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, 2 insertions, 5 deletions

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index c125019..a5a3848 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -24901,11 +24901,8 @@ static void
 add_compiler_branch_island (tree label_name, tree function_name,
 			    int line_number)
 {
-  branch_island *bi = VEC_safe_push (branch_island, gc, branch_islands, NULL);
-
-  bi->function_name = function_name;
-  bi->label_name = label_name;
-  bi->line_number = line_number;
+  branch_island bi = {function_name, label_name, line_number};
+  VEC_safe_push (branch_island, gc, branch_islands, bi);
 }
 
 /* Generate far-jump branch islands for everything recorded in