[cfe-dev] codegening constants

[Nuno Lopes]

>>>>> I've noticed that currently clang's codegen isn't marking some 
>>>>> consts as
>>>>> llvm constants (e.g. const char[] = "foo").
>>>>> The attached patch fixes just that. As it adds some methods to 
>>>>> QualType and
>>>>> Type classes, I'm sending to the list to get approval before   commit. 
>>>>> So
>>>>> please comment on it! :)
>>>>
>>>> The getAsArrayType* methods were moved to ASTContext for a reason...
>>>> you shouldn't be moving them back.
>>>
>>> Yep, this change should not pass the regression test suite.  Nuno,  did 
>>> you test it?
>>
>> Yes, and it does pass the whole regression test suite (minus one  test 
>> that was already failing).
>
> Ok
>
>> Also, I didn't see any method in ASTContext that is appropriate to  what 
>> I needed. getAsArrayType() in ASTContext are (in my  understanding) to 
>> make new types, not to cast a Type* into an  xxArrayType*.
>
> getAsArrayType can return a different type than passed in.   Specifically, 
> if you ask for the array type of a "const array of int",  you will get 
> back an "array of const int" instead of an "array of int".

>From my quick testing I think I was getting 'correct' results. Anyway I 
include a second patch in attach that uses the methods in ASTContext. (I 
dunno why I missed those on the first time..).
What do you think about this second version?

Nuno 
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