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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/pr48172.c | |
download | cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2 cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/vect/pr48172.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/vect/pr48172.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/pr48172.c b/gcc/testsuite/gcc.dg/vect/pr48172.c new file mode 100644 index 000000000..892aecaf8 --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/pr48172.c @@ -0,0 +1,33 @@ +/* { dg-do run } */ + +extern void *memset(void *s, int c, __SIZE_TYPE__ n); +extern void abort (void); + +#define ASIZE 1028 +#define HALF (ASIZE/2) + +int main() { + unsigned int array[ASIZE]; + int i; + + memset(array, 0, sizeof(array)); + + /* initialize first half of the array */ + for (i = 0; i < HALF; i++) + array[i] = i; + + /* fill second half of array in by summing earlier elements of the array + gcc 4.5.1 and 4.5.2 incorrectly vectorize this loop! aray[1025] is left + at 0 for ASIZE=1028 */ + for (i = 0; i < HALF-1; i++) + array[HALF+i] = array[2*i] + array[2*i + 1]; + + /* see if we have any failures */ + for (i = 0; i < HALF - 1; i++) + if (array[HALF+i] != array[2*i] + array[2*i + 1]) + abort (); + + return 0; +} + +/* { dg-final { cleanup-tree-dump "vect" } } */ |