* defs.h (STRCMP, STREQ, STREQN): New macros.

* defs.h (demangle_and_match):  Remove prototype.
	* dwarfread.c (STREQ, STREQN):  Remove macros, replaced with STREQ
	  and STREQN defined in defs.h.
	* dwarfread.c (set_cu_language):  For completely unknown languages,
	  try to deduce the language from the filename.  Retain behavior
	  that for known languages we don't know how to handle, we use
	  language_unknown.
	* dwarfread.c (enum_type, symthesize_typedef):  Initialize language
	  and demangled name fields in symbol.
	* dwarfread.c, mipsread.c, partial-stab.h:  For all usages of
	  ADD_PSYMBOL_TO_LIST, add language and objfile parameters.
	* dwarfread.c (new_symbol):  Attempt to demangle C++ symbol names
	  and cache the results in SYMBOL_DEMANGLED_NAME for the symbol.
	* elfread.c (STREQ):  Remove macro, use STREQ defined in defs.h.
	  Replace usages throughout.
	* elfread.c (demangle.h):  Include.
	* elfread.c (record_minimal_symbol):  Remove prototype and function.
	* gdbtypes.h, symtab.h (B_SET, B_CLR, B_TST, B_TYPE, B_BYTES,
	  B_CLRALL):  Moved from symtab.h to gdbtypes.h.
	* infcmd.c (jump_command):  Remove code to demangle name and add
	  it to a cleanup list.  Now just use SYMBOL_DEMANGLED_NAME.
	* minsyms.c (demangle.h):  Include.
	* minsyms.c (lookup_minimal_symbol):  Indent comment to match code.
	* minsyms.c (install_minimal_symbols):  Attempt to demangle symbol
	  names as C++ names, and cache them in SYMBOL_DEMANGLED_NAME.
	* mipsread.c (psymtab_language):  Add static variable.
	* stabsread.c (demangle.h):  Include.
	* stabsread.c (define_symbol):  Attempt to demangle C++ symbol
	  names and cache them in the SYMBOL_DEMANGLED_NAME field.
	* stack.c (return_command):  Remove explicit demangling of name
	  and use of cleanups.  Just use SYMBOL_DEMANGLED_NAME.
	* symfile.c (demangle.h):  Include.
	* symfile.c (add_psymbol_to_list, add_psymbol_addr_to_list):  Fix
	  to match macros in symfile.h and allow them to be compiled
	  if INLINE_ADD_PSYMBOL is not true.
	* symfile.h (INLINE_ADD_PSYMBOL):  Default to true if not set.
	* symfile.h (ADD_PSYMBOL_*):  Add language and objfile parameters.
	  Add code to demangle and cache C++ symbol names.  Use macro form
	  if INLINE_ADD_PSYMBOL is true, otherwise use C function form.
	* symmisc.c (add_psymbol_to_list, add_psymbol_addr_to_list):
	  Remove, also defined in symfile.c, which we already fixed.
	* symtab.c (expensive_mangler):  Remove prototype and function.
	* symtab.c (find_methods):  Remove physnames parameter and fix
	  prototype to match.
	* symtab.c (completion_list_add_symbol):  Name changed to
	  completion_list_add_name.
	* symtab.c (COMPLETION_LIST_ADD_SYMBOL):  New macro, adds both
	  the normal symbol name and the cached C++ demangled name.
	* symtab.c (lookup_demangled_partial_symbol,
	  lookup_demangled_block_symbol):  Remove prototypes and functions.
	* symtab.c (lookup_symbol):  Remove use of expensive_mangler,
	  use lookup_block_symbol instead of lookup_demangled_block_symbol.
	  Remove code to try demangling names and matching them.
	* symtab.c (lookup_partial_symbol, lookup_block_symbol):
	  Fix to try matching the cached demangled name if no match is
	  found using the regular symbol name.
	* symtab.c (find_methods):  Remove unused physnames array.
	* symtab.c (name_match, NAME_MATCH):  Remove function and macro,
	  replaced with SYMBOL_MATCHES_REGEXP from symtab.h.
	* symtab.c (completion_list_add_symbol):  Rewrite to use cached
	  C++ demangled symbol names.
	* symtab.h:  Much reformatting of structures and such to add
	  whitespace to make them more readable, and make them more
	  consistent with other gdb structure definitions.
