From: Jan Beulich <jbeulich@suse.com>
To: Binutils <binutils@sourceware.org>
Cc: "H.J. Lu" <hjl.tools@gmail.com>
Subject: [PATCH v3 5/6] x86: drop sentinel from i386_optab[]
Date: Mon, 28 Nov 2022 12:32:40 +0100 [thread overview]
Message-ID: <414cbe39-9398-ddab-97f2-93d6c0bf9852@suse.com> (raw)
In-Reply-To: <8f385c36-cfe5-1b0a-45b6-ea6c008b20c8@suse.com>
Now that the table is local to gas, ARRAY_SIZE() can be used to
determine the end of the table. Re-arrange the processing loop in
md_begin() accordingly, at the same time folding the two calls to
notes_alloc() into just one.
---
v2: New.
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -2977,31 +2977,20 @@ md_begin (void)
op_hash = str_htab_create ();
{
- const insn_template *optab;
- templates *core_optab;
+ const insn_template *optab = i386_optab;
+ const insn_template *end = optab + ARRAY_SIZE (i386_optab);
- /* Setup for loop. */
- optab = i386_optab;
- core_optab = notes_alloc (sizeof (*core_optab));
- core_optab->start = optab;
-
- while (1)
+ while (optab < end)
{
- ++optab;
- if (optab->name == NULL
- || strcmp (optab->name, (optab - 1)->name) != 0)
- {
- /* different name --> ship out current template list;
- add to hash table; & begin anew. */
- core_optab->end = optab;
- if (str_hash_insert (op_hash, (optab - 1)->name, core_optab, 0))
- as_fatal (_("duplicate %s"), (optab - 1)->name);
+ templates *core_optab = notes_alloc (sizeof (*core_optab));
- if (optab->name == NULL)
- break;
- core_optab = notes_alloc (sizeof (*core_optab));
- core_optab->start = optab;
- }
+ core_optab->start = optab;
+ while (++optab < end)
+ if (strcmp (optab->name, optab[-1].name) != 0)
+ break;
+ core_optab->end = optab;
+ if (str_hash_insert (op_hash, optab[-1].name, core_optab, 0))
+ as_fatal (_("duplicate %s"), optab[-1].name);
}
}
--- a/opcodes/i386-gen.c
+++ b/opcodes/i386-gen.c
@@ -1915,16 +1915,6 @@ process_i386_opcodes (FILE *table)
fclose (fp);
- fprintf (table, " { NULL, 0, 0, 0,\n");
-
- process_i386_opcode_modifier (table, "0", 0, 0, NULL, -1);
-
- process_i386_cpu_flag (table, "0", 0, ",", " ", -1);
-
- fprintf (table, " { ");
- process_i386_operand_type (table, "0", stage_opcodes, "\t ", -1);
- fprintf (table, " } }\n");
-
fprintf (table, "};\n");
}
next prev parent reply other threads:[~2022-11-28 11:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-28 11:29 [PATCH v3 0/6] x86: break gas dependency on libopcodes Jan Beulich
2022-11-28 11:30 ` [PATCH v3 1/6] x86: instantiate i386_{op,reg}tab[] in gas instead of in libopcodes Jan Beulich
2022-11-28 11:31 ` [PATCH v3 2/6] x86: remove i386-opc.c Jan Beulich
2022-11-28 11:31 ` [PATCH v3 3/6] x86: break gas dependency on libopcodes Jan Beulich
2022-11-28 11:32 ` [PATCH v3 4/6] x86: add generated tables dependency check to gas Jan Beulich
2022-11-28 11:32 ` Jan Beulich [this message]
2022-11-28 11:33 ` [PATCH v3 6/6] x86: generate template sets data at build time Jan Beulich
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