[binutils-gdb] gdb/gdbarch: remove the predicate function for gdbarch_register_type

[binutils-gdb] gdb/gdbarch: remove the predicate function for gdbarch_register_type

[Andrew Burgess]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=23bade95de322dead7fbd33368dce271c2911773

commit 23bade95de322dead7fbd33368dce271c2911773
Author: Andrew Burgess <aburgess@redhat.com>
Date:   Thu Mar 10 10:57:18 2022 +0000

    gdb/gdbarch: remove the predicate function for gdbarch_register_type
    
    I don't believe that the gdbarch_register_type_p predicate is called
    anywhere in GDB, and the gdbarch_register_type function is called
    without checking the gdbarch_register_type_p predicate function
    everywhere it is used, for example in
    init_regcache_descr (regcache.c).
    
    My claim is that the gdbarch_register_type function is required for
    every architecture, and GDB will not work if this function is not
    supplied.
    
    And so, in this commit, I remove the 'predicate=True' from
    gdbarch-components.py for the 'register_type' field, and regenerate
    the gdbarch files.
    
    There should be no user visible changes after this commit.

Diff:
---
 gdb/gdbarch-components.py |  1 -
 gdb/gdbarch-gen.h         |  2 --
 gdb/gdbarch.c             | 11 -----------
 3 files changed, 14 deletions(-)

diff --git a/gdb/gdbarch-components.py b/gdb/gdbarch-components.py
index bc09d35f9de..aa0b3682593 100644
--- a/gdb/gdbarch-components.py
+++ b/gdb/gdbarch-components.py
@@ -574,7 +574,6 @@ use "register_type".
     type="struct type *",
     name="register_type",
     params=[("int", "reg_nr")],
-    predicate=True,
     invalid=True,
 )
 
diff --git a/gdb/gdbarch-gen.h b/gdb/gdbarch-gen.h
index b7beb73d36d..7a8721328ab 100644
--- a/gdb/gdbarch-gen.h
+++ b/gdb/gdbarch-gen.h
@@ -296,8 +296,6 @@ extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register
    the register cache should call this function directly; others should
    use "register_type". */
 
-extern bool gdbarch_register_type_p (struct gdbarch *gdbarch);
-
 typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr);
 extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr);
 extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type);
diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c
index 55dd602b27f..28e1fbc2c71 100644
--- a/gdb/gdbarch.c
+++ b/gdb/gdbarch.c
@@ -443,7 +443,6 @@ verify_gdbarch (struct gdbarch *gdbarch)
   /* Skip verify of dwarf2_reg_to_regnum, invalid_p == 0 */
   if (gdbarch->register_name == 0)
     log.puts ("\n\tregister_name");
-  /* Skip verify of register_type, has predicate.  */
   /* Skip verify of dummy_id, invalid_p == 0 */
   /* Skip verify of deprecated_fp_regnum, invalid_p == 0 */
   /* Skip verify of push_dummy_call, has predicate.  */
@@ -780,9 +779,6 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
   fprintf_filtered (file,
                       "gdbarch_dump: register_name = <%s>\n",
                       host_address_to_string (gdbarch->register_name));
-  fprintf_filtered (file,
-                      "gdbarch_dump: gdbarch_register_type_p() = %d\n",
-                      gdbarch_register_type_p (gdbarch));
   fprintf_filtered (file,
                       "gdbarch_dump: register_type = <%s>\n",
                       host_address_to_string (gdbarch->register_type));
@@ -2219,13 +2215,6 @@ set_gdbarch_register_name (struct gdbarch *gdbarch,
   gdbarch->register_name = register_name;
 }
 
-bool
-gdbarch_register_type_p (struct gdbarch *gdbarch)
-{
-  gdb_assert (gdbarch != NULL);
-  return gdbarch->register_type != NULL;
-}
-
 struct type *
 gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr)
 {