From patchwork Mon Nov  5 04:04:00 2012
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Subject: Using -ffunction-sections and -p
Date: Sun, 04 Nov 2012 18:04:00 -0000
From: Sriraman Tallam <tmsriram@google.com>
X-Patchwork-Id: 197134
Message-Id: <CAAs8HmxNf-V7AuTRPKtK7du73hKQ--0=9fW4tVk3LoLFioE4pg@mail.gmail.com>
To: GCC Patches <gcc-patches@gcc.gnu.org>, Ian Lance Taylor <iant@google.com>, 
 David Li <davidxl@google.com>, gcc@gcc.gnu.org

Hi,

   Currently, using -ffunction-sections and -p together results in a
warning. I ran into this problem when compiling the kernel. This is
discussed in this thread:

http://gcc.gnu.org/ml/gcc-help/2008-11/msg00128.html

Ian's reply suggests this warning is no longer necessary and can be
removed. Is this patch alright to commit with all tests passing:

        * toplev.c (process_options): Do not warn when -ffunction-sections
          and -fprofile are used together.

     {



Thanks,
-Sri.


--- toplev.c (revision 193117)
+++ toplev.c (working copy)
@@ -1467,12 +1467,6 @@ process_options (void)
  }
     }

-  if (flag_function_sections && profile_flag)
-    {
-      warning (0, "-ffunction-sections disabled; it makes profiling
impossible");
-      flag_function_sections = 0;
-    }
-
 #ifndef HAVE_prefetch
   if (flag_prefetch_loop_arrays > 0)