diff options
Diffstat (limited to 'gcc')
| -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 206f860..71bd8b4 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. @@ -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 e2179c7..6928ea0 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 0000000..9582c34 --- /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 (); +} + |