Thanks Kewen.
Given that background, the patch is OK.
paul
> On Jun 16, 2024, at 10:01 PM, Kewen.Lin <li...@linux.ibm.com> wrote:
>
> Hi Paul,
>
> on 2024/6/14 23:20, Paul Koning wrote:
>> Ok, I understand better now. But if those macros are supposed to be
>> replaced by hook functions, could you make that replacement part of the
>> proposed patch?
>
> The default implementation of the introduced hook mode_for_floating_type
> returns SFmode for float and DFmode for double or long double, which matches
> what pdp11 port requires, so there is no need to add its own hook
> implementation.
> This patch series only re-define this hook macro with the customized hook
> implementation for those ports which need something beyond the default.
>
> BR,
> Kewen
>
>>
>> paul
>>
>>> On Jun 13, 2024, at 11:22 PM, Kewen.Lin <li...@linux.ibm.com> wrote:
>>>
>>> Hi Paul,
>>>
>>> on 2024/6/14 04:07, Paul Koning wrote:
>>>> What is the effect of this change? The original code intended to have
>>>> "float" mean a 32 bit value, and "double" a 64 bit value. There aren't
>>>> any larger floats, so I defined the long double size as 64 also. Is the
>>>> right answer not to define it?
>>>
>>> Since sub-patch 09/52 will poison {FLOAT,DOUBLE,LONG_DOUBLE}_TYPE_SIZE,
>>> target code building will fail
>>> if it still has these macros. As I'd like to squash these target changes
>>> onto 09/52, so I didn't note
>>> the background/context here, sorry about that.
>>>
>>>>
>>>> That part I understand, but why does the patch also remove FLOAT_TYPE_SIZE
>>>> and DOUBLE_TYPE_SIZE without explanation and without mention in the
>>>> changelog?
>>>
>>> Oops, thanks for catching! I just noticed this sub-patch has inconsistent
>>> subject & changelog, I should
>>> have noticed this as it has a quite different subject from the others. :(
>>> With your finding, I just
>>> re-visited all the other sub-patches, luckily they are consistent.
>>>
>>> The below is the updated revision, hope it looks good to you. Thanks again.
>>>
>>> BR,
>>> Kewen
>>> -----
>>>
>>> Subject: [PATCH] pdp11: Remove macro {FLOAT,DOUBLE,LONG_DOUBLE}_TYPE_SIZE
>>>
>>> This is to remove macros {FLOAT,{,LONG_}DOUBLE}_TYPE_SIZE
>>> defines in pdp11 port, as we want to replace these macros
>>> with hook mode_for_floating_type and poison them.
>>>
>>> gcc/ChangeLog:
>>>
>>> * config/pdp11/pdp11.h (FLOAT_TYPE_SIZE): Remove.
>>> (DOUBLE_TYPE_SIZE): Likewise.
>>> (LONG_DOUBLE_TYPE_SIZE): Likewise.
>>> ---
>>> gcc/config/pdp11/pdp11.h | 11 -----------
>>> 1 file changed, 11 deletions(-)
>>>
>>> diff --git a/gcc/config/pdp11/pdp11.h b/gcc/config/pdp11/pdp11.h
>>> index 2446fea0b58..6c8e045bc57 100644
>>> --- a/gcc/config/pdp11/pdp11.h
>>> +++ b/gcc/config/pdp11/pdp11.h
>>> @@ -71,17 +71,6 @@ along with GCC; see the file COPYING3. If not see
>>> #define LONG_TYPE_SIZE 32
>>> #define LONG_LONG_TYPE_SIZE 64
>>>
>>> -/* In earlier versions, FLOAT_TYPE_SIZE was selectable as 32 or 64,
>>> - but that conflicts with Fortran language rules. Since there is no
>>> - obvious reason why we should have that feature -- other targets
>>> - generally don't have float and double the same size -- I've removed
>>> - it. Note that it continues to be true (for now) that arithmetic is
>>> - always done with 64-bit values, i.e., the FPU is always in "double"
>>> - mode. */
>>> -#define FLOAT_TYPE_SIZE 32
>>> -#define DOUBLE_TYPE_SIZE 64
>>> -#define LONG_DOUBLE_TYPE_SIZE 64
>>> -
>>> /* machine types from ansi */
>>> #define SIZE_TYPE "short unsigned int" /* definition of size_t */
>>> #define WCHAR_TYPE "short int" /* or long int???? */
>>> --
>>> 2.43.0
>>>
>>>
>>
>
