ObjFW  Check-in [055e14fc75]

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Comment:Work around Clang not aligning ivars correctly
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SHA3-256: 055e14fc75b603d54098c112fa727a5825a705b096b41d258a25cc117944dd2e
User & Date: js on 2023-11-04 13:06:52
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Context
2023-11-04
13:10
OFMatrix4x4: Restore SSE4.1 code check-in: 0eb97e4612 user: js tags: trunk
13:06
Work around Clang not aligning ivars correctly check-in: 055e14fc75 user: js tags: trunk
2023-11-03
01:07
OFMatrix4x4: Remove SSE4.1 due to Clang bugs check-in: 7e1dbda4b4 user: js tags: trunk
Changes
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Modified src/OFMatrix4x4.h from [12afeb3f7a] to [ecc8ac5d95].

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/**
 * @brief A 4x4 matrix of floats.
 */
OF_SUBCLASSING_RESTRICTED
@interface OFMatrix4x4: OFObject <OFCopying>
{
	float _values[4][4] OF_ALIGN(16);
}

#ifdef OF_HAVE_CLASS_PROPERTIES
@property (readonly, class) OFMatrix4x4 *identityMatrix;
#endif

/**








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/**
 * @brief A 4x4 matrix of floats.
 */
OF_SUBCLASSING_RESTRICTED
@interface OFMatrix4x4: OFObject <OFCopying>
{
	float (*_values)[4];
}

#ifdef OF_HAVE_CLASS_PROPERTIES
@property (readonly, class) OFMatrix4x4 *identityMatrix;
#endif

/**
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Modified src/OFMatrix4x4.m from [740fcdd16f] to [1cf8596c69].

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#  pragma GCC push_options
#  pragma GCC target("3dnow,3dnowa")
# endif
static void
multiplyWithMatrix_enhanced3DNow(OFMatrix4x4 *self, SEL _cmd,
    OFMatrix4x4 *matrix)
{
	float *left = &matrix->_values[0][0], *right = &self->_values[0][0];
	float result[4][4], *resultPtr = &result[0][0];

	__asm__ __volatile__ (
	    "xorw	%%cx, %%cx\n"
	    "\n\t"
	    "0:\n\t"
	    "movd	(%2), %%mm0\n\t"
	    "punpckldq	16(%2), %%mm0\n\t"








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#  pragma GCC push_options
#  pragma GCC target("3dnow,3dnowa")
# endif
static void
multiplyWithMatrix_enhanced3DNow(OFMatrix4x4 *self, SEL _cmd,
    OFMatrix4x4 *matrix)
{
	float (*left)[4] = matrix->_values, (*right)[4] = self->_values;
	float result[4][4], (*resultPtr)[4] = result;

	__asm__ __volatile__ (
	    "xorw	%%cx, %%cx\n"
	    "\n\t"
	    "0:\n\t"
	    "movd	(%2), %%mm0\n\t"
	    "punpckldq	16(%2), %%mm0\n\t"
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	    "jb		0b\n"
	    "\n\t"
	    "femms"
	    : "+r"(resultPtr), "+r"(left), "+r"(right)
	    :: "cx", "mm0", "mm1", "memory"
	);

	memcpy(self->_values, result, sizeof(result));
}

static void
transformVectors_enhanced3DNow(OFMatrix4x4 *self, SEL _cmd, OFVector4D *vectors,
    size_t count)
{
	__asm__ __volatile__ (








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	    "jb		0b\n"
	    "\n\t"
	    "femms"
	    : "+r"(resultPtr), "+r"(left), "+r"(right)
	    :: "cx", "mm0", "mm1", "memory"
	);

	memcpy(self->_values, result, 16 * sizeof(float));
}

static void
transformVectors_enhanced3DNow(OFMatrix4x4 *self, SEL _cmd, OFVector4D *vectors,
    size_t count)
{
	__asm__ __volatile__ (
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	    "add	$16, %1\n\t"
	    "dec	%0\n\t"
	    "jnz	0b\n"
	    "\n\t"
	    "0:\n\t"
	    "femms"
	    : "+r"(count), "+r"(vectors)
	    : "r"(&self->_values)
	    : "mm0", "mm1", "mm2", "mm3", "mm4", "memory"
	);
}
# ifndef __clang__
#  pragma GCC pop_options
# endif

# ifndef __clang__
#  pragma GCC push_options
#  pragma GCC target("3dnow")
# endif
static void
multiplyWithMatrix_3DNow(OFMatrix4x4 *self, SEL _cmd, OFMatrix4x4 *matrix)
{
	float *left = &matrix->_values[0][0], *right = &self->_values[0][0];
	float result[4][4], *resultPtr = &result[0][0];

	__asm__ __volatile__ (
	    "xorw	%%cx, %%cx\n"
	    "\n\t"
	    "0:\n\t"
	    "movd	(%2), %%mm0\n\t"
	    "punpckldq	16(%2), %%mm0\n\t"








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	    "add	$16, %1\n\t"
	    "dec	%0\n\t"
	    "jnz	0b\n"
	    "\n\t"
	    "0:\n\t"
	    "femms"
	    : "+r"(count), "+r"(vectors)
	    : "r"(self->_values)
	    : "mm0", "mm1", "mm2", "mm3", "mm4", "memory"
	);
}
# ifndef __clang__
#  pragma GCC pop_options
# endif

# ifndef __clang__
#  pragma GCC push_options
#  pragma GCC target("3dnow")
# endif
static void
multiplyWithMatrix_3DNow(OFMatrix4x4 *self, SEL _cmd, OFMatrix4x4 *matrix)
{
	float (*left)[4] = matrix->_values, (*right)[4] = self->_values;
	float result[4][4], (*resultPtr)[4] = result;

