Remove unnecessary VEC function overloads.

Several VEC member functions that accept an element 'T' used to have
two overloads: one taking 'T', the second taking 'T *'.

This used to be needed because of the interface dichotomy between
vectors of objects and vectors of pointers.  In the past, vectors of
pointers would use pass-by-value semantics, but vectors of objects
would use pass-by-reference semantics.  This is no longer necessary,
but the distinction had remained.

The main side-effect of this change is some code reduction in code
that manipulates vectors of objects.  For instance,

-  struct iterator_use *iuse;
-
-  iuse = VEC_safe_push (iterator_use, heap, iterator_uses, NULL);
-  iuse->iterator = iterator;
-  iuse->ptr = ptr;
+  struct iterator_use iuse = {iterator, ptr};
+  VEC_safe_push (iterator_use, heap, iterator_uses, iuse);

Compile time performance was not affected.

Tested on x86_64 and ppc64.

Also built all-gcc on all targets using VEC routines: arm, bfin, c6x,
epiphany, ia64, mips, sh, spu, and vms.

2012-09-10  Diego Novillo  <dnovillo@google.com>

	* vec.h (vec_t::quick_push): Remove overload that accepts 'T *'.
	Update all users.
	(vec_t::safe_push): Likewise.
	(vec_t::quick_insert): Likewise.
	(vec_t::lower_bound): Likewise.
	(vec_t::safe_insert): Likewise.
	(vec_t::replace): Change second argument to 'T &'.

From-SVN: r191165

1 files changed, 4 insertions, 4 deletions

diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c
index e5d17b7..d4c7b1f 100644
--- a/gcc/c/c-decl.c
+++ b/gcc/c/c-decl.c
@@ -6437,7 +6437,7 @@ get_parm_info (bool ellipsis, tree expr)
     {
       tree decl = b->decl;
       tree type = TREE_TYPE (decl);
-      c_arg_tag *tag;
+      c_arg_tag tag;
       const char *keyword;
 
       switch (TREE_CODE (decl))
@@ -6511,9 +6511,9 @@ get_parm_info (bool ellipsis, tree expr)
 		}
 	    }
 
-	  tag = VEC_safe_push (c_arg_tag, gc, tags, NULL);
-	  tag->id = b->id;
-	  tag->type = decl;
+	  tag.id = b->id;
+	  tag.type = decl;
+	  VEC_safe_push (c_arg_tag, gc, tags, tag);
 	  break;
 
 	case CONST_DECL: