re PR middle-end/46667 (-freorder-blocks-and-partition -g failed and libstdc++…

re PR middle-end/46667 (-freorder-blocks-and-partition -g failed and libstdc++ builds for arm-eabi are broken.)

	PR middle-end/46667
	* varasm.c (assemble_start_function): Do not call resolve_unique_section.
	* cfgexpand.c (gimple_expand_cfg): Resolve it here.

From-SVN: r167795

gcc/ChangeLog

+2010-12-14  Jan Hubicka  <jh@suse.cz>
+
+	PR middle-end/46667
+	* varasm.c (assemble_start_function): Do not call resolve_unique_section.
+	* cfgexpand.c (gimple_expand_cfg): Resolve it here.
+
 2010-12-14  Alexander Monakov  <amonakov@ispras.ru>
 
 	PR rtl-optimization/46875

gcc/cfgexpand.c

@@ -3951,6 +3951,10 @@ gimple_expand_cfg (void)
   crtl->preferred_stack_boundary = STACK_BOUNDARY;
   cfun->cfg->max_jumptable_ents = 0;
 
+  /* Resovle the function section.  Some targets, like ARM EABI rely on knowledge
+     of the function section at exapnsion time to predict distance of calls.  */
+  resolve_unique_section (current_function_decl, 0, flag_function_sections);
+
   /* Expand the variables recorded during gimple lowering.  */
   timevar_push (TV_VAR_EXPAND);
   start_sequence ();

gcc/varasm.c

@@ -1551,8 +1551,6 @@ assemble_start_function (tree decl, const char *fnname)
   if (CONSTANT_POOL_BEFORE_FUNCTION)
     output_constant_pool (fnname, decl);
 
-  resolve_unique_section (decl, 0, flag_function_sections);
-
   /* Make sure the not and cold text (code) sections are properly
      aligned.  This is necessary here in the case where the function
      has both hot and cold sections, because we don't want to re-set