diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/ldist-15.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/ldist-15.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ldist-15.c b/gcc/testsuite/gcc.dg/tree-ssa/ldist-15.c new file mode 100644 index 000000000..7ce3b956b --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/ldist-15.c @@ -0,0 +1,23 @@ +/* { dg-do compile } */ +/* { dg-options "-O3 -fdump-tree-ldist-details" } */ + +int x[1000]; + +void foo (int n) +{ + int i; + + for (i = 0; i < n; ++i) + { + x[2*i] = 0; + x[2*i + 1] = 1; + } +} + +/* We should not apply loop distribution as it is not beneficial from + a data locality point of view. Also it is not possible to generate + a memset (0) as the write has a stride of 2. */ + +/* { dg-final { scan-tree-dump-not "distributed: split to" "ldist" } } */ +/* { dg-final { scan-tree-dump-not "__builtin_memset" "ldist" } } */ +/* { dg-final { cleanup-tree-dump "ldist" } } */ |