cgraphbuild.c (record_reference): Drop non-unit-at-a-time code.

	* cgraphbuild.c (record_reference): Drop non-unit-at-a-time code.
	(build_cgraph_edges): Likewise.
	* cgraph.c (cgraph_node): Do not update assembler hash.
	(cgraph_remove_node): Drop non-unit-at-a-time code.
	* tree-pass.h (pass_O0_always_inline): Remove.
	* ipa-reference.c (gate_reference): Remove unit-at-a-time check.
	* toplev.c (process_options): Flag unit-at-a-time does not imply
	no section anchors.
	* cgraphunit.c: Update comments.
	(decide_is_function_needed): Drop non-unit-at-a-time mode.
	(cgraph_assemble_pending_functions): Remove.
	(cgraph_reset_node): Drop non-unit-at-a-time code.
	(cgraph_finalize_function): Likewise.
	(cgraph_analyze_function): Likewise.
	(cgraph_finalize_compilation_unit): Likewise.
	(cgraph_expand_function): Likewise.
	(cgraph_optimize): Likesise.
	(save_inline_function_body): Likewise.
	* ipa-pure-const.c (gate_pure_const): Drop flag_unit_at_a_time check.
	* tree-ssa-alias.c (maybe_be_aliased): Likewise.
	* ipa-inline.c: Update comments.
	(enum inlining_mode): remove INLINE_SPEED.
	(cgraph_clone_inlined_nodes): Drop unit-at-a-time check.
	(cgraph_mark_inline_edge): Likewise.
	(try_inline): Likewise.
	(cgraph_decide_inlining_incrementally): Likewise.
	(cgraph_gate_inlining): Remove.
	(cgraph_early_inlining): Remove flag_unit_at_a_time checks.
	(cgraph_gate_early_inlining): Likewise.
	(gate_inline_passes): Remove.
	(pass_inline_parameters, pass_ipa_inline): Remove gates.
	(cgraph_gate_O0_always_inline, cgraph_O0_always_inline, 
	pass_O0_always_inline): Remove.
	* c-pch.c (c_pch_matching): Remove -funit-at-a-time.
	* dwarf2out.c (reference_to_unused): Remove flag_unit_at_a_time check.
	* opts.c (no_unit_at_a_time_default): Remove.
	(decode_options): Remove flag_unit_at_a_time reset and warning.
	* opts.h (no_unit_at_a_time_default): Remove.
	* c-decl.c (diagnose_mismatched_decls): Do not require inline keyword
	early in GNU dialect.
	(merge_decls): Update comment; drop unit-at-a-time check.
	(finish_decl): Likewise.
	(grok_declaration): Remove flag_inline_trees code.
	(finish_functions): Return on function returning non-void on all
	statics.
	* ipa-tye-escape.c (gate_type_escape_vars): Remove.
	* cfgexpand.c (expand_one_static_var): Remove.
	(expand_one_var): Remove expand_one_static_var call.
	(expand_used_vars_for_block): Remove flag_unit_a_time check.
	* c-opts.c (c_common_post_options): Remove flag_inline_trees code
	and flag_unit_at_a-time compatibility checks.
	* varasm.c (assemble_alias): Remove flag_unit_at_a_time check.
	* tree-inline.c (flag_inline_trees): Remove.
	(inlinable_function_p): Don't check it.
	(expand_call_inline): Remove non-unit-at-a-time code.
	* tree-inline.h (flag_inline_trees): Remove.
	* tree-optimize.c (execute_early_local_optimizations): Remove
	unit-at-a-time checks.
	(tree_rest_of_compilation): Likewise.
	* combine.c (setup_incoming_promotions): Likewise.
	* tree-profile.c (tree_gen_ic_func_profiler): Likewise.
	* tree-ssa-structalias.c (delete_points_to_sets): Likewise.
	* passes.c (pass_inline_parameters): Update comments; remove
	O0_alwaysinline pass.
	(execute_one_ipa_transform_pass): Do not reset in_gimple_form.
	(execute_one_pass): Likewise.
	* i386.c (ix86_function_regparm): Remove unit-at-a-time check.
	(ix86_function_sseregparm): Likewise.
	* arm.c (arm_function_in_section_p): Likewise.
	* bfin.c (bfin_load_pic_reg, bfin_function_ok_for_sibcall): Likewise.
	* varpool.c: Update comments.
	(decide_is_variable_needed): Remove unit-at-a-time checks.
	(varpool_finalize_decl): Likewise.

