Jeff Law <l...@redhat.com> writes:
> On 06/16/2015 02:45 AM, Richard Sandiford wrote:
>> As described in the covering note, this patch replaces handle_cache_entry
>> with a new function keep_cache_entry.  It also ensures that elements are
>> deleted using the proper function, so that m_n_deleted is updated.
>>
>> I couldn't tell whether the unusual name of the function
>> ("gt_cleare_cache") is deliberate or not, but I left it be.
> Short-hand for clear_entry or something similar?

Yeah, could be.

>> gcc/ada/
>>      * gcc-interface/decl.c (value_annotation_hasher::handle_cache_entry):
>>      Delete.
>>      (value_annotation_hasher::keep_cache_entry): New function.
>>      * gcc-interface/utils.c (pad_type_hasher::handle_cache_entry):
>>      Delete.
>>      (pad_type_hasher::keep_cache_entry): New function.
>>
>> gcc/
>>      * hash-table.h (hash_table): Add gt_cleare_cache as a friend.
>>      (gt_cleare_cache): Check here for deleted and empty entries.
>>      Replace handle_cache_entry with a call to keep_cache_entry.
>>      * hash-traits.h (ggc_cache_hasher::handle_cache_entry): Delete.
>>      (ggc_cache_hasher::keep_cache_entry): New function.
>>      * trans-mem.c (tm_wrapper_hasher::handle_cache_entry): Delete.
>>      (tm_wrapper_hasher::keep_cache_entry): New function.
>>      * tree.h (tree_decl_map_cache_hasher::handle_cache_entry): Delete.
>>      (tree_vec_map_cache_hasher::keep_cache_entry): New function.
>>      * tree.c (type_cache_hasher::handle_cache_entry): Delete.
>>      (type_cache_hasher::keep_cache_entry): New function.
>>      (tree_vec_map_cache_hasher::handle_cache_entry): Delete.
>>      (tree_vec_map_cache_hasher::keep_cache_entry): New function.
>>      * ubsan.c (tree_type_map_cache_hasher::handle_cache_entry): Delete.
>>      (tree_type_map_cache_hasher::keep_cache_entry): New function.
>>      * varasm.c (tm_clone_hasher::handle_cache_entry): Delete.
>>      (tm_clone_hasher::keep_cache_entry): New function.
>>      * config/i386/i386.c (dllimport_hasher::handle_cache_entry): Delete.
>>      (dllimport_hasher::keep_cache_entry): New function.
> So for all the keep_cache_entry functions, I guess they're trivial 
> enough that a function comment probably isn't needed.

Yeah.  For cases like this where the function is implementing a defined
interface (described in hash-table.h), I think it's better to only have
comments for implementations that are doing something non-obvious.

> Presumably no good way to share the trivial implementation?

Probably not without sharing the other parts of the traits in some way.
That might be another possible cleanup :-)

Thanks,
Richard

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