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Re: [gimplefe] Regarding command line option handling


On 6 May 2016 at 16:09, Richard Biener <richard.guenther@gmail.com> wrote:
> On Wed, May 4, 2016 at 4:29 PM, Prasad Ghangal <prasad.ghangal@gmail.com> wrote:
>> On 4 May 2016 at 15:54, Richard Biener <richard.guenther@gmail.com> wrote:
>>> On Wed, May 4, 2016 at 11:46 AM, Prasad Ghangal
>>> <prasad.ghangal@gmail.com> wrote:
>>>> On 4 May 2016 at 13:02, Richard Biener <richard.guenther@gmail.com> wrote:
>>>>> On Wed, May 4, 2016 at 8:41 AM, Prasad Ghangal <prasad.ghangal@gmail.com> wrote:
>>>>>> Hi !
>>>>>> Currently I am trying to introduce new command line option -fgimple,
>>>>>> for that I am adding this to c.opt
>>>>>>
>>>>>> diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
>>>>>> index 4f86876..88e55c6 100644
>>>>>> --- a/gcc/c-family/c.opt
>>>>>> +++ b/gcc/c-family/c.opt
>>>>>> @@ -66,6 +66,10 @@ C ObjC C++ ObjC++ Separate Alias(d)
>>>>>>  -dump=
>>>>>>  C ObjC C++ ObjC++ Joined Alias(d)
>>>>>>
>>>>>> +fgimple
>>>>>> +C Var(flag_gimple) Init(0)
>>>>>> +Enable parsing GIMPLE
>>>>>> +
>>>>>>  -imacros
>>>>>>  C ObjC C++ ObjC++ Separate Alias(imacros) MissingArgError(missing
>>>>>> filename after %qs)
>>>>>>
>>>>>>
>>>>>> But I am getting error as - "gcc: error: unrecognized command line
>>>>>> option â-fgimple â; did you mean â-fgimple â?"
>>>>>>
>>>>>> I am unable to find where to handle it.
>>>>>
>>>>> Did you properly re-build gcc after that change?  It should work just fine.
>>>>>
>>>>> Richard.
>>>>>
>>>>
>>>> Yes, I did stage 1 build on latest revision. Still it's giving this
>>>> strange error - "gcc: error: unrecognized command line option
>>>> â-fgimpleâ; did you mean â-fgimpleâ?"
>>>
>>> The error is indeed strage.  W/o the patch I get
>>>
>>>> ./xgcc -B. -fgimple -S t.i
>>> xgcc: error: unrecognized command line option '-fgimple'; did you mean
>>> '--compile'?
>>>
>>> and with it (re-building cc1 and xgcc inside gcc/ of my dev-tree)
>>>
>>>> ./xgcc -B. -fgimple -S t.i
>>> (no error)
>>>
>>> so it works fine for me.  Note that 'gcc' inside the build tree is called xgcc.
>>>
>>
>> Yes, it works for $build/gcc/cc1 but not for $prefix/bin/gcc i.e.
>> after installing
>
> Does it work for $build/gcc/xgcc?
>

No. It doesn't work for me. I even tried bootstrapped build-install,
still same issue.

