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| author | Jeff Law <law@redhat.com> | 2016-10-03 13:28:24 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2016-10-03 13:28:24 -0600 |
| commit | 0a4e5cf3122f8237d840b34d0515151b61ffeb5e (patch) | |
| tree | 8f5ba8447a97730e48ec8aeadb75ec9d3eb338d0 /gcc/testsuite/gcc.c-torture | |
| parent | 95ccd17c610e928f1b8089192d89456dd0dc891f (diff) | |
| download | gcc-0a4e5cf3122f8237d840b34d0515151b61ffeb5e.zip gcc-0a4e5cf3122f8237d840b34d0515151b61ffeb5e.tar.gz gcc-0a4e5cf3122f8237d840b34d0515151b61ffeb5e.tar.bz2 | |
re PR tree-optimization/71550 (wrong code at -O3 on x86_64-linux-gnu)
PR tree-optimization/71550
PR tree-optimization/71403
* tree-ssa-threadbackward.c: Include tree-vectorizer.h
(profitable_jump_thread_path): Also return boolean indicating if
the realized path will create an irreducible loop.
Remove loop depth tests from 71403.
(fsm_find_control_statement_thread_paths): Remove loop depth tests
from 71403. If threading will create an irreducible loop, then
throw away loop iteration and related information.
PR tree-optimization/71550
PR tree-optimization/71403
* gcc.c-torture/execute/pr71550.c: New test.
From-SVN: r240727
Diffstat (limited to 'gcc/testsuite/gcc.c-torture')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr71550.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr71550.c b/gcc/testsuite/gcc.c-torture/execute/pr71550.c new file mode 100644 index 0000000..8d1ecda --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr71550.c @@ -0,0 +1,26 @@ + +extern void exit (int); + +int a = 3, b, c, f, g, h; +unsigned d; +char *e; + +int +main () +{ + for (; a; a--) + { + int i; + if (h && i) + __builtin_printf ("%d%d", c, f); + i = 0; + for (; i < 2; i++) + if (g) + for (; d < 10; d++) + b = *e; + i = 0; + for (; i < 1; i++) + ; + } + exit (0); +} |