[PATCH v1 11/16] Add clone_identifier function.

[Alfie Richards]

This is similar to clone_function_name and its siblings but takes an
identifier tree node rather than a function declaration.

This is to be used in conjunction with the identifier node stored in
cgraph_function_version_info::assembler_name to mangle FMV functions in
later patches.

gcc/ChangeLog:

        * cgraph.h (clone_identifier): New function.
        * cgraphclones.cc (clone_identifier): New function.
        clone_function_name: Refactored to use clone_identifier.
---
 gcc/cgraph.h        |  1 +
 gcc/cgraphclones.cc | 16 ++++++++++------
 2 files changed, 11 insertions(+), 6 deletions(-)


diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index 9561bce2c33..a4eff14ddf6 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -2627,6 +2627,7 @@ tree clone_function_name (const char *name, const char *suffix,
 tree clone_function_name (tree decl, const char *suffix,
 			  unsigned long number);
 tree clone_function_name (tree decl, const char *suffix);
+tree clone_identifier (tree decl, const char *suffix);
 
 void tree_function_versioning (tree, tree, vec<ipa_replace_map *, va_gc> *,
 			       ipa_param_adjustments *,
diff --git a/gcc/cgraphclones.cc b/gcc/cgraphclones.cc
index 5332a433317..6b650849a63 100644
--- a/gcc/cgraphclones.cc
+++ b/gcc/cgraphclones.cc
@@ -557,6 +557,14 @@ clone_function_name (tree decl, const char *suffix)
   /* For consistency this needs to behave the same way as
      ASM_FORMAT_PRIVATE_NAME does, but without the final number
      suffix.  */
+  return clone_identifier (identifier, suffix);
+}
+
+/* Return a new clone of ID ending with the string SUFFIX.  */
+
+tree
+clone_identifier (tree id, const char *suffix)
+{
   char *separator = XALLOCAVEC (char, 2);
   separator[0] = symbol_table::symbol_suffix_separator ();
   separator[1] = 0;
@@ -565,15 +573,11 @@ clone_function_name (tree decl, const char *suffix)
 #else
   const char *prefix = "";
 #endif
-  char *result = ACONCAT ((prefix,
-			   IDENTIFIER_POINTER (identifier),
-			   separator,
-			   suffix,
-			   (char*)0));
+  char *result = ACONCAT (
+    (prefix, IDENTIFIER_POINTER (id), separator, suffix, (char *) 0));
   return get_identifier (result);
 }
 
-
 /* Create callgraph node clone with new declaration.  The actual body will be
    copied later at compilation stage.  The name of the new clone will be
    constructed from the name of the original node, SUFFIX and NUM_SUFFIX.