Shrink struct vectorlike_header to the only size field.

* lisp.h (enum pvec_type): Avoid explicit enum member values.
Adjust comment.
(enum More_Lisp_Bits): Change PSEUDOVECTOR_SIZE_BITS and
PVEC_TYPE_MASK to arrange new bitfield in the vector header.
(PSEUDOVECTOR_REST_BITS, PSEUDOVECTOR_REST_MASK): New members.
(PSEUDOVECTOR_AREA_BITS): New member used to extract subtype
information from the vector header.  Adjust comment.
(XSETPVECTYPE, XSETPVECTYPESIZE, XSETTYPED_PSEUDOVECTOR)
(PSEUDOVECTOR_TYPEP, DEFUN): Adjust to match new vector header
layout.
(XSETSUBR, SUBRP): Adjust to match new Lisp_Subr layout.
(struct vectorlike_header): Remove next member.  Adjust comment.
(struct Lisp_Subr): Add convenient header.  Adjust comment.
(allocate_pseudovector): Adjust prototype.
* alloc.c (mark_glyph_matrix, mark_face_cache, allocate_string)
(sweep_string, lisp_malloc): Remove useless prototypes.
(enum mem_type): Adjust comment.
(NEXT_IN_FREE_LIST): New macro.
(SETUP_ON_FREE_LIST): Adjust XSETPVECTYPESIZE usage.
(Fmake_bool_vector): Likewise.
(struct large_vector): New type to represent allocation unit for
the vectors with the memory footprint more than VBLOOCK_BYTES_MAX.
(large_vectors): Change type to struct large_vector.
(allocate_vector_from_block): Simplify.
(PSEUDOVECTOR_NBYTES): Replace with...
(vector_nbytes): ...new function.  Adjust users.
(sweep_vectors): Adjust processing of large vectors.
(allocate_vectorlike): Likewise.
(allocate_pseudovector): Change type of 3rd arg to enum pvec_type.
Add easserts.  Adjust XSETPVECTYPESIZE usage.
(allocate_buffer): Use BUFFER_PVEC_INIT.
(live_vector_p): Adjust to match large vector.
* buffer.c (init_buffer_once): Use BUFFER_PVEC_INIT.
* buffer.h (struct buffer): Add next member.
(BUFFER_LISP_SIZE, BUFFER_REST_SIZE, BUFFER_PVEC_INIT):
New macros.
(FOR_EACH_BUFFER): Adjust to match struct buffer change.
* fns.c (internal_equal): Adjust to match enum pvec_type change.
(copy_hash_table): Adjust to match vector header change.
* lread.c (defsubr): Use XSETPVECTYPE.
* .gdbinit (xpr, xbacktrace): Adjust to match vector header change.
(xvectype): Likewise.  Print PVEC_NORMAL_VECTOR for regular vectors.
(xvecsize): New command.

1 files changed, 21 insertions, 4 deletions

diff --git a/src/.gdbinit b/src/.gdbinit
index 952d7392a4..f187bafcba 100644
--- a/src/.gdbinit
+++ b/src/.gdbinit
@@ -654,13 +654,30 @@ define xvectype
   xgetptr $
   set $size = ((struct Lisp_Vector *) $ptr)->header.size
   if ($size & PSEUDOVECTOR_FLAG)
-    output (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_SIZE_BITS)
+    output (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_AREA_BITS)
   else
-    output $size & ~ARRAY_MARK_FLAG
+    output PVEC_NORMAL_VECTOR
   end
   echo \n
 end
 document xvectype
+Print the type or vector subtype of $.
+This command assumes that $ is a vector or pseudovector.
+end
+
+define xvecsize
+  xgetptr $
+  set $size = ((struct Lisp_Vector *) $ptr)->header.size
+  if ($size & PSEUDOVECTOR_FLAG)
+    output ($size & PSEUDOVECTOR_SIZE_MASK)
+    echo \n
+    output (($size & PSEUDOVECTOR_REST_MASK) >> PSEUDOVECTOR_SIZE_BITS)
+  else
+    output ($size & ~ARRAY_MARK_FLAG)
+  end
+  echo \n
+end
+document xvecsize
 Print the size or vector subtype of $.
 This command assumes that $ is a vector or pseudovector.
 end
@@ -996,7 +1013,7 @@ define xpr
   if $type == Lisp_Vectorlike
     set $size = ((struct Lisp_Vector *) $ptr)->header.size
     if ($size & PSEUDOVECTOR_FLAG)
-      set $vec = (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_SIZE_BITS)
+      set $vec = (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_AREA_BITS)
       if $vec == PVEC_NORMAL_VECTOR
 	xvector
       end
@@ -1132,7 +1149,7 @@ define xbacktrace
 	xgetptr ($bt->function)
         set $size = ((struct Lisp_Vector *) $ptr)->header.size
         if ($size & PSEUDOVECTOR_FLAG)
-	  output (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_SIZE_BITS)
+	  output (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_AREA_BITS)
 	else
 	  output $size & ~ARRAY_MARK_FLAG
 	end