	* symtab.h (general_symbol_info): New struct containing fields
	  common to all symbols.
	* symtab.h (SYMBOL_LANGUAGE, SYMBOL_DEMANGLED_NAME,
	  SYMBOL_SOURCE_NAME, SYMBOL_LINKAGE_NAME, SYMBOL_MATCHES_NAME,
	  SYMBOL_MATCHES_REGEXP, MSYMBOL_INFO, MSYMBOL_TYPE):  New macros.
	* symtab. (struct minimal_symbol, struct partial_symbol, struct
	  symbol): Use general_symbol_info struct.
	* utils.c (demangle_and_match):  Remove, no longer used.
	* valops.c (demangle.h):  Include.
	* xcoffexec.c (eq):  Remove macro, replace usages with STREQ.
	* blockframe.c, breakpoint.c, c-exp.y, c-valprint.c, dbxread.c,
	  infcmd.c, m2-exp.y, minsyms.c, objfiles.h, solib.c, stack.c,
	  symmisc.c, symtab.c, valops.c:  Replace references to minimal
	  symbol fields with appropriate macros.
	* breakpoint.c, buildsym.c, c-exp.y, c-typeprint.c, c-valprint.c,
	  coffread.c, command.c, convex-tdep.c, cp-valprint.c, dbxread.c,
	  demangle.c, elfread.c, energize.c, environ.c, exec.c,
	  gdbtypes.c, i960-tdep.c, infrun.c, infrun-hacked.c, language.c,
	  main.c, minsyms.c, mipsread.c, partial-stab.h, remote-es1800.c,
	  remote-nindy.c, remote-udi.c, rs6000-tdep.c, solib.c, source.c,
	  sparc-pinsn.c, stabsread.c, standalone.c, state.c, stuff.c,
	  symfile.c, symmisc.c, symtab.c, symtab.h, tm-sysv4.h,
	  tm-ultra3.h, values.c, xcoffexec.c, xcoffread.c:  Replace strcmp
	  and strncmp usages with STREQ, STREQN, or STRCMP as appropriate.
	* breakpoint.c, buildsym.c, c-typeprint.c, expprint.c, findvar.c,
	  mipsread.c, printcmd.c, source.c, stabsread.c, stack.c,
	  symmisc.c, tm-29k.h, valops.c, values.c:  Replace SYMBOL_NAME
	  references with SYMBOL_SOURCE_NAME or SYMBOL_LINKAGE_NAME as
	  appropriate.
	* buildsym.c (start_subfile, patch_subfile_names):  Default the
	  source language to what can be deduced from the filename.
	* buildsym.c (end_symtab):  Update the source language in the
	  allocated symtab to match what we have been using.
	* buildsym.h (struct subfile):  Add a language field.
	* c-typeprint.c (c_print_type):  Remove code to do explicit
	  demangling.
	* dbxread.c (psymtab_language):  Add static variable.
	* dbxread.c (start_psymtab):  Initialize psymtab_language using
	  deduce_language_from_filename.

gdb/dwarfread.c

@@ -207,9 +207,6 @@ typedef unsigned int DIE_REF;	/* Reference to a DIE */
 #endif
 /* end-sanitize-chill */
 
-#define STREQ(a,b)		(strcmp(a,b)==0)
-#define STREQN(a,b,n)		(strncmp(a,b,n)==0)
-
 /* Flags to target_to_host() that tell whether or not the data object is
    expected to be signed.  Used, for example, when fetching a signed
    integer in the target environment which is used as a signed integer
@@ -691,9 +688,13 @@ set_cu_language (dip)
       case LANG_FORTRAN77:
       case LANG_FORTRAN90:
       case LANG_PASCAL83:
-      default:
+	/* We don't know anything special about these yet. */
 	cu_language = language_unknown;
 	break;
+      default:
+	/* If no at_language, try to deduce one from the filename */
+	cu_language = deduce_language_from_filename (dip -> at_name);
+	break;
     }
   cu_language_defn = language_def (cu_language);
 }
@@ -1736,6 +1737,8 @@ enum_type (dip, objfile)
 	  memset (sym, 0, sizeof (struct symbol));
 	  SYMBOL_NAME (sym) = create_name (list -> field.name,
 					   &objfile->symbol_obstack);
+	  SYMBOL_LANGUAGE (sym) = cu_language;
+	  SYMBOL_DEMANGLED_NAME (sym) = NULL;
 	  SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
 	  SYMBOL_CLASS (sym) = LOC_CONST;
 	  SYMBOL_TYPE (sym) = type;
@@ -2543,7 +2546,8 @@ add_enum_psymbol (dip, objfile)
