* tree.h (TYPE_CACHED_VALUES_P): New.

	(TYPE_CACHED_VALUES): New.
	(TYPE_ORIG_SIZE_TYPE): Adjust.
	* tree.def (INTEGER_CST): Update documentation.
	* tree.c: Inlcude params.h.
	(build_int_cst): Cache small values.
	(build_type_copy): Do not copy the value cache.
	* c-common.c (c_common_nodes_and_builtins): Add comment, remove
	unneeded zeroing.
	* c-typeck.c (build_c_cast): Add comment about OVERFLOW setting.
	* expmed.c (const_mult_add_overflow_p): Clear type copy's value
	cache.
	* fold-const.c (force_fit_type): Copy value when setting
	overflows.
	(int_const_binop): Likewise.
	* stor-layout.c: Include params.h
	(set_sizetype): Create values cache.
	(fixup_unsigned_type): Set UNSIGNED_P before caching any values.
	* params.def (PARAM_INTEGER_SHARE_LIMIT): New.
	* params.h (INTEGER_SHARE_LIMIT): New.
	* Makefile.in (tree.o, stor-layout.o): Depend on PARAMS_H.

	* cp/decl.c (finish_enum): Do not copy value node early, copy
	later.
	* cp/lex.c (cxx_init): Force null_node to be unique.

	* java/parse.h (JAVA_RADIX10_FLAG): Rename to ...
	(JAVA_NOT_RADIX10_FLAG): ... here.  Invert meaning.
	* java/lex.c (do_java_lex): Adjust.
	(error_if_numeric_overflow): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@86247 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 10 insertions, 1 deletions

diff --git a/gcc/expmed.c b/gcc/expmed.c
index b44ba65e28b..bb24504d27c 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -4550,7 +4550,8 @@ make_tree (tree type, rtx x)
    UNSIGNEDP is nonzero to do unsigned multiplication.  */
 
 bool
-const_mult_add_overflow_p (rtx x, rtx mult, rtx add, enum machine_mode mode, int unsignedp)
+const_mult_add_overflow_p (rtx x, rtx mult, rtx add,
+			   enum machine_mode mode, int unsignedp)
 {
   tree type, mult_type, add_type, result;
 
@@ -4561,7 +4562,15 @@ const_mult_add_overflow_p (rtx x, rtx mult, rtx add, enum machine_mode mode, int
   mult_type = type;
   if (unsignedp)
     {
+      /* FIXME:It would be nice if we could step directly from this
+	 type to its sizetype equivalent.  */
       mult_type = copy_node (type);
+      if (TYPE_CACHED_VALUES_P (mult_type))
+	{
+	  /* Clear any set of cached values it has. */
+	  TYPE_CACHED_VALUES_P (mult_type) = 0;
+	  TYPE_CACHED_VALUES (mult_type) = NULL_TREE;
+	}
       TYPE_IS_SIZETYPE (mult_type) = 1;
     }