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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c b/gcc/testsuite/gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c new file mode 100644 index 000000000..68caa8bd1 --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c @@ -0,0 +1,57 @@ +/* { 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" } } */ |