From d2ff90cc580c62afb8528917c1c80ac49d9aaa01 Mon Sep 17 00:00:00 2001
From: kan <kan@FreeBSD.org>
Date: Tue, 14 Aug 2007 02:45:23 +0000
Subject: GCC 4.2.1 release.

---
 contrib/gcc/function.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'contrib/gcc/function.c')

diff --git a/contrib/gcc/function.c b/contrib/gcc/function.c
index 5e43484..ca88e0b 100644
--- a/contrib/gcc/function.c
+++ b/contrib/gcc/function.c
@@ -5076,6 +5076,14 @@ thread_prologue_and_epilogue_insns (rtx f ATTRIBUTE_UNUSED)
       /* Retain a map of the prologue insns.  */
       record_insns (seq, &prologue);
       prologue_end = emit_note (NOTE_INSN_PROLOGUE_END);
+ 
+#ifndef PROFILE_BEFORE_PROLOGUE
+      /* Ensure that instructions are not moved into the prologue when
+	 profiling is on.  The call to the profiling routine can be
+	 emitted within the live range of a call-clobbered register.  */
+      if (current_function_profile)
+	emit_insn (gen_rtx_ASM_INPUT (VOIDmode, ""));
+#endif
 
       seq = get_insns ();
       end_sequence ();
-- 
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