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| author | Zdenek Dvorak <dvorakz@suse.cz> | 2005-07-12 01:59:17 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2005-07-11 23:59:17 +0000 |
| commit | b7eae7b8d19f531d0ef3a1efb1fdacfdbc5bfc92 (patch) | |
| tree | 2dbef04c2f2db68628a4762f85cddb33c11d1be9 /gcc/testsuite | |
| parent | 70028b61459cb2089d18bbd42d582c3411a9edfc (diff) | |
| download | gcc-b7eae7b8d19f531d0ef3a1efb1fdacfdbc5bfc92.zip gcc-b7eae7b8d19f531d0ef3a1efb1fdacfdbc5bfc92.tar.gz gcc-b7eae7b8d19f531d0ef3a1efb1fdacfdbc5bfc92.tar.bz2 | |
tree-flow.h (remove_empty_loops, [...]): Declare.
* tree-flow.h (remove_empty_loops, single_dom_exit): Declare.
* passes.c (init_optimization_passes): Add pass_empty_loop.
* tree-pass.h (pass_empty_loop): Declare.
* tree-ssa-loop-ivcanon.c (empty_loop_p, remove_empty_loop,
try_remove_empty_loop, remove_empty_loops): New functions.
* tree-ssa-loop-ivopts.c (single_dom_exit): Export.
* tree-ssa-loop.c (tree_ssa_empty_loop, pass_empty_loop): New.
* gcc.dg/tree-ssa/loop-10.c: New test.
From-SVN: r101901
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/loop-10.c | 32 |
2 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 174c679..2a0a5f8 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2005-07-12 Zdenek Dvorak <dvorakz@suse.cz> + + * gcc.dg/tree-ssa/loop-10.c: New test. + 2005-07-11 Kazu Hirata <kazu@codesourcery.com> * gcc.c-torture/execute/20020720-1.x: Remove. diff --git a/gcc/testsuite/gcc.dg/tree-ssa/loop-10.c b/gcc/testsuite/gcc.dg/tree-ssa/loop-10.c new file mode 100644 index 0000000..6a0f94d --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/loop-10.c @@ -0,0 +1,32 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -fdump-tree-vars" } */ + +int bar (void); + +void foo (void) +{ + unsigned i, j, n; + + for (i = 0; i < 100000; i++) + ; + + n = bar (); + for (i = 0; i < n; i++) + ; + + for (i = 0; i < n; i++) + for (j = 0; j < n; j++) + ; + + /* These should not be removed. */ + for (i = 0; i < 10000; i++) + bar (); + + for (i = 0; i != n; i += 2) + ; +} + +/* { dg-final { scan-tree-dump-times "if " 3 "vars" } } */ +/* { dg-final { scan-tree-dump-times "bar " 2 "vars" } } */ + +/* { dg-final { cleanup-tree-dump "vars" } } */ |