[binutils-gdb] Rewrite new die_info methods

[Tom Tromey <tromey@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=eeb647814fbfd71dddea45f36cb4847341f5cde7

commit eeb647814fbfd71dddea45f36cb4847341f5cde7
Author: Tom Tromey <tom@tromey.com>
Date:   Thu Mar 26 09:28:08 2020 -0600

    Rewrite new die_info methods
    
    This rewrites the two new die_info methods to iterate over attributes
    rather than to do two separate searches.
    
    gdb/ChangeLog
    2020-03-26  Tom Tromey  <tom@tromey.com>
    
            * dwarf2/die.h (struct die_info) <addr_base, ranges_base>:
            Rewrite.

Diff:
---
 gdb/ChangeLog    |  5 +++++
 gdb/dwarf2/die.h | 28 ++++++++++++++++------------
 2 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index b8190a1381e..670f7f6c25b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-26  Tom Tromey  <tom@tromey.com>
+
+	* dwarf2/die.h (struct die_info) <addr_base, ranges_base>:
+	Rewrite.
+
 2020-03-26  Tom Tromey  <tom@tromey.com>
 
 	* dwarf2/die.h (struct die_info) <addr_base, ranges_base>: New
diff --git a/gdb/dwarf2/die.h b/gdb/dwarf2/die.h
index c3586645bd6..5522ebdf311 100644
--- a/gdb/dwarf2/die.h
+++ b/gdb/dwarf2/die.h
@@ -38,12 +38,14 @@ struct die_info
      DW_AT_addr_base.  */
   gdb::optional<ULONGEST> addr_base ()
   {
-    struct attribute *attr = this->attr (DW_AT_addr_base);
-    if (attr == nullptr)
-      attr = this->attr (DW_AT_GNU_addr_base);
-    if (attr == nullptr)
-      return gdb::optional<ULONGEST> ();
-    return DW_UNSND (attr);
+    for (unsigned i = 0; i < num_attrs; ++i)
+      if (attrs[i].name == DW_AT_addr_base
+	  || attrs[i].name == DW_AT_GNU_addr_base)
+	{
+	  /* If both exist, just use the first one.  */
+	  return DW_UNSND (&attrs[i]);
+	}
+    return gdb::optional<ULONGEST> ();
   }
 
   /* Return range lists base of the compile unit, which, if exists, is
@@ -51,12 +53,14 @@ struct die_info
      DW_AT_GNU_ranges_base.  */
   ULONGEST ranges_base ()
   {
-    struct attribute *attr = this->attr (DW_AT_rnglists_base);
-    if (attr == nullptr)
-      attr = this->attr (DW_AT_GNU_ranges_base);
-    if (attr == nullptr)
-      return 0;
-    return DW_UNSND (attr);
+    for (unsigned i = 0; i < num_attrs; ++i)
+      if (attrs[i].name == DW_AT_rnglists_base
+	  || attrs[i].name == DW_AT_GNU_ranges_base)
+	{
+	  /* If both exist, just use the first one.  */
+	  return DW_UNSND (&attrs[i]);
+	}
+    return 0;
   }