diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4a40d27b431..de5393a26dd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2014-04-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* explow.c (probe_stack_range): Emit a final optimization blockage.
+
 2014-04-04  Anthony Green  <green@moxielogic.com>
 
 	* config/moxie/moxie.md (zero_extendqisi2, zero_extendhisi2): Fix
diff --git a/gcc/explow.c b/gcc/explow.c
index 4e2f70448fb..48e91a6444b 100644
--- a/gcc/explow.c
+++ b/gcc/explow.c
@@ -1729,6 +1729,9 @@ probe_stack_range (HOST_WIDE_INT first, rtx size)
 	  emit_stack_probe (addr);
 	}
     }
+
+  /* Make sure nothing is scheduled before we are done.  */
+  emit_insn (gen_blockage ());
 }
 
 /* Adjust the stack pointer by minus SIZE (an rtx for a number of bytes)