Interprocedural constant propagation.

From-SVN: r102626

gcc/timevar.def

@@ -42,6 +42,7 @@ DEFTIMEVAR (TV_DUMP                  , "dump files")
 
 DEFTIMEVAR (TV_CGRAPH                , "callgraph construction")
 DEFTIMEVAR (TV_CGRAPHOPT             , "callgraph optimization")
+DEFTIMEVAR (TV_IPA_CONSTANT_PROP     , "ipa cp")
 DEFTIMEVAR (TV_IPA_REFERENCE         , "ipa reference")
 DEFTIMEVAR (TV_IPA_PURE_CONST        , "ipa pure const")
 DEFTIMEVAR (TV_IPA_TYPE_ESCAPE       , "ipa type escape")

gcc/tree-inline.h

@@ -22,6 +22,7 @@ Boston, MA 02110-1301, USA.  */
 #ifndef GCC_TREE_INLINE_H
 #define GCC_TREE_INLINE_H
 
+#include "varray.h"
 /* Function prototypes.  */
 
 void optimize_inline_calls (tree);
@@ -33,6 +34,12 @@ int estimate_move_cost (tree type);
 void push_cfun (struct function *new_cfun);
 void pop_cfun (void);
 int estimate_num_insns (tree expr);
+bool tree_versionable_function_p (tree);
+void tree_function_versioning (tree, tree, varray_type);
+
+/* Copy a declaration when one function is substituted inline into
+   another.  It is used also for versioning.  */
+extern tree copy_decl_for_dup (tree, tree, tree, bool);
 
 /* 0 if we should not perform inlining.
    1 if we should expand functions calls inline at the tree level.

gcc/tree-pass.h

@@ -284,6 +284,7 @@ extern struct tree_opt_pass pass_rebuild_cgraph_edges;
 extern struct tree_opt_pass pass_eliminate_useless_stores;
 
 /* IPA Passes */
+extern struct tree_opt_pass pass_ipa_cp;
 extern struct tree_opt_pass pass_ipa_inline;
 extern struct tree_opt_pass pass_early_ipa_inline;
 extern struct tree_opt_pass pass_ipa_reference;