* config/arm/arm.c (thumb_expand_prologue): Tie prologue insns to fp.

From-SVN: r79496

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 365cd54..29cc5e4 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2004-03-15  Paul Brook  <paul@codesourcery.com>
+
+       * config/arm/arm.c (thumb_expand_prologue): Tie prologue insns to fp.
+
 2004-03-15  Gabriel Dos Reis  <gdr@integrable-solutions.net>
 
        * c-pretty-print.c (pp_c_semicolon): Fix formatting.

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 4cada0c..af59d83 100644 (file)
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -13110,6 +13110,12 @@ thumb_expand_prologue (void)
                                     REG_NOTES (insn));
            }
        }
+      /* If the frame pointer is needed, emit a special barrier that
+        will prevent the scheduler from moving stores to the frame
+        before the stack adjustment.  */
+      if (frame_pointer_needed)
+       emit_insn (gen_stack_tie (stack_pointer_rtx,
+                                 hard_frame_pointer_rtx));
     }
   
   if (current_function_profile || TARGET_NO_SCHED_PRO)