* ggc.h: Delete ggc_add_string_root and ggc_mark_string. Add

        digit_vector and digit_string.
        * stringpool.c (digit_vector): New.
        (ggc_alloc_string): Use digit_string.

        * stmt.c (digit_strings): Delete.
        (init_stmt): Do not initialize digit_strings.
        (expand_asm_operands): Use ggc.h's digit_string macro.
        * toplev.c (mark_file_stack): Delete.
        (compile_file): Don't call init_tree_codes.
        (main): No need to make the file stack a GC root.
        * tree.c (init_tree_codes): Delete.
        * tree.h (init_tree_codes): Delete.

        * c-lex.c: Don't include ggc.h.
        (mark_splay_tree_node, mark_splay_tree): Delete.
        (init_c_lex): No need to ggc_strdup string constant.  Don't add
        file_info_tree to GGC roots.
        (cb_enter_file, cb_rename_file): No need to ggc_strdup
        ip->nominal_fname.

        * Makefile.in (c-lex.o): No longer depends on $(GGC_H).

        * dbxout.c (dbxout_init),
        dwarf2out.c (dwarf2out_line),
        ggc-common.c (ggc_mark_rtx_children, ggc_mark_trees),
        varasm.c (mark_const_hash_entry, mark_pool_constant, init_varasm_once),
        xcoffout.c (xcoffout_source_file),
        i386.c (load_pic_register):
        Delete call(s) to ggc_add_string_root and/or ggc_mark_string.

        * except.c (create_rethrow_ref),
        profile.c (init_edge_profiler),
        toplev.c (compile_file),
        varasm.c (named_section, assemble_static_space,
        assemble_trampoline_template, output_constant_def, force_const_mem),
        i386.c (load_pic_register),
        ia64.c (ia64_encode_section_info),
        rs6000.c (rs6000_emit_load_toc_table, create_TOC_reference,
        rs6000_emit_prologue, rs6000_emit_epilogue),
        rs6000.md (load_toc_aix_si, load_toc_aix_di):
        Change ggc_alloc_string (var, -1) to ggc_strdup (var).

        * profile.c (output_func_start_profiler),
        tree.c (make_node),
        i386.c (load_pic_register): No need to ggc_strdup string constant.

cp:
        * lex.c (mark_impl_file_chain): Delete.
        (init_parse): Remove call to ggc_add_string_root.  No need to
        ggc_strdup a string constant.  Do not add impl_file_chain to GC
        roots.
        (handle_pragma_implementation): No need to ggc_strdup main_filename.

f:
        * lex.c (ffelex_hash_): Change ggc_alloc_string (var, -1) to
        ggc_strdup (var).

java:
        * parse.y (goal): Remove call to ggc_add_string_root.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@37522 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 0 deletions

diff --git a/gcc/stringpool.c b/gcc/stringpool.c
index 32381e01ebb..20db021009c 100644
--- a/gcc/stringpool.c
+++ b/gcc/stringpool.c
@@ -40,6 +40,13 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 /* The "" allocated string.  */
 const char empty_string[] = "";
 
+/* Character strings, each containing a single decimal digit.
+   Written this way to save space.  */
+const char digit_vector[] = {
+  '0', 0, '1', 0, '2', 0, '3', 0, '4', 0,
+  '5', 0, '6', 0, '7', 0, '8', 0, '9', 0
+};
+
 static struct obstack string_stack;
 
 /* This is the hash entry associated with each string.  It lives in
@@ -262,6 +269,8 @@ ggc_alloc_string (contents, length)
 
   if (length == 0)
     return empty_string;
+  if (length == 1 && contents[0] >= '0' && contents[0] <= '9')
+    return digit_string (contents[0] - '0');
 
   str = alloc_string (contents, length, INSERT);
   return str->ptr;