diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/loop-7.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/loop-7.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/loop-7.c b/gcc/testsuite/gcc.dg/tree-ssa/loop-7.c new file mode 100644 index 000000000..ab4a5026f --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/loop-7.c @@ -0,0 +1,35 @@ +/* PR tree-optimization/19828 */ +/* { dg-do compile } */ +/* { dg-options "-O1 -fdump-tree-lim-details" } */ + +int cst_fun1 (int) __attribute__((__const__)); +int cst_fun2 (int) __attribute__((__const__)); +int pure_fun1 (int) __attribute__((__pure__)); +int pure_fun2 (int) __attribute__((__pure__)); +int foo (void); + +int xxx (void) +{ + int i, k = foo (), x = 0; + + for (i = 0; i < 100; i++) + { + x += cst_fun1 (k); + x += pure_fun1 (k); + + if (k) + { + x += cst_fun2 (k); + x += pure_fun2 (k); + } + } + + return x; +} + +/* Calls to cst_fun1 and pure_fun1 may be moved out of the loop. + Calls to cst_fun2 and pure_fun2 should not be, since calling + with k = 0 may be invalid. */ + +/* { dg-final { scan-tree-dump-times "Moving statement" 2 "lim1" } } */ +/* { dg-final { cleanup-tree-dump "lim\[1-2\]" } } */ |