2006-05-04 Leehod Baruch <leehod@il.ibm.com>

        * see.c: New file.
        * Makefile.in (OBJS-common): Add see.o.
        (see.o): Add dependencies.
        * common.opt (fsee): New flag for the see optimization was added.
        * opts.c (flag_see): Initialized.
        * passes.c (init_optimization_passes, pass_see): New pass.
        * rtl.h (see_main): Declaration as extern.
        * timevar.def (TV_SEE): New.
        * tree-pass.h (pass_see): Declaration as extern.
        * invoke.texi (-fsee): Document.
        * recog.c (validate_simplify_insn): New function.
        * recog.h (validate_simplify_insn): Declaration as extern.
        * df-problems.c (df_chain_dump): Check for NULL.

2006-05-04  Kenneth Zadeck <zadeck@naturalbridge.com>
            Daniel Berlin  <dberlin@dberlin.org>

        * cfgrtl.c (insert_insn_bb_end_new): New function.
        * basic-block.h (insert_insn_bb_end_new): Declaration as extern.

2006-05-04  Leehod Baruch  <leehod.baruch@weizmann.ac.il>

        * df.h (struct web_entry): Moved from web.c.
        (union_defs): Declaration as extern.
        (unionfind_root): Likewise.
        (unionfind_union): Likewise.
        * web.c (struct web_entry): Moved to df.h.
        (unionfind_root): Remove static declaration.
        (unionfind_union): Likewise.
        (union_defs): Likewise and generalize to use callback function.
        (web_main): Update arguments for union_defs function call.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@113518 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 19 insertions, 0 deletions

diff --git a/gcc/df.h b/gcc/df.h
index 720bbfadece..3a735aedd05 100644
--- a/gcc/df.h
+++ b/gcc/df.h
@@ -593,4 +593,23 @@ extern void df_hard_reg_init (void);
 extern bool df_read_modify_subreg_p (rtx);
 
 
+/* web */
+
+/* This entry is allocated for each reference in the insn stream.  */
+struct web_entry
+{
+  /* Pointer to the parent in the union/find tree.  */
+  struct web_entry *pred;
+  /* Newly assigned register to the entry.  Set only for roots.  */
+  rtx reg;
+  void* extra_info;
+};
+
+extern struct web_entry *unionfind_root (struct web_entry *);
+extern bool unionfind_union (struct web_entry *, struct web_entry *);
+extern void union_defs (struct df *, struct df_ref *,
+                        struct web_entry *, struct web_entry *,
+			bool (*fun) (struct web_entry *, struct web_entry *));
+
+
 #endif /* GCC_DF_H */