diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/vrp08.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/vrp08.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c new file mode 100644 index 000000000..193199fbf --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c @@ -0,0 +1,24 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-tree-fre -fdump-tree-vrp1-details" } */ + +/* Compile with -fno-tree-fre -O2 to prevent CSEing *p. */ +foo (int a, int *p) +{ + int x = *p + 2; + int y = *p - 1; + int z = *p + 9; + + /* This should be folded to if (1), but only one ASSERT_EXPR should + be inserted. */ + if (p) + a = x + y + z; + else + a = x - y; + + return a; +} +/* Target with fno-delete-null-pointer-checks should not fold checks */ +/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */ +/* { dg-final { scan-tree-dump-times "PREDICATE: p_.* ne_expr 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */ +/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */ +/* { dg-final { cleanup-tree-dump "vrp1" } } */ |