ggc-none.c, [...] (ggc_alloc_obj): Rename it ggc_alloc, drop second argument, never clear returned memory.

toplevel:
	* ggc-none.c, ggc-simple.c, ggc-page.c (ggc_alloc_obj): Rename
	it ggc_alloc, drop second argument, never clear returned memory.
	* ggc-common.c (ggc_alloc_string): Use ggc_alloc.
	(ggc_alloc_cleared): New.
	* ggc.h: Prototype ggc_alloc and ggc_alloc_cleared, not
	ggc_alloc_obj.  Remove ggc_alloc macro.
	(ggc_alloc_rtx, ggc_alloc_rtvec, ggc_alloc_tree): Use ggc_alloc.

	* rtl.c (rtvec_alloc): Clear the vector always.
	(rtx_alloc): Clear the first word always.  Remove dirty
	obstack tricks (this routine is no longer a bottleneck).
	* tree.c (make_node): Clear the new node always.
	(make_tree_vec): Likewise.
	(tree_cons): Clear the common structure always.
	(build1): Likewise; also, clear TREE_COMPLEXITY.
	* gengenrtl.c: Use puts wherever possible.  Remove extra
	newlines.
	(gendef): Clear the first word of an RTX in the generator
	function, irrespective of ggc_p.  Initialize '0' slots to
	NULL.
	(genlegend): Don't generate obstack_alloc_rtx routine, just a
	thin wrapper macro around obstack_alloc.

	* stmt.c (expand_fixup): Use ggc_alloc.
	* c-typeck.c (add_pending_init): Use ggc_alloc.
	* emit-rtl.c (init_emit_once): Clear CONST_DOUBLE_CHAIN(tem).
	* varasm.c (immed_double_const): Set CONST_DOUBLE_MEM(r) to
	const0_rtx when it is created.
	(immed_real_const_1): Set CONST_DOUBLE_CHAIN(r) to NULL_RTX if
	we are not in a function.

	* tree.c (tree_class_check_failed): Make second arg an int.
	* tree.h: Update prototype.

cp:
	* call.c (add_candidate): Use ggc_alloc_cleared.
	* decl.c (lookup_label): Likewise.
	* lex.c (retrofit_lang_decl): Likewise.

From-SVN: r34478

1 files changed, 5 insertions, 7 deletions

diff --git a/gcc/varasm.c b/gcc/varasm.c
index 75af946..d2da769 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -2121,7 +2121,7 @@ immed_double_const (i0, i1, mode)
 
   push_obstacks_nochange ();
   rtl_in_saveable_obstack ();
-  r = gen_rtx_CONST_DOUBLE (mode, NULL_RTX, i0, i1);
+  r = gen_rtx_CONST_DOUBLE (mode, const0_rtx, i0, i1);
   pop_obstacks ();
 
   /* Don't touch const_double_chain if not inside any function.  */
@@ -2131,11 +2131,6 @@ immed_double_const (i0, i1, mode)
       const_double_chain = r;
     }
 
-  /* Store const0_rtx in mem-slot since this CONST_DOUBLE is on the chain.
-     Actual use of mem-slot is only through force_const_mem.  */
-
-  CONST_DOUBLE_MEM (r) = const0_rtx;
-
   return r;
 }
 
@@ -2201,12 +2196,15 @@ immed_real_const_1 (d, mode)
   PUT_MODE (r, mode);
   bcopy ((char *) &u, (char *) &CONST_DOUBLE_LOW (r), sizeof u);
 
-  /* Don't touch const_double_chain if not inside any function.  */
+  /* If we aren't inside a function, don't put r on the
+     const_double_chain.  */
   if (current_function_decl != 0)
     {
       CONST_DOUBLE_CHAIN (r) = const_double_chain;
       const_double_chain = r;
     }
+  else
+    CONST_DOUBLE_CHAIN (r) = NULL_RTX;
 
   /* Store const0_rtx in CONST_DOUBLE_MEM since this CONST_DOUBLE is on the
      chain, but has not been allocated memory.  Actual use of CONST_DOUBLE_MEM