I've seen a case when func_id in aux module is not the same (off by
1). This is when -fexception is specified. I had not looked into why
though. I'll find out why it is off-by-1
Dehao
On Wed, May 1, 2013 at 9:57 AM, Xinliang David Li <davi...@google.com> wrote:
> On Tue, Apr 30, 2013 at 4:10 PM, Dehao Chen <de...@google.com> wrote:
>> This patch changes to use context function name to replace function
>> id, which is not available in AutoFDO builds.
>
> Why isn't func_id not available in autofdo builds? The func-id for the
> the same function should remain the same regardless whether the module
> is compiled as an aux module or the primary module.
>
> David
>
>>
>> Bootstrapped and passed regression tests.
>>
>> OK for google branches?
>>
>> Thanks,
>> Dehao
>>
>> Index: gcc/l-ipo.c
>> ===================================================================
>> --- gcc/l-ipo.c (revision 198469)
>> +++ gcc/l-ipo.c (working copy)
>> @@ -1714,9 +1714,10 @@ create_unique_name (tree decl, unsigned module_id)
>> {
>> tree id, assemb_id;
>> char *assembler_name;
>> + const char *context = NULL;
>> const char *name;
>> - struct function *context = NULL;
>> int seq = 0;
>> + int len;
>>
>> if (TREE_CODE (decl) == FUNCTION_DECL)
>> {
>> @@ -1740,7 +1741,8 @@ create_unique_name (tree decl, unsigned module_id)
>> else if (TREE_CODE (DECL_CONTEXT (decl)) == FUNCTION_DECL)
>> {
>> id = DECL_NAME (decl);
>> - context = DECL_STRUCT_FUNCTION (DECL_CONTEXT (decl));
>> + context = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (
>> + DECL_CONTEXT (decl)));
>> }
>> else
>> /* file scope context */
>> @@ -1748,17 +1750,12 @@ create_unique_name (tree decl, unsigned module_id)
>> }
>>
>> name = IDENTIFIER_POINTER (id);
>> + len = strlen (name) + context ? strlen (context) : 0;
>> + assembler_name = (char*) alloca (len + 30);
>> if (context)
>> - {
>> - char *n;
>> - unsigned fno = FUNC_DECL_FUNC_ID (context);
>> - n = (char *)alloca (strlen (name) + 15);
>> - sprintf (n, "%s.%u", name, fno);
>> - name = n;
>> - }
>> -
>> - assembler_name = (char*) alloca (strlen (name) + 30);
>> - sprintf (assembler_name, "%s.cmo.%u", name, module_id);
>> + sprintf (assembler_name, "%s.%s.cmo.%u", context, name, module_id);
>> + else
>> + sprintf (assembler_name, "%s.cmo.%u", name, module_id);
>> seq = get_name_seq_num (assembler_name);
>> if (seq)
>> sprintf (assembler_name, "%s.%d", assembler_name, seq);
