Sync down FSF r184235@google/gcc-4_6_2-mobile branch

1) Get mostly new patches from FSF gcc-4.6 branch
2) Fix PR52129
3) Insert GNU-stack note for all ARM targets

Change-Id: I2b9926981210e517e4021242908074319a91d6bd

1 files changed, 54 insertions, 3 deletions

diff --git a/gcc-4.6/libiberty/cp-demangle.c b/gcc-4.6/libiberty/cp-demangle.c
index 7e951cc..179197c 100644
--- a/gcc-4.6/libiberty/cp-demangle.c
+++ b/gcc-4.6/libiberty/cp-demangle.c
@@ -419,6 +419,9 @@ static struct demangle_component *d_lambda (struct d_info *);
 
 static struct demangle_component *d_unnamed_type (struct d_info *);
 
+static struct demangle_component *
+d_clone_suffix (struct d_info *, struct demangle_component *);
+
 static int
 d_add_substitution (struct d_info *, struct demangle_component *);
 
@@ -804,6 +807,7 @@ d_make_comp (struct d_info *di, enum demangle_component_type type,
     case DEMANGLE_COMPONENT_LITERAL_NEG:
     case DEMANGLE_COMPONENT_COMPOUND_NAME:
     case DEMANGLE_COMPONENT_VECTOR_TYPE:
+    case DEMANGLE_COMPONENT_CLONE:
       if (left == NULL || right == NULL)
 	return NULL;
       break;
@@ -1036,7 +1040,7 @@ d_make_sub (struct d_info *di, const char *name, int len)
   return p;
 }
 
-/* <mangled-name> ::= _Z <encoding>
+/* <mangled-name> ::= _Z <encoding> [<clone-suffix>]*
 
    TOP_LEVEL is non-zero when called at the top level.  */
 
@@ -1044,6 +1048,8 @@ CP_STATIC_IF_GLIBCPP_V3
 struct demangle_component *
 cplus_demangle_mangled_name (struct d_info *di, int top_level)
 {
+  struct demangle_component *p;
+
   if (! d_check_char (di, '_')
       /* Allow missing _ if not at toplevel to work around a
 	 bug in G++ abi-version=2 mangling; see the comment in
@@ -1052,7 +1058,18 @@ cplus_demangle_mangled_name (struct d_info *di, int top_level)
     return NULL;
   if (! d_check_char (di, 'Z'))
     return NULL;
-  return d_encoding (di, top_level);
+  p = d_encoding (di, top_level);
+
+  /* If at top level and parsing parameters, check for a clone
+     suffix.  */
+  if (top_level && (di->options & DMGL_PARAMS) != 0)
+    while (d_peek_char (di) == '.'
+	   && (IS_LOWER (d_peek_next_char (di))
+	       || d_peek_next_char (di) == '_'
+	       || IS_DIGIT (d_peek_next_char (di))))
+      p = d_clone_suffix (di, p);
+
+  return p;
 }
 
 /* Return whether a function should have a return type.  The argument
@@ -2346,7 +2363,7 @@ d_parmlist (struct d_info *di)
       struct demangle_component *type;
 
       char peek = d_peek_char (di);
-      if (peek == '\0' || peek == 'E')
+      if (peek == '\0' || peek == 'E' || peek == '.')
 	break;
       type = cplus_demangle_type (di);
       if (type == NULL)
@@ -3066,6 +3083,33 @@ d_unnamed_type (struct d_info *di)
   return ret;
 }
 
+/* <clone-suffix> ::= [ . <clone-type-identifier> ] [ . <nonnegative number> ]*
+*/
+
+static struct demangle_component *
+d_clone_suffix (struct d_info *di, struct demangle_component *encoding)
+{
+  const char *suffix = d_str (di);
+  const char *pend = suffix;
+  struct demangle_component *n;
+
+  if (*pend == '.' && (IS_LOWER (pend[1]) || pend[1] == '_'))
+    {
+      pend += 2;
+      while (IS_LOWER (*pend) || *pend == '_')
+	++pend;
+    }
+  while (*pend == '.' && IS_DIGIT (pend[1]))
+    {
+      pend += 2;
+      while (IS_DIGIT (*pend))
+	++pend;
+    }
+  d_advance (di, pend - suffix);
+  n = d_make_name (di, suffix, pend - suffix);
+  return d_make_comp (di, DEMANGLE_COMPONENT_CLONE, encoding, n);
+}
+
 /* Add a new substitution.  */
 
 static int
@@ -4343,6 +4387,13 @@ d_print_comp (struct d_print_info *dpi,
       d_append_char (dpi, '}');
       return;
 
+    case DEMANGLE_COMPONENT_CLONE:
+      d_print_comp (dpi, d_left (dc));
+      d_append_string (dpi, " [clone ");
+      d_print_comp (dpi, d_right (dc));
+      d_append_char (dpi, ']');
+      return;
+
     default:
       d_print_error (dpi);
       return;