	* ada/utils.c (end_subprog_body): Remove inline trees check.
	* ada/misc.c (gnat_post_options): Do not set flag_inline_trees.

	* fortran/options.c (gfc_post_options): Remove flag_unline_trees code.

	* gcc.dg/winline-4.c: Remove.
	* gcc.dg/pch/valid-3.hs: Remove.
	* gcc.dg/pch/valid-3.c: Remove.
	* g++.old-deja/g++.brendan/crash52.C: Accept returning void warning
	* g++.old-deja/g++.jason/report.C: Likewise.
	* testsuite/g++.dg/warn/pr23075.C: We get returning void warning
	instead of control flow warning.


	* cp/decl.c (duplicate_decls): Update comment and unit-at-a-time.
	(grogfndecl): Drop flag_inline_trees code.
	* cp/pt.c (instantiate_decl): Drop flag_iline_trees code.
	* cp/lex.c (cxx_init): Do not set unit-at-a-time.


	* java/decl.c: Include cgraph.h
	(end_java_method): Remove non-unit-at-a-time code.
	(java_mark_decl_local): Likewise; sanity check that we don't touch
	finalized nodes.

From-SVN: r138140

4 files changed, 11 insertions, 15 deletions

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index c9eaf0f..b63655e9 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,10 @@
+2008-07-23  Jan Hubicka  <jh@suse.cz>
+
+	* cp/decl.c (duplicate_decls): Update comment and unit-at-a-time.
+	(grogfndecl): Drop flag_inline_trees code.
+	* cp/pt.c (instantiate_decl): Drop flag_iline_trees code.
+	* cp/lex.c (cxx_init): Do not set unit-at-a-time.
+
 2008-07-23  Jason Merrill  <jason@redhat.com>
 
 	Implement defaulted/deleted functions as per N2346
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index d02cab2..1bc83d4 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -1954,8 +1954,9 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
 	}
       else if (new_defines_function && DECL_INITIAL (olddecl))
 	{
-	  /* C++ is always in in unit-at-a-time mode, so we never
-	     inline re-defined extern inline functions.  */
+	  /* Never inline re-defined extern inline functions.
+	     FIXME: this could be better handled by keeping both
+	     function as separate declarations.  */
 	  DECL_INLINE (newdecl) = 0;
 	  DECL_UNINLINABLE (newdecl) = 1;
 	}
@@ -6643,7 +6644,7 @@ grokfndecl (tree ctype,
   /* We inline functions that are explicitly declared inline, or, when
      the user explicitly asks us to, all functions.  */
   if (DECL_DECLARED_INLINE_P (decl)
-      || (flag_inline_trees == 2 && !DECL_INLINE (decl) && funcdef_flag))
+      || (!DECL_INLINE (decl) && funcdef_flag))
     DECL_INLINE (decl) = 1;
 
   DECL_EXTERNAL (decl) = 1;
diff --git a/gcc/cp/lex.c b/gcc/cp/lex.c
index ee2f2a8..2c169d1 100644
--- a/gcc/cp/lex.c
+++ b/gcc/cp/lex.c
@@ -247,17 +247,6 @@ cxx_init (void)
 
   cxx_init_decl_processing ();
 
-  /* The fact that G++ uses COMDAT for many entities (inline
-     functions, template instantiations, virtual tables, etc.) mean
-     that it is fundamentally unreliable to try to make decisions
-     about whether or not to output a particular entity until the end
-     of the compilation.  However, the inliner requires that functions
-     be provided to the back end if they are to be inlined.
-     Therefore, we always use unit-at-a-time mode; in that mode, we
-     can provide entities to the back end and it will decide what to
-     emit based on what is actually needed.  */
-  flag_unit_at_a_time = 1;
-
   if (c_common_init () == false)
     {
       input_location = saved_loc;
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 60e7528..ef4fa36 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -15222,7 +15222,6 @@ instantiate_decl (tree d, int defer_ok,
 	 job, even though we'll not be emitting a copy of this
 	 function.  */
       if (!(TREE_CODE (d) == FUNCTION_DECL
-	    && flag_inline_trees
 	    && DECL_DECLARED_INLINE_P (d)))
 	goto out;
     }