Viewing file: vect-outer-fir-big-array.c (1.17 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
/* { dg-require-effective-target vect_float } */
#include <stdarg.h> #include "tree-vect.h"
#define N 80 #define M 256 float in[N+M]; float coeff[M]; float out[N]; float fir_out[N];
/* Should be vectorized. Fixed misaligment in the inner-loop. */ __attribute__ ((noinline)) void foo (){ int i,j,k; float diff;
for (i = 0; i < N; i++) { out[i] = 0; }
for (k = 0; k < 4; k++) { for (i = 0; i < N; i++) { diff = 0; for (j = k; j < M; j+=4) { diff += in[j+i]*coeff[j]; } out[i] += diff; } }
}
/* Vectorized. Changing misalignment in the inner-loop. */ __attribute__ ((noinline)) void fir (){ int i,j,k; float diff;
for (i = 0; i < N; i++) { diff = 0; for (j = 0; j < M; j++) { diff += in[j+i]*coeff[j]; } fir_out[i] = diff; } }
int main (void) { check_vect (); int i, j; float diff;
for (i = 0; i < M; i++) coeff[i] = i; for (i = 0; i < N+M; i++) in[i] = i;
foo (); fir ();
for (i = 0; i < N; i++) { if (out[i] != fir_out[i]) abort (); }
return 0; }
/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 2 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
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