> Richard.
>
>>> Richard.
>>>
>>>
>>>>
>>>>>>
>>>>>>
>>>>>> Till now I am able to JUST parse __GIMPLE keyword
>>>>>>
>>>>>> diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c
>>>>>> index cae2faf..1ccb4d6 100644
>>>>>> --- a/gcc/c-family/c-common.c
>>>>>> +++ b/gcc/c-family/c-common.c
>>>>>> @@ -468,6 +468,7 @@ const struct c_common_resword c_common_reswords[] =
>>>>>>    { "__extension__",    RID_EXTENSION,    0 },
>>>>>>    { "__func__",        RID_C99_FUNCTION_NAME, 0 },
>>>>>>    { "__has_nothrow_assign", RID_HAS_NOTHROW_ASSIGN, D_CXXONLY },
>>>>>> +  { "__GIMPLE",        RID_GIMPLE,    0 },
>>>>>>    { "__has_nothrow_constructor", RID_HAS_NOTHROW_CONSTRUCTOR, D_CXXONLY },
>>>>>>    { "__has_nothrow_copy", RID_HAS_NOTHROW_COPY, D_CXXONLY },
>>>>>>    { "__has_trivial_assign", RID_HAS_TRIVIAL_ASSIGN, D_CXXONLY },
>>>>>> @@ -12393,6 +12394,7 @@ keyword_is_function_specifier (enum rid keyword)
>>>>>>      case RID_NORETURN:
>>>>>>      case RID_VIRTUAL:
>>>>>>      case RID_EXPLICIT:
>>>>>> +    case RID_GIMPLE:
>>>>>>        return true;
>>>>>>      default:
>>>>>>        return false;
>>>>>> diff --git a/gcc/c-family/c-common.h b/gcc/c-family/c-common.h
>>>>>> index 663e457..a91665f 100644
>>>>>> --- a/gcc/c-family/c-common.h
>>>>>> +++ b/gcc/c-family/c-common.h
>>>>>> @@ -64,10 +64,10 @@ enum rid
>>>>>>    /* Modifiers: */
>>>>>>    /* C, in empirical order of frequency.  */
>>>>>>    RID_STATIC = 0,
>>>>>> -  RID_UNSIGNED, RID_LONG,    RID_CONST, RID_EXTERN,
>>>>>> -  RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
>>>>>> -  RID_VOLATILE, RID_SIGNED,  RID_AUTO,  RID_RESTRICT,
>>>>>> -  RID_NORETURN, RID_ATOMIC,
>>>>>> +  RID_UNSIGNED, RID_LONG,     RID_CONST,   RID_EXTERN,
>>>>>> +  RID_GIMPLE,    RID_REGISTER, RID_TYPEDEF, RID_SHORT,
>>>>>> +  RID_INLINE,    RID_VOLATILE, RID_SIGNED,  RID_AUTO,
>>>>>> +  RID_RESTRICT, RID_NORETURN, RID_ATOMIC,
>>>>>>
>>>>>>    /* C extensions */
>>>>>>    RID_COMPLEX, RID_THREAD, RID_SAT,
>>>>>> diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c
>>>>>> index f0c677b..e690ca3 100644
>>>>>> --- a/gcc/c/c-decl.c
>>>>>> +++ b/gcc/c/c-decl.c
>>>>>> @@ -10401,6 +10401,8 @@ declspecs_add_scspec (source_location loc,
>>>>>>      case RID_TYPEDEF:
>>>>>>        n = csc_typedef;
>>>>>>        break;
>>>>>> +    case RID_GIMPLE:
>>>>>> +      break;
>>>>>>      default:
>>>>>>        gcc_unreachable ();
>>>>>>      }
>>>>>> diff --git a/gcc/c/c-parser.c b/gcc/c/c-parser.c
>>>>>> index bdd669d..266b672 100644
>>>>>> --- a/gcc/c/c-parser.c
>>>>>> +++ b/gcc/c/c-parser.c
>>>>>> @@ -732,6 +732,7 @@ c_token_starts_declspecs (c_token *token)
>>>>>>      case RID_ALIGNAS:
>>>>>>      case RID_ATOMIC:
>>>>>>      case RID_AUTO_TYPE:
>>>>>> +    case RID_GIMPLE:
>>>>>>        return true;
>>>>>>      default:
>>>>>>        if (token->keyword >= RID_FIRST_INT_N
>>>>>> @@ -2461,6 +2462,7 @@ c_parser_declspecs (c_parser *parser, struct
>>>>>> c_declspecs *specs,
>>>>>>      case RID_NORETURN:
>>>>>>      case RID_AUTO:
>>>>>>      case RID_THREAD:
>>>>>> +    case RID_GIMPLE:
>>>>>>        if (!scspec_ok)
>>>>>>          goto out;
>>>>>>        attrs_ok = true;
>>>>>> @@ -3960,6 +3962,7 @@ c_parser_attribute_any_word (c_parser *parser)
>>>>>>      case RID_INT_N_1:
>>>>>>      case RID_INT_N_2:
>>>>>>      case RID_INT_N_3:
>>>>>> +    case RID_GIMPLE:
>>>>>>        ok = true;
>>>>>>        break;
>>>>>>      default:
>>>>>>
>>>>>>
>>>>>>
>>>>>> After recognizing __GIMPLE, I am planning to call gimple_fn_parser
>>>>>> function which will parse gimple body.
>>>>>> For pass manager, basic idea is to introduce new member to struct
>>>>>> function as pass_list and modify function execute_pass_list to run
>>>>>> only passes in pass list.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Thanks,
>>>>>> Prasad Ghangal


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