diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp20.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp20.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp20.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp20.c new file mode 100644 index 000000000..14da7df48 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp20.c @@ -0,0 +1,28 @@ +/* { dg-do compile } */ +/* { dg-options "-fwrapv -O1 -ftree-vrp -fdump-tree-vrp1" } */ + +extern void abort (); +extern void exit (int); + +int f (int a) { + if (a != 0) { + a = a > 0 ? a : -a; + if (a == 0) + return 1; + return 0; + } + return 0; +} + +int g (int b) { + if (b != 0) { + b = b > 0 ? b : -b; + if (b != 0) + return 0; + } + return 1; +} + +/* { dg-final { scan-tree-dump "Folding predicate a_. == 0 to 0" "vrp1" } } */ +/* { dg-final { scan-tree-dump "Folding predicate b_. != 0 to 1" "vrp1" } } */ +/* { dg-final { cleanup-tree-dump "vrp1" } } */ |