 	{
 	  scan += TARGET_FT_LONG_SIZE (objfile);
 	  ADD_PSYMBOL_TO_LIST (scan, strlen (scan), VAR_NAMESPACE, LOC_CONST,
-			       objfile -> static_psymbols, 0);
+			       objfile -> static_psymbols, 0, cu_language,
+			       objfile);
 	  scan += strlen (scan) + 1;
 	}
     }
@@ -2579,7 +2583,7 @@ add_partial_symbol (dip, objfile)
       ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
 			   VAR_NAMESPACE, LOC_BLOCK,
 			   objfile -> global_psymbols,
-			   dip -> at_low_pc);
+			   dip -> at_low_pc, cu_language, objfile);
       break;
     case TAG_global_variable:
       record_minimal_symbol (dip -> at_name, locval (dip -> at_location),
@@ -2587,25 +2591,25 @@ add_partial_symbol (dip, objfile)
       ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
 			   VAR_NAMESPACE, LOC_STATIC,
 			   objfile -> global_psymbols,
-			   0);
+			   0, cu_language, objfile);
       break;
     case TAG_subroutine:
       ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
 			   VAR_NAMESPACE, LOC_BLOCK,
 			   objfile -> static_psymbols,
-			   dip -> at_low_pc);
+			   dip -> at_low_pc, cu_language, objfile);
       break;
     case TAG_local_variable:
       ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
 			   VAR_NAMESPACE, LOC_STATIC,
 			   objfile -> static_psymbols,
-			   0);
+			   0, cu_language, objfile);
       break;
     case TAG_typedef:
       ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
 			   VAR_NAMESPACE, LOC_TYPEDEF,
 			   objfile -> static_psymbols,
-			   0);
+			   0, cu_language, objfile);
       break;
     case TAG_class_type:
     case TAG_structure_type:
@@ -2614,14 +2618,14 @@ add_partial_symbol (dip, objfile)
       ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
 			   STRUCT_NAMESPACE, LOC_TYPEDEF,
 			   objfile -> static_psymbols,
-			   0);
+			   0, cu_language, objfile);
       if (cu_language == language_cplus)
 	{
 	  /* For C++, these implicitly act as typedefs as well. */
 	  ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
 			       VAR_NAMESPACE, LOC_TYPEDEF,
 			       objfile -> static_psymbols,
-			       0);
+			       0, cu_language, objfile);
 	}
       break;
     }
@@ -2928,6 +2932,26 @@ new_symbol (dip, objfile)
       SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
       SYMBOL_CLASS (sym) = LOC_STATIC;
       SYMBOL_TYPE (sym) = decode_die_type (dip);
+
+      /* If this symbol is from a C++ compilation, then attempt to cache the
+	 demangled form for future reference.  This is a typical time versus
+	 space tradeoff, that was decided in favor of time because it sped up
+	 C++ symbol lookups by a factor of about 20. */
+
+      SYMBOL_LANGUAGE (sym) = cu_language;
+      if (SYMBOL_LANGUAGE (sym) == language_cplus)
+	{
+	  char *demangled =
+	    cplus_demangle (SYMBOL_NAME (sym), DMGL_PARAMS | DMGL_ANSI);
+	  if (demangled != NULL)
+	    {
+	      SYMBOL_DEMANGLED_NAME (sym) = 
+		obsavestring (demangled, strlen (demangled),
+			      &objfile -> symbol_obstack);
+	      free (demangled);
+	    }
+	}
+
       switch (dip -> die_tag)
 	{
 	case TAG_label:
@@ -3056,6 +3080,8 @@ synthesize_typedef (dip, objfile, type)
       memset (sym, 0, sizeof (struct symbol));
       SYMBOL_NAME (sym) = create_name (dip -> at_name,
 				       &objfile->symbol_obstack);
+      SYMBOL_LANGUAGE (sym) = cu_language;
+      SYMBOL_DEMANGLED_NAME (sym) = NULL;
       SYMBOL_TYPE (sym) = type;
       SYMBOL_CLASS (sym) = LOC_TYPEDEF;
       SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;