diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/builtin-unreachable-2.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/builtin-unreachable-2.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/builtin-unreachable-2.c b/gcc/testsuite/gcc.dg/builtin-unreachable-2.c new file mode 100644 index 000000000..13bdb9f73 --- /dev/null +++ b/gcc/testsuite/gcc.dg/builtin-unreachable-2.c @@ -0,0 +1,20 @@ +/* Check that __builtin_unreachable() is a no-return function thus + causing the dead call to foo() to be removed. The comparison is + dead too, and should be removed. */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized -fdump-rtl-cse1" } */ +void foo (void); + +int +f (int i) +{ + if (i > 1) + __builtin_unreachable(); + if (i > 1) + foo (); + return 1; +} +/* { dg-final { scan-tree-dump-not "foo" "optimized" } } */ +/* { dg-final { scan-rtl-dump-not "\\(if_then_else" "cse1" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ +/* { dg-final { cleanup-rtl-dump "cse1" } } */ |