Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/vect/vect-outer-fir-big-array.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* { 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 } } } } } */