https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119181
--- Comment #3 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
void
foo (int* a, int* __restrict b)
{
b[0] = a[0] * a[256];
b[1] = a[257] * a[1];
b[2] = a[2] * a[258];
b[3] = a[259] * a[3];
b[4] = a[260] * a[4];
b[5] = a[261] * a[5];
b[6] = a[6] * a[262];
b[7] = a[7] * a[263];
}
void
foo1 (int* a, int* __restrict b)
b[0] = a[0] * a[256];
b[1] = a[1] * a[257];
b[2] = a[2] * a[258];
b[3] = a[3] * a[259];
b[4] = a[4] * a[260];
b[5] = a[5] * a[261];
b[6] = a[6] * a[262];
b[7] = a[7] * a[263];
}
Use int instead of double.
Looks like if both operands satisfy same STMT_VINFO_GROUPED_ACCESS as first
stmt, we'd better have a heuristic to choose more closer one?
in vect_build_slp_tree_1
1360 || (ldst_p
1361 && (STMT_VINFO_GROUPED_ACCESS (stmt_info)
1362 != STMT_VINFO_GROUPED_ACCESS (first_stmt_info)))
1363 || (ldst_p
