From: Paul Brook <paul@codesourcery.com>
Date: Mon, 15 Mar 2004 15:30:58 +0000 (+0000)
Subject: * config/arm/arm.c (thumb_expand_prologue): Tie prologue insns to fp.
X-Git-Tag: releases/gcc-4.0.0~9398
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=983e64842fe8236e78dc11f6d0f569a224f0767f;p=thirdparty%2Fgcc.git

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

From-SVN: r79496
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 365cd54814a6..29cc5e4b1301 100644
--- 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 4cada0c10ebc..af59d8328b18 100644
--- 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)