diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-04 15:19:19 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-04 15:19:19 +0000 |
| commit | 805e3e15bb9db8d0946fa36ac619bffc3af8dac8 (patch) | |
| tree | f3eb52d8af926dd9719f0f6e47ce85a8efb2f2f9 | |
| parent | 8b5e99f041c643a6f7c5ae3cc7f8a7540fb75c37 (diff) | |
| download | gcc-805e3e15bb9db8d0946fa36ac619bffc3af8dac8.tar.gz | |
2010-11-04 Richard Guenther <rguenther@suse.de>
PR rtl-optimization/46183
* gcse.c (execute_rtl_cprop): Cleanup the CFG if something changed.
(execute_rtl_pre): Likewise.
(execute_rtl_hoist): Likewise.
* gcc.dg/torture/pr46183.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@166316 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/gcse.c | 18 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr46183.c | 20 |
4 files changed, 47 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 206f860fe04..71bd8b4edc3 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,12 @@ 2010-11-04 Richard Guenther <rguenther@suse.de> + PR rtl-optimization/46183 + * gcse.c (execute_rtl_cprop): Cleanup the CFG if something changed. + (execute_rtl_pre): Likewise. + (execute_rtl_hoist): Likewise. + +2010-11-04 Richard Guenther <rguenther@suse.de> + PR tree-optimization/46068 * ipa-split.c (consider_split): Remove gcc_unreachable. diff --git a/gcc/gcse.c b/gcc/gcse.c index 70f0fac0ed4..595fdb2b054 100644 --- a/gcc/gcse.c +++ b/gcc/gcse.c @@ -5246,10 +5246,14 @@ gate_rtl_cprop (void) static unsigned int execute_rtl_cprop (void) { + int changed; delete_unreachable_blocks (); df_set_flags (DF_LR_RUN_DCE); df_analyze (); - flag_rerun_cse_after_global_opts |= one_cprop_pass (); + changed = one_cprop_pass (); + flag_rerun_cse_after_global_opts |= changed; + if (changed) + cleanup_cfg (0); return 0; } @@ -5265,9 +5269,13 @@ gate_rtl_pre (void) static unsigned int execute_rtl_pre (void) { + int changed; delete_unreachable_blocks (); df_analyze (); - flag_rerun_cse_after_global_opts |= one_pre_gcse_pass (); + changed = one_pre_gcse_pass (); + flag_rerun_cse_after_global_opts |= changed; + if (changed) + cleanup_cfg (0); return 0; } @@ -5286,9 +5294,13 @@ gate_rtl_hoist (void) static unsigned int execute_rtl_hoist (void) { + int changed; delete_unreachable_blocks (); df_analyze (); - flag_rerun_cse_after_global_opts |= one_code_hoisting_pass (); + changed = one_code_hoisting_pass (); + flag_rerun_cse_after_global_opts |= changed; + if (changed) + cleanup_cfg (0); return 0; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index e2179c7050d..6928ea0b184 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2010-11-04 Richard Guenther <rguenther@suse.de> + PR rtl-optimization/46183 + * gcc.dg/torture/pr46183.c: New testcase. + +2010-11-04 Richard Guenther <rguenther@suse.de> + PR tree-optimization/46068 * gcc.dg/torture/pr46068.c: New testcase. diff --git a/gcc/testsuite/gcc.dg/torture/pr46183.c b/gcc/testsuite/gcc.dg/torture/pr46183.c new file mode 100644 index 00000000000..9582c34e084 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr46183.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-fno-dse" } */ + +void bar(void); + +void foo (int i, ...) +{ + __builtin_va_list ap; + __builtin_va_start (ap, i); + __builtin_va_arg (ap, int); + while (i) i++; + __builtin_va_arg (ap, int); + while (i) i++; + __builtin_va_arg (ap, int); + while (i) i++; + __builtin_va_arg (ap, int); + if (i) + bar (); +} + |