/* { dg-do compile } */ | |
/* { dg-additional-options "-Ofast -funroll-loops" } */ | |
typedef unsigned char uchar; | |
typedef struct rgb_ {uchar r; uchar g; uchar b;} rgb; | |
#define N 512 | |
rgb in[N], out[N]; | |
float c[N]; | |
void foo(int n) | |
{ | |
int i, j; | |
for (i = 0; i < n; i++) //in and out are RGB byte arrays | |
{ | |
float r = 0, g = 0, b = 0; | |
for (j = 0; j < 5; j++) | |
{ | |
r += (float)in[i + j].r * c[j]; | |
g += (float)in[i + j].g * c[j]; | |
b += (float)in[i + j].b * c[j]; | |
} | |
out[i].r = (uchar)r; | |
out[i].g = (uchar)g; | |
out[i].b = (uchar)b; | |
} | |
} | |
/* { dg-final { scan-tree-dump "vectorized 1 loops in function" "vect" { target { vect_float && vect_intfloat_cvt } } } } */ |