basic-block.h (find_sub_basic_blocks): Use sbitmap parameter.

	* basic-block.h (find_sub_basic_blocks): Use sbitmap parameter.
	* cfgbuild.c (find_bb_boundaries, compute_outgoing_frequencies):
	Break out from ...
	(find_sub_basic_blocks): ... here;
	(find_many_sub_basic_blocks): New.
	* recog.c (split_all_insns): Update find_sub_basic_blocks call.

	* i386.h (ASM_PREFERRED_EH_DATA_FORMAT): Define sdata4.

	* i386.c (ix86_va_arg): Kill indirect_p handling; fix aliasing issues.:

	* i386.c (split_di, split_ti): Revamp to use simplify_subreg.

	* timevar.def (TV_LIFE, TV_LIFE_UPDATE, TV_MODE_SWITCH): new.
	* flow.c (update_life_info): Measure time.
	* c-decl.c: Include timevar.h
	(c_expand_body): Measure time.
	* toplev.c (rest_of_compilation): Measure time of mode switching
	separately.
	* Makefile.in (c-decl.o, cfgcleanup.o): Add dependancy.

	* toplev.c (flag_asynchronous_unwind_tables): New global variable.
	(lang_independent_options): Add asynchronous-unwind-tables
	(toplev_main): flag_asynchronous_unwind_tables implies
	flag_unwind_tables.
	* flags.h (flag_asynchronous_unwind_tables): Declare.
	* dwarf2out.c (dwarf2out_stack_adjust): Take into account
	flag_asynchronous_unwind_tables.
	(output_call_frame_info): Likewise.
	* invoke.texi (-fasynchronous-unwind-tables): Document.
	* i386.c (optimization_options): Enable
	flag_asynchronous_unwind_tables.

	* i386.c (ix86_expand_setcc):  Always expect target to be QImode.
	* i386.md (s* expanders): Destination is QImode.

	* toplev.c (rest_of_compilation): Do not call clear_log_links.
	* rtl.h (clear_log_links): Kill.
	* flow.c (clear_log_links): Make static; accept blocks parameter;
	do no clear life info.
	(update_life_info): Call clear_log_links.

	* cfganal.c (forwarder_block_p): Avoid active_insn_p calls.

From-SVN: r46374

1 files changed, 13 insertions, 6 deletions

diff --git a/gcc/toplev.c b/gcc/toplev.c
index 2df15e7f18c..3bc9dac156b 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -737,6 +737,10 @@ int flag_exceptions;
 
 int flag_unwind_tables = 0;
 
+/* Nonzero means generate frame unwind info table exact at each insn boundary */
+
+int flag_asynchronous_unwind_tables = 0;
+
 /* Nonzero means don't place uninitialized global data in common storage
    by default.  */
 
@@ -1096,6 +1100,8 @@ lang_independent_options f_options[] =
    N_("Enable exception handling") },
   {"unwind-tables", &flag_unwind_tables, 1,
    N_("Just generate unwind tables for exception handling") },
+  {"asynchronous-unwind-tables", &flag_asynchronous_unwind_tables, 1,
+   N_("Generate unwind tables exact at each instruction boundary") },
   {"non-call-exceptions", &flag_non_call_exceptions, 1,
    N_("Support synchronous non-call exceptions") },
   {"profile-arcs", &profile_arc_flag, 1,
@@ -2933,10 +2939,6 @@ rest_of_compilation (decl)
       convert_from_ssa ();
       /* New registers have been created.  Rescan their usage.  */
       reg_scan (insns, max_reg_num (), 1);
-      /* Life analysis used in SSA adds log_links but these
-	 shouldn't be there until the flow stage, so clear
-	 them away.  */
-      clear_log_links (insns);
 
       close_dump_file (DFI_ussa, print_rtl_with_bb, insns);
       timevar_pop (TV_FROM_SSA);
@@ -3370,7 +3372,7 @@ rest_of_compilation (decl)
   register_life_up_to_date = 0;
 
 #ifdef OPTIMIZE_MODE_SWITCHING
-  timevar_push (TV_GCSE);
+  timevar_push (TV_MODE_SWITCH);
 
   no_new_pseudos = 0;
   if (optimize_mode_switching (NULL))
@@ -3382,7 +3384,7 @@ rest_of_compilation (decl)
     }
   no_new_pseudos = 1;
 
-  timevar_pop (TV_GCSE);
+  timevar_pop (TV_MODE_SWITCH);
 #endif
 
   timevar_push (TV_SCHED);
@@ -4911,6 +4913,11 @@ toplev_main (argc, argv)
       flag_rerun_cse_after_loop = 1;
     }
 
+  if (flag_non_call_exceptions)
+    flag_asynchronous_unwind_tables = 1;
+  if (flag_asynchronous_unwind_tables)
+    flag_unwind_tables = 1;
+
   /* Warn about options that are not supported on this machine.  */
 #ifndef INSN_SCHEDULING
   if (flag_schedule_insns || flag_schedule_insns_after_reload)