function.c (expand_main_function): Make sure stack adjustments happen before sjlj...

* function.c (expand_main_function): Make sure stack adjustments
happen before sjlj exception setup.

From-SVN: r48316

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0a7b1138bb0deb1d957c51cedea1aa29f5a79deb..44e13a8cea5f9d8e2338a97100527aab88764f60 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2001-12-26  DJ Delorie  <dj@redhat.com>
+
+       * function.c (expand_main_function): Make sure stack adjustments
+       happen before sjlj exception setup.
+
 2001-12-26  David Edelsohn  <edelsohn@gnu.org>
 
        * rs6000.md (indirect_jump): Prefer CTR over LR.

diff --git a/gcc/function.c b/gcc/function.c
index b84fc1e544f848b794955f005344d20624643262..f5a3102bf4d70175665b5a68479314ef25db8325 100644 (file)
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -6278,8 +6278,9 @@ expand_main_function ()
   if (FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN)
     {
       int align = PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT;
-      rtx tmp;
+      rtx tmp, seq;
 
+      start_sequence ();
       /* Forcibly align the stack.  */
 #ifdef STACK_GROWS_DOWNWARD
       tmp = expand_simple_binop (Pmode, AND, stack_pointer_rtx, GEN_INT(-align),
@@ -6296,6 +6297,16 @@ expand_main_function ()
       /* Enlist allocate_dynamic_stack_space to pick up the pieces.  */
       tmp = force_reg (Pmode, const0_rtx);
       allocate_dynamic_stack_space (tmp, NULL_RTX, BIGGEST_ALIGNMENT);
+      seq = gen_sequence ();
+      end_sequence ();
+
+      for (tmp = get_last_insn (); tmp; tmp = PREV_INSN (tmp))
+       if (NOTE_P (tmp) && NOTE_LINE_NUMBER (tmp) == NOTE_INSN_FUNCTION_BEG)
+         break;
+      if (tmp)
+       emit_insn_before (seq, tmp);
+      else
+       emit_insn (seq);
     }
 #endif