URL
https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk
Subversion Repositories openrisc_me
[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [vect/] [wrapv-vect-reduc-dot-s8b.c] - Rev 399
Go to most recent revision | Compare with Previous | Blame | View Log
/* { dg-require-effective-target vect_int } */ #include <stdarg.h> #include "tree-vect.h" #define N 64 #define DOT -21856 signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63}; signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}; /* char->short->short dot product. The dot-product pattern should be detected. Should be vectorized on vect_sdot_qi targets (targets that support dot-product of signed char). This test currently fails to vectorize on targets that support dot-product of chars into and int accumulator. Can also be vectorized as widening-mult + summation, or with type-conversion support. */ __attribute__ ((noinline)) short foo(int len) { int i; short result = 0; for (i=0; i<len; i++) { result += (X[i] * Y[i]); } return result; } int main (void) { int i; short dot; check_vect (); dot = foo (N); if (dot != DOT) abort (); return 0; } /* { dg-final { scan-tree-dump-times "vect_recog_dot_prod_pattern: detected" 1 "vect" } } */ /* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 1 "vect" } } */ /* When vectorizer is enhanced to vectorize accumulation into short for targets that support accumulation into int (e.g. ia64) we'd have: dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_sdot_qi } } */ /* In the meantime expect: */ /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_widen_mult_qi_to_hi || vect_unpack } } } } */ /* { dg-final { cleanup-tree-dump "vect" } } */
Go to most recent revision | Compare with Previous | Blame | View Log