rtl.h (struct rtx_def): Add comment for field jump.

2013-04-26  Vladimir Makarov  <vmakarov@redhat.com>

	* rtl.h (struct rtx_def): Add comment for field jump.
	(LRA_SUBREG_P): New macro.
	* recog.c (register_operand): Check LRA_SUBREG_P.
	* lra.c (lra): Add note at the end of RTL code. Align non-empty
	stack frame.
	* lra-spills.c (lra_spill): Align stack after spilling pseudos.
	(lra_final_code_change): Skip subreg change for operators.
	* lra-eliminations.c (eliminate_regs_in_insn): Make return earlier
	if there are no operand changes.
	* lra-constraints.c (curr_insn_set): New.
	(match_reload): Set LRA_SUBREG_P.
	(emit_spill_move): Ditto.
	(check_and_process_move): Use curr_insn_set. Process only single
	set insns.  Don't initialize sec_mem_p and change_p.
	(simplify_operand_subreg): Use LRA_SUBREG_P.
	(reg_in_class_p): New function.
	(process_alt_operands): Use it.  Use #if HAVE_ATTR_enabled instead
	of #ifdef.  Add code to remove cycling.
	(process_address): Check EXTRA_CONSTRAINT_STR. Process even if
	non-null disp.  Reload inner instead of disp when base and index
	are null.  Try to put lo_sum into register.
	(EBB_PROBABILITY_CUTOFF): Redefine probability in percents.
	(check_and_process_move): Move code for move cost check to
	simple_move_p.  Remove equiv_substitution.
	(simple_move_p): New function.
	(curr_insn_transform): Initialize sec_mem_p and change_p.  Set up
	curr_insn_set.  Call check_and_process_move only for single set
	insns.  Use the new function.  Move call of check_and_process_move
	after operand equiv substitution and address process.

From-SVN: r198344

1 files changed, 9 insertions, 0 deletions

diff --git a/gcc/lra.c b/gcc/lra.c
index a4da0a0..7c6bff1 100644
--- a/gcc/lra.c
+++ b/gcc/lra.c
@@ -2203,6 +2203,10 @@ lra (FILE *f)
 
   timevar_push (TV_LRA);
 
+  /* Make sure that the last insn is a note.  Some subsequent passes
+     need it.  */
+  emit_note (NOTE_INSN_DELETED);
+
   COPY_HARD_REG_SET (lra_no_alloc_regs, ira_no_alloc_regs);
 
   init_reg_info ();
@@ -2259,6 +2263,11 @@ lra (FILE *f)
   bitmap_initialize (&lra_split_regs, &reg_obstack);
   bitmap_initialize (&lra_optional_reload_pseudos, &reg_obstack);
   live_p = false;
+  if (get_frame_size () != 0 && crtl->stack_alignment_needed)
+    /* If we have a stack frame, we must align it now.  The stack size
+       may be a part of the offset computation for register
+       elimination.  */
+    assign_stack_local (BLKmode, 0, crtl->stack_alignment_needed);
   for (;;)
     {
       for (;;)