diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/foldaddr-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/foldaddr-1.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/foldaddr-1.c b/gcc/testsuite/gcc.dg/tree-ssa/foldaddr-1.c new file mode 100644 index 000000000..a3c6a2ece --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/foldaddr-1.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -fdump-tree-original" } */ +#include <stddef.h> + +char *a; +int foo(char *b) +{ + return a+5+(ptrdiff_t)b == (ptrdiff_t)b+a; +} + +/* Folding should have determined that the two addresses were + not identical and thus collapsed the function into a trivial + "return 0". */ +/* { dg-final { scan-tree-dump-times "return 0" 1 "original" { xfail *-*-* } } } */ +/* { dg-final { cleanup-tree-dump "original" } } */ + |