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| 0.00 │ nop ▒ | |
| │ /* Perform the respective operation on the four SPFP values in A and B. */ ▒ | |
| │ ▒ | |
| │ extern __inline __m128 __attribute__((__gnu_inline__, __always_inline__, __artificial__)) ▒ | |
| │ _mm_add_ps (__m128 __A, __m128 __B) ▒ | |
| │ { ▒ | |
| │ return (__m128) __builtin_ia32_addps ((__v4sf)__A, (__v4sf)__B); ▒ | |
| 2.54 │ 80:┌─→vaddps (%rdx),%xmm3,%xmm0 ▒ | |
| │ │ __m128 force_y = _mm_set_ps(y, y, y, y); ▒ | |
| │ │ ▒ | |
| │ │ int const prefetch_count = power_of_two_below(CACHE_LINE_SIZE / sizeof(particles[0])); ▒ | |
| │ │ __m128 tmp_x; ▒ | |
| │ │ __m128 tmp_y; ▒ | |
| │ │ for(int i = 0; i < GROUP_COUNT; ++i){ ▒ | |
| 38.43 │ │ add $0x1,%ecx ▒ | |
| 2.01 │ │ add $0x60,%rdx ▒ | |
| │ │ // _mm_prefetch(particles + i + prefetch_count, _MM_HINT_T0); ▒ | |
| │ │ } ▒ | |
| │ │ tmp_x = particles[i].force_x; ▒ | |
| │ │ tmp_y = particles[i].force_y; ▒ | |
| │ │ ▒ | |
| │ │ particles[i].force_x = _mm_add_ps(tmp_x, force_x); ▒ | |
| 0.00 │ │ vmovap %xmm0,-0x60(%rdx) ▒ | |
| 4.02 │ │ vaddps -0x50(%rdx),%xmm2,%xmm0 ▒ | |
| │ │ particles[i].force_y = _mm_add_ps(tmp_y, force_y); ▒ | |
| 3.62 │ │ vmovap %xmm0,-0x50(%rdx) ◆ | |
| │ │ __m128 force_y = _mm_set_ps(y, y, y, y); ▒ | |
| │ │ ▒ | |
| │ │ int const prefetch_count = power_of_two_below(CACHE_LINE_SIZE / sizeof(particles[0])); ▒ | |
| │ │ __m128 tmp_x; ▒ | |
| │ │ __m128 tmp_y; ▒ | |
| │ │ for(int i = 0; i < GROUP_COUNT; ++i){ ▒ | |
| 3.56 │ │ cmp $0x61a8,%ecx ▒ | |
| │ └──jne 80 ▒ | |
| │ mov %rsi,%rdx ▒ | |
| │ mov $0x30d4,%cx ▒ | |
| │ nop ▒ | |
| │ for (i = 0; i < total; i = i + 2){ ▒ | |
| │ // _mm_prefetch(particles + i , _MM_HINT_T0); ▒ | |
| │ pos_x = particles[i].pos_x; ▒ | |
| │ pos_y = particles[i].pos_y; ▒ | |
| │ vel_x = particles[i].vel_x * particles[i].force_x; ▒ | |
| │ vel_y = particles[i].vel_y * particles[i].force_y; ▒ | |
| 0.20 │ b0: vmovap 0x50(%rdx),%xmm0 ▒ | |
| 9.40 │ add $0xc0,%rdx ▒ | |
| │ ▒ | |
| │ for (i = 0; i < total; i = i + 2){ ▒ | |
| │ // _mm_prefetch(particles + i , _MM_HINT_T0); ▒ | |
| │ pos_x = particles[i].pos_x; ▒ | |
| │ pos_y = particles[i].pos_y; ▒ | |
| │ vel_x = particles[i].vel_x * particles[i].force_x; ▒ | |
| 0.64 │ vmovap -0x80(%rdx),%xmm1 ▒ | |
| │ vel_y = particles[i].vel_y * particles[i].force_y; ▒ | |
| 2.55 │ vmulps -0x90(%rdx),%xmm0,%xmm0 ▒ | |
| │ ▒ | |
| │ for (i = 0; i < total; i = i + 2){ ▒ | |
| │ // _mm_prefetch(particles + i , _MM_HINT_T0); ▒ | |
| │ pos_x = particles[i].pos_x; ▒ | |
| │ pos_y = particles[i].pos_y; ▒ | |
| │ vel_x = particles[i].vel_x * particles[i].force_x; ▒ | |
| 19.04 │ vmulps -0xa0(%rdx),%xmm1,%xmm1 ▒ | |
| │ vel_y = particles[i].vel_y * particles[i].force_y; ▒ | |
| │ particles[i].pos_x = pos_x + vel_x; ▒ | |
| │ particles[i].pos_y = pos_y + vel_y; ▒ | |
| 3.77 │ vaddps -0xb0(%rdx),%xmm0,%xmm0 |
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