re PR target/39247 (FAIL: gcc.dg/tree-prof/bb-reorg.c compilation, -fprofile-use -D_PROFILE_USE)

	PR target/39247
	* arm.c (arm_override_options): Forcibly disable hot/cold block
	partitioning.

From-SVN: r153018

gcc/ChangeLog

+2009-10-20  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR target/39247
+	* arm.c (arm_override_options): Forcibly disable hot/cold block
+	partitioning.
+
 2009-10-20  Alexandre Oliva  <aoliva@redhat.com>
 
 	PR debug/41739

gcc/config/arm/arm.c

@@ -1864,6 +1864,16 @@ arm_override_options (void)
         max_insns_skipped = 3;
     }
 
+  /* Hot/Cold partitioning is not currently supported, since we can't
+     handle literal pool placement in that case.  */
+  if (flag_reorder_blocks_and_partition)
+    {
+      inform (input_location,
+	      "-freorder-blocks-and-partition not supported on this architecture");
+      flag_reorder_blocks_and_partition = 0;
+      flag_reorder_blocks = 1;
+    }
+
   /* Ideally we would want to use CFI directives to generate
      debug info.  However this also creates the .eh_frame
      section, so disable them until GAS can handle