	__asm__ __volatile__ (
	    "xorw	%%cx, %%cx\n"
	    "\n\t"
	    "0:\n\t"
	    "movd	(%2), %%mm0\n\t"
	    "punpckldq	16(%2), %%mm0\n\t"
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	    "jb		0b\n"
	    "\n\t"
	    "femms"
	    : "+r"(resultPtr), "+r"(left), "+r"(right)
	    :: "cx", "mm0", "mm1", "memory"
	);

	memcpy(self->_values, result, sizeof(result));
}

static void
transformVectors_3DNow(OFMatrix4x4 *self, SEL _cmd, OFVector4D *vectors,
    size_t count)
{
	__asm__ __volatile__ (








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	    "jb		0b\n"
	    "\n\t"
	    "femms"
	    : "+r"(resultPtr), "+r"(left), "+r"(right)
	    :: "cx", "mm0", "mm1", "memory"
	);

	memcpy(self->_values, result, 16 * sizeof(float));
}

static void
transformVectors_3DNow(OFMatrix4x4 *self, SEL _cmd, OFVector4D *vectors,
    size_t count)
{
	__asm__ __volatile__ (
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	    "add	$16, %1\n\t"
	    "dec	%0\n\t"
	    "jnz	0b\n"
	    "\n\t"
	    "0:\n\t"
	    "femms"
	    : "+r"(count), "+r"(vectors)
	    : "r"(&self->_values)
	    : "mm0", "mm1", "mm2", "mm3", "mm4", "memory"
	);
}
# ifndef __clang__
#  pragma GCC pop_options
# endif









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	    "add	$16, %1\n\t"
	    "dec	%0\n\t"
	    "jnz	0b\n"
	    "\n\t"
	    "0:\n\t"
	    "femms"
	    : "+r"(count), "+r"(vectors)
	    : "r"(self->_values)
	    : "mm0", "mm1", "mm2", "mm3", "mm4", "memory"
	);
}
# ifndef __clang__
#  pragma GCC pop_options
# endif
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			    transformVectors_3DNow)
		}
	}

# undef REPLACE
}
#endif













+ (OFMatrix4x4 *)identityMatrix
{
	return [[[OFMatrix4x4 alloc]
	    initWithValues: identityValues] autorelease];
}









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			    transformVectors_3DNow)
		}
	}

# undef REPLACE
}
#endif

+ (instancetype)alloc
{
	OFMatrix4x4 *instance;
	float (*values)[4];

	instance = OFAllocObject(self, 16 * sizeof(float), 16,
	    (void **)&values);
	instance->_values = values;

	return instance;
}

+ (OFMatrix4x4 *)identityMatrix
{
	return [[[OFMatrix4x4 alloc]
	    initWithValues: identityValues] autorelease];
}
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	OF_INVALID_INIT_METHOD
}

- (instancetype)initWithValues: (const float [4][4])values
{
	self = [super init];

	memcpy(_values, values, sizeof(_values));

	return self;
}

- (float (*)[4])values
{
	return _values;
}

- (instancetype)copy
{
	return [[OFMatrix4x4 alloc]
	    initWithValues: (const float (*)[4])_values];
}

- (bool)isEqual: (OFMatrix4x4 *)matrix
{
	if (![matrix isKindOfClass: [OFMatrix4x4 class]])
		return false;

	return (memcmp(_values, matrix->_values, sizeof(_values)) == 0);
}

- (unsigned long)hash
{
	unsigned long hash;

	OFHashInit(&hash);








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	OF_INVALID_INIT_METHOD
}

- (instancetype)initWithValues: (const float [4][4])values
{
	self = [super init];

	memcpy(_values, values, 16 * sizeof(float));

	return self;
}

- (float (*)[4])values
{
	return _values;
}

- (instancetype)copy
{
	return [[OFMatrix4x4 alloc] initWithValues: _values];

}

- (bool)isEqual: (OFMatrix4x4 *)matrix
{
	if (![matrix isKindOfClass: [OFMatrix4x4 class]])
		return false;

	return (memcmp(_values, matrix->_values, 16 * sizeof(float)) == 0);
}

- (unsigned long)hash
{
	unsigned long hash;

	OFHashInit(&hash);
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		for (uint_fast8_t j = 0; j < 4; j++)
			result[i][j] =
			    matrix->_values[i][0] * _values[0][j] +
			    matrix->_values[i][1] * _values[1][j] +
			    matrix->_values[i][2] * _values[2][j] +
			    matrix->_values[i][3] * _values[3][j];

	memcpy(_values, result, sizeof(result));
}

- (void)translateWithVector: (OFVector3D)vector
{
	OFMatrix4x4 *translation = [[OFMatrix4x4 alloc] initWithValues:
	    (const float [4][4]){
		{ 1, 0, 0, vector.x },








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		for (uint_fast8_t j = 0; j < 4; j++)
			result[i][j] =
			    matrix->_values[i][0] * _values[0][j] +
			    matrix->_values[i][1] * _values[1][j] +
			    matrix->_values[i][2] * _values[2][j] +
			    matrix->_values[i][3] * _values[3][j];

	memcpy(_values, result, 16 * sizeof(float));
}

- (void)translateWithVector: (OFVector3D)vector
{
	OFMatrix4x4 *translation = [[OFMatrix4x4 alloc] initWithValues:
	    (const float [4][4]){
		{ 1, 0, 0, vector.x },
︙︙

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