2009-11-19 Paul Brook <paul@codesourcery.com>

[pf3gnuchains/gcc-fork.git] / gcc / ira.c

diff --git a/gcc/ira.c b/gcc/ira.c
index b960f76..a3e899f 100644 (file)
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -1442,6 +1442,9 @@ ira_setup_eliminable_regset (void)
   int need_fp
     = (! flag_omit_frame_pointer
        || (cfun->calls_alloca && EXIT_IGNORE_STACK)
+       /* We need the frame pointer to catch stack overflow exceptions
+         if the stack pointer is moving.  */
+       || (flag_stack_check && STACK_CHECK_MOVING_SP)
        || crtl->accesses_prior_frames
        || crtl->stack_realign_needed
        || targetm.frame_pointer_required ());
@@ -3132,6 +3135,9 @@ ira (FILE *f)
      epilogue thus changing register elimination offsets.  */
   current_function_is_leaf = leaf_function_p ();
 
+  if (resize_reg_info () && flag_ira_loop_pressure)
+    ira_set_pseudo_classes (ira_dump_file);
+
   rebuild_p = update_equiv_regs ();
 
 #ifndef IRA_NO_OBSTACK
@@ -3158,7 +3164,6 @@ ira (FILE *f)
     }
 
   max_regno_before_ira = allocated_reg_info_size = max_reg_num ();
-  resize_reg_info ();
   ira_setup_eliminable_regset ();
       
   ira_overall_cost = ira_reg_cost = ira_mem_cost = 0;
@@ -3272,6 +3277,8 @@ ira (FILE *f)
 
   reload_completed = !reload (get_insns (), ira_conflicts_p);
 
+  finish_subregs_of_mode ();
+
   timevar_pop (TV_RELOAD);
 
   timevar_push (TV_IRA);