diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c b/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c new file mode 100644 index 00000000000..d5002346ed2 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fpredictive-commoning -fdump-tree-pcom-details" } */ + +int a[1000], b[1000]; + +void test(void) +{ + int i; + + for (i = 1; i < 999; i++) + b[i] = (a[i + 1] + a[i] + a[i - 1]) / 3; +} + +/* Verify that we used 3 temporary variables for the loop. */ +/* { dg-final { scan-tree-dump-times "Unrolling 3 times." 1 "pcom"} } */ +/* { dg-final { cleanup-tree-dump "pcom" } } */ |