2004-05-21 Andrew Pinski <pinskia@physics.uc.edu>

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

diff --git a/gcc/regmove.c b/gcc/regmove.c
index c08a720..c55a74f 100644 (file)
--- a/gcc/regmove.c
+++ b/gcc/regmove.c
@@ -1,6 +1,6 @@
 /* Move registers around to reduce number of move instructions needed.
    Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -135,7 +135,7 @@ try_auto_increment (rtx insn, rtx inc_insn, rtx inc_insn_set, rtx reg,
                  /* If there is a REG_DEAD note on this insn, we must
                     change this not to REG_UNUSED meaning that the register
                     is set, but the value is dead.  Failure to do so will
-                    result in a sched1 abort -- when it recomputes lifetime
+                    result in a sched1 dieing -- when it recomputes lifetime
                     information, the number of REG_DEAD notes will have
                     changed.  */
                  rtx note = find_reg_note (insn, REG_DEAD, reg);
@@ -834,9 +834,6 @@ copy_src_to_dest (rtx insn, rtx src, rtx dest, int old_max_uid)
 
       if (REGNO_LAST_UID (src_regno) == insn_uid)
        REGNO_LAST_UID (src_regno) = move_uid;
-
-      if (REGNO_LAST_NOTE_UID (src_regno) == insn_uid)
-       REGNO_LAST_NOTE_UID (src_regno) = move_uid;
     }
 }
 
@@ -1153,10 +1150,11 @@ regmove_optimize (rtx f, int nregs, FILE *regmove_dump_file)
                  && GET_MODE_SIZE (GET_MODE (dst))
                     >= GET_MODE_SIZE (GET_MODE (SUBREG_REG (dst))))
                {
-                 src_subreg
-                   = gen_rtx_SUBREG (GET_MODE (SUBREG_REG (dst)),
-                                     src, SUBREG_BYTE (dst));
                  dst = SUBREG_REG (dst);
+                 src_subreg = lowpart_subreg (GET_MODE (dst),
+                                              src, GET_MODE (src));
+                 if (!src_subreg)
+                   continue;
                }
              if (!REG_P (dst)
                  || REGNO (dst) < FIRST_PSEUDO_REGISTER)
@@ -2459,4 +2457,7 @@ combine_stack_adjustments_for_block (basic_block bb)
 
   if (last_sp_set && last_sp_adjust == 0)
     delete_insn (last_sp_set);
+
+  if (memlist)
+    free_csa_memlist (memlist);
 }