: Hao Chen <chenhao@loongson.cn>
This commit is contained in:
Hao Chen 2022-04-20 14:13:02 +08:00 committed by Alexander Smorkalov
parent 46d988e2cb
commit fce8349c99
1 changed files with 43 additions and 3 deletions
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46
modules/core/include/opencv2/core/fast_math.hpp
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@ -128,8 +128,12 @@
#define CV_INLINE_ISNAN_FLT(value) CV_INLINE_ISNAN_DBL(value)
#endif
#if !defined(OPENCV_USE_FASTMATH_BUILTINS) && \
(defined __GNUC__ || defined __clang__ || defined _MSC_VER)
#if !defined(OPENCV_USE_FASTMATH_BUILTINS) \
&& ( \
defined(__x86_64__) || defined(__i686__) \
|| defined(__arm__) \
|| defined(__PPC64__) \
)
/* Let builtin C math functions when available. Dedicated hardware is available to
round and convert FP values. */
#define OPENCV_USE_FASTMATH_BUILTINS 1
@ -229,6 +233,15 @@ CV_INLINE int cvFloor( double value )
#if defined CV__FASTMATH_ENABLE_GCC_MATH_BUILTINS || \
defined CV__FASTMATH_ENABLE_CLANG_MATH_BUILTINS
return (int)__builtin_floor(value);
#elif defined __loongarch64
int i;
double tmp;
__asm__ ("ftintrm.l.d %[tmp], %[in] \n\t"
"movfr2gr.d %[i], %[tmp] \n\t"
: [i] "=r" (i), [tmp] "=f" (tmp)
: [in] "f" (value)
:);
return i;
#else
int i = (int)value;
return i - (i > value);
@ -247,6 +260,15 @@ CV_INLINE int cvCeil( double value )
#if defined CV__FASTMATH_ENABLE_GCC_MATH_BUILTINS || \
defined CV__FASTMATH_ENABLE_CLANG_MATH_BUILTINS
return (int)__builtin_ceil(value);
#elif defined __loongarch64
int i;
double tmp;
__asm__ ("ftintrp.l.d %[tmp], %[in] \n\t"
"movfr2gr.d %[i], %[tmp] \n\t"
: [i] "=r" (i), [tmp] "=f" (tmp)
: [in] "f" (value)
:);
return i;
#else
int i = (int)value;
return i + (i < value);
@ -281,7 +303,7 @@ CV_INLINE int cvIsInf( double value )
{
#if defined CV_INLINE_ISINF_DBL
CV_INLINE_ISINF_DBL(value);
#elif defined(__x86_64__) || defined(_M_X64) || defined(__aarch64__) || defined(_M_ARM64) || defined(__PPC64__)
#elif defined(__x86_64__) || defined(_M_X64) || defined(__aarch64__) || defined(_M_ARM64) || defined(__PPC64__) || defined(__loongarch64)
Cv64suf ieee754;
ieee754.f = value;
return (ieee754.u & 0x7fffffff00000000) ==
@ -332,6 +354,15 @@ CV_INLINE int cvFloor( float value )
#if defined CV__FASTMATH_ENABLE_GCC_MATH_BUILTINS || \
defined CV__FASTMATH_ENABLE_CLANG_MATH_BUILTINS
return (int)__builtin_floorf(value);
#elif defined __loongarch
int i;
float tmp;
__asm__ ("ftintrm.w.s %[tmp], %[in] \n\t"
"movfr2gr.s %[i], %[tmp] \n\t"
: [i] "=r" (i), [tmp] "=f" (tmp)
: [in] "f" (value)
:);
return i;
#else
int i = (int)value;
return i - (i > value);
@ -350,6 +381,15 @@ CV_INLINE int cvCeil( float value )
#if defined CV__FASTMATH_ENABLE_GCC_MATH_BUILTINS || \
defined CV__FASTMATH_ENABLE_CLANG_MATH_BUILTINS
return (int)__builtin_ceilf(value);
#elif defined __loongarch
int i;
float tmp;
__asm__ ("ftintrp.w.s %[tmp], %[in] \n\t"
"movfr2gr.s %[i], %[tmp] \n\t"
: [i] "=r" (i), [tmp] "=f" (tmp)
: [in] "f" (value)
:);
return i;
#else
int i = (int)value;
return i + (i < value);