Use 'location_hash' for 'gcc/diagnostic-spec.h:nowarn_map' (was: [PATCH 1/13] v2 [PATCH 1/13] Add support for per-location warning groups (PR 74765))
Commit Message
Hi!
On 2021-09-03T21:16:46+0200, I wrote:
> On 2021-09-01T18:14:46-0600, Martin Sebor <msebor@gmail.com> wrote:
>> On 9/1/21 1:35 PM, Thomas Schwinge wrote:
>>> On 2021-06-23T13:47:08-0600, Martin Sebor via Gcc-patches <gcc-patches@gcc.gnu.org> wrote:
>>>> --- /dev/null
>>>> +++ b/gcc/diagnostic-spec.h
>>>
>>>> +typedef location_t key_type_t;
>>>> +typedef int_hash <key_type_t, 0, UINT_MAX> xint_hash_t;
>
>> By the way, it seems we should probably also use a manifest constant
>> for Empty (probably UNKNOWN_LOCATION since we're reserving it).
>
> Yes, that will be part of another patch here -- waiting for approval of
> "Generalize 'gcc/input.h:struct location_hash'" posted elsewhere.
... which I have now pushed, so I may now propose the attached patch to
"Use 'location_hash' for 'gcc/diagnostic-spec.h:nowarn_map'". OK to
push?
Grüße
Thomas
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From d346292fc95f1990abbc9f6a4a8eb89be0f0e88d Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <thomas@codesourcery.com>
Date: Tue, 31 Aug 2021 23:35:15 +0200
Subject: [PATCH] Use 'location_hash' for 'gcc/diagnostic-spec.h:nowarn_map'
Instead of hard-coded '0'/'UINT_MAX', we now use the 'RESERVED_LOCATION_P'
values 'UNKNOWN_LOCATION'/'BUILTINS_LOCATION' as spare values for
'Empty'/'Deleted', and generally simplify the code.
gcc/
* diagnostic-spec.h (typedef xint_hash_t)
(typedef xint_hash_map_t): Replace with...
(typedef nowarn_map_t): ... this.
(nowarn_map): Adjust.
* diagnostic-spec.c (nowarn_map, suppress_warning_at): Likewise.
---
gcc/diagnostic-spec.c | 4 ++--
gcc/diagnostic-spec.h | 9 ++-------
2 files changed, 4 insertions(+), 9 deletions(-)
@@ -107,7 +107,7 @@ nowarn_spec_t::nowarn_spec_t (opt_code opt)
/* A mapping from a 'location_t' to the warning spec set for it. */
-GTY(()) xint_hash_map_t *nowarn_map;
+GTY(()) nowarn_map_t *nowarn_map;
/* Return the no-warning disposition for location LOC and option OPT
or for all/any otions by default. */
@@ -163,7 +163,7 @@ suppress_warning_at (location_t loc, opt_code opt /* = all_warnings */,
return false;
if (!nowarn_map)
- nowarn_map = xint_hash_map_t::create_ggc (32);
+ nowarn_map = nowarn_map_t::create_ggc (32);
nowarn_map->put (loc, optspec);
return true;
@@ -130,14 +130,9 @@ operator!= (const nowarn_spec_t &lhs, const nowarn_spec_t &rhs)
return !(lhs == rhs);
}
-/* Per PR103157 "'gengtype': 'typedef' causing infinite-recursion code to be
- generated", don't use
- typedef int_hash<location_t, 0, UINT_MAX> xint_hash_t;
- here. */
-struct xint_hash_t : int_hash<location_t, 0, UINT_MAX> {};
-typedef hash_map<xint_hash_t, nowarn_spec_t> xint_hash_map_t;
+typedef hash_map<location_hash, nowarn_spec_t> nowarn_map_t;
/* A mapping from a 'location_t' to the warning spec set for it. */
-extern GTY(()) xint_hash_map_t *nowarn_map;
+extern GTY(()) nowarn_map_t *nowarn_map;
#endif // DIAGNOSTIC_SPEC_H_INCLUDED
--
2.33.0