reload1.c (alter_reg): Undo the BYTE_BIG_ENDIAN correction performed by assign_stack_...

	* reload1.c (alter_reg): Undo the BYTE_BIG_ENDIAN correction performed
	by assign_stack_local on the IRA path for stack slot sharing as well
	as the non-IRA path.

From-SVN: r140295

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 73f34cdd91ca21863ed5538689954e644a5c4eb5..d55103b5b931ba2c729e1893daab377493efeb2f 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2008-09-11  Jeff Law <law@redhat.com>
+
+       * reload1.c (alter_reg): Undo the BYTE_BIG_ENDIAN correction performed
+       by assign_stack_local on the IRA path for stack slot sharing
+       as well as the non-IRA path.
+
 2008-09-11  Uros Bizjak  <ubizjak@gmail.com>
 
        * config/i386/i386.h: Fix whitespace issues.

diff --git a/gcc/reload1.c b/gcc/reload1.c
index 1ea41091260c5346cb1626c0ff2d2f578288f762..93457c162c068ed44d23819f91b3e2eba504bb3a 100644 (file)
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -2176,18 +2176,28 @@ alter_reg (int i, int from_reg, bool dont_share_p)
         inherent space, and no less total space, then the previous slot.  */
       else if (from_reg == -1 || (! dont_share_p && flag_ira && optimize))
        {
+         rtx stack_slot;
          alias_set_type alias_set = new_alias_set ();
 
          /* No known place to spill from => no slot to reuse.  */
          x = assign_stack_local (mode, total_size,
                                  min_align > inherent_align
                                  || total_size > inherent_size ? -1 : 0);
+
+         stack_slot = x;
+
          if (BYTES_BIG_ENDIAN)
            /* Cancel the  big-endian correction done in assign_stack_local.
               Get the address of the beginning of the slot.
               This is so we can do a big-endian correction unconditionally
               below.  */
            adjust = inherent_size - total_size;
+           if (adjust)
+             stack_slot
+               = adjust_address_nv (x, mode_for_size (total_size
+                                                      * BITS_PER_UNIT,
+                                                      MODE_INT, 1),
+                                    adjust);
 
          /* Nothing can alias this slot except this pseudo.  */
          set_mem_alias_set (x, alias_set);
@@ -2195,7 +2205,7 @@ alter_reg (int i, int from_reg, bool dont_share_p)
 
          if (! dont_share_p && flag_ira && optimize)
            /* Inform IRA about allocation a new stack slot.  */
-           ira_mark_new_stack_slot (x, i, total_size);
+           ira_mark_new_stack_slot (stack_slot, i, total_size);
        }
 
       /* Reuse a stack slot if possible.  */