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@implementation OFMatrix4x4
#if defined(OF_AMD64) || defined(OF_X86)
# ifndef __clang__
# pragma GCC push_options
# pragma GCC target("3dnow")
# endif
static void
multiplyWithMatrix_enhanced3DNow(OFMatrix4x4 *self, SEL _cmd,
OFMatrix4x4 *matrix)
{
float result[4][4];
for (uint_fast8_t i = 0; i < 4; i++) {
for (uint_fast8_t j = 0; j < 4; j++) {
__asm__ (
"movd (%2), %%mm0\n\t"
"punpckldq 16(%2), %%mm0\n\t"
"pfmul (%1), %%mm0\n\t"
"movd 32(%2), %%mm1\n\t"
"punpckldq 48(%2), %%mm1\n\t"
"pfmul 8(%1), %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"pswapd %%mm0, %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"movd %%mm0, %0"
:: "m"(result[i][j]), "r"(&matrix->_values[i][0]),
"r"(&self->_values[0][j])
: "mm0", "mm1", "memory"
);
}
}
__asm__ ("femms");
memcpy(self->_values, result, sizeof(result));
}
static void
multiplyWithMatrix_3DNow(OFMatrix4x4 *self, SEL _cmd, OFMatrix4x4 *matrix)
{
float result[4][4];
for (uint_fast8_t i = 0; i < 4; i++) {
for (uint_fast8_t j = 0; j < 4; j++) {
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}
}
__asm__ ("femms");
memcpy(self->_values, result, sizeof(result));
}
static OFVector4D
transformedVector_enhanced3DNow(OFMatrix4x4 *self, SEL _cmd, OFVector4D vector)
{
OFVector4D result;
__asm__ (
"movq (%2), %%mm0\n\t"
"movq 8(%2), %%mm1\n"
"\n\t"
"movq %%mm0, %%mm2\n\t"
"movq %%mm1, %%mm3\n\t"
"pfmul (%1), %%mm2\n\t"
"pfmul 8(%1), %%mm3\n\t"
"pfadd %%mm3, %%mm2\n\t"
"pswapd %%mm2, %%mm3\n\t"
"pfadd %%mm3, %%mm2\n"
"\n\t"
"movq %%mm0, %%mm3\n\t"
"movq %%mm1, %%mm4\n\t"
"pfmul 16(%1), %%mm3\n\t"
"pfmul 24(%1), %%mm4\n\t"
"pfadd %%mm4, %%mm3\n\t"
"pswapd %%mm3, %%mm4\n\t"
"pfadd %%mm4, %%mm3\n"
"\n\t"
"punpckldq %%mm3, %%mm2\n\t"
"movq %%mm2, (%0)\n"
"\n\t"
"movq %%mm0, %%mm2\n\t"
"movq %%mm1, %%mm3\n\t"
"pfmul 32(%1), %%mm2\n\t"
"pfmul 40(%1), %%mm3\n\t"
"pfadd %%mm3, %%mm2\n\t"
"pswapd %%mm2, %%mm3\n\t"
"pfadd %%mm3, %%mm2\n"
"\n\t"
"pfmul 48(%1), %%mm0\n\t"
"pfmul 56(%1), %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"pswapd %%mm0, %%mm1\n\t"
"pfadd %%mm1, %%mm0\n"
"\n\t"
"punpckldq %%mm0, %%mm2\n\t"
"movq %%mm2, 8(%0)\n"
"\n\t"
"femms"
:: "r"(&result), "r"(&self->_values), "r"(&vector)
: "mm0", "mm1", "mm2", "mm3", "mm4", "memory"
);
return result;
}
static OFVector4D
transformedVector_3DNow(OFMatrix4x4 *self, SEL _cmd, OFVector4D vector)
{
OFVector4D result;
__asm__ (
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}
# ifndef __clang__
# pragma GCC pop_options
# endif
+ (void)initialize
{
const char *typeEncoding;
if (self != [OFMatrix4x4 class])
return;
if ([OFSystemInfo supports3DNow]) {
SEL selector;
const char *typeEncoding;
selector = @selector(multiplyWithMatrix:);
typeEncoding = method_getTypeEncoding(
class_getInstanceMethod(self, selector));
class_replaceMethod(self, selector,
(IMP)multiplyWithMatrix_3DNow, typeEncoding);
selector = @selector(transformedVector:);
REPLACE(@selector(transformedVector:),
typeEncoding = method_getTypeEncoding(
class_getInstanceMethod(self, selector));
class_replaceMethod(self, selector,
(IMP)transformedVector_3DNow, typeEncoding);
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