Add options -Wunused-variable, -Wunused-function, -Wunused-label,

[pf3gnuchains/gcc-fork.git] / gcc / flags.h

diff --git a/gcc/flags.h b/gcc/flags.h
index e8a66bf..3c543bc 100644 (file)
--- a/gcc/flags.h
+++ b/gcc/flags.h
@@ -1,5 +1,6 @@
 /* Compilation switch flag definitions for GNU CC.
-   Copyright (C) 1987, 88, 94-98, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000
+   Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -19,7 +20,7 @@ the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
 /* Name of the input .c file being compiled.  */
-extern char *main_input_filename;
+extern const char *main_input_filename;
 
 enum debug_info_type
 {
@@ -57,11 +58,6 @@ extern int optimize;
 
 extern int optimize_size;
 
-/* Nonzero means do stupid register allocation.  -noreg.
-   Currently, this is 1 if `optimize' is 0.  */
-
-extern int obey_regdecls;
-
 /* Don't print functions as they are compiled and don't print
    times taken by the various passes.  -quiet.  */
 
@@ -75,9 +71,17 @@ extern int inhibit_warnings;
 
 extern int extra_warnings;
 
-/* Nonzero to warn about unused local variables.  */
+/* Nonzero to warn about unused variables, functions et.al.  Use
+   set_Wunused() to update the -Wunused-* flags that correspond to the
+   -Wunused option. */
 
-extern int warn_unused;
+extern void set_Wunused PARAMS ((int setting));
+
+extern int warn_unused_function;
+extern int warn_unused_label;
+extern int warn_unused_parameter;
+extern int warn_unused_variable;
+extern int warn_unused_value;
 
 /* Nonzero to warn about code which is never reached.  */
 
@@ -118,29 +122,32 @@ extern int warn_return_type;
 
 extern int warn_cast_align;
 
-/* Nonzero means warn that dbx info for template class methods isn't fully
-   supported yet.  */
-
-extern int warn_template_debugging;
-
 /* Nonzero means warn about any identifiers that match in the first N
    characters.  The value N is in `id_clash_len'.  */
 
 extern int warn_id_clash;
-extern unsigned id_clash_len;
+extern int id_clash_len;
 
 /* Nonzero means warn about any objects definitions whose size is larger
    than N bytes.  Also want about function definitions whose returned
    values are larger than N bytes. The value N is in `larger_than_size'.  */
 
 extern int warn_larger_than;
-extern unsigned larger_than_size;
+extern HOST_WIDE_INT larger_than_size;
 
 /* Warn if a function returns an aggregate,
    since there are often incompatible calling conventions for doing this.  */
 
 extern int warn_aggregate_return;
 
+/* Warn if packed attribute on struct is unnecessary and inefficient.  */
+
+extern int warn_packed;
+
+/* Warn when gcc pads a structure to an alignment boundary.  */
+
+extern int warn_padded;
+
 /* Nonzero if generating code to do profiling.  */
 
 extern int profile_flag;
@@ -295,6 +302,10 @@ extern int flag_volatile_static;
 
 extern int flag_fast_math;
 
+/* Nonzero allows GCC to optimize sibling and tail recursive calls.  */
+
+extern int flag_optimize_sibling_calls;
+
 /* Nonzero means the front end generally wants `errno' maintained by math
    operations, like built-in SQRT, unless overridden by flag_fast_math.  */
 
@@ -404,6 +415,10 @@ extern int flag_exceptions;
 
 extern int flag_new_exceptions;
 
+/* Nonzero means generate frame unwind info table when supported */
+
+extern int flag_unwind_tables;
+
 /* Nonzero means don't place uninitialized global data in common storage
    by default.  */
 
@@ -464,8 +479,8 @@ extern int flag_argument_noalias;
    if alias analysis (in general) is enabled.  */
 extern int flag_strict_aliasing;
 
-/* Emit code to check for stack overflow; also may cause large objects
-   to be allocated dynamically.  */
+/* Emit code to probe the stack, to help detect stack overflow; also
+   may cause large objects to be allocated dynamically.  */
 extern int flag_stack_check;
 
 /* Do the full regmove optimization pass.  */
@@ -491,6 +506,11 @@ extern int flag_bounded_pointers;
    For Fortran: defaults to off.
    For CHILL: defaults to off.  */
 extern int flag_bounds_check;
+
+/* If one, renumber instruction UIDs to reduce the number of
+   unused UIDs if there are a lot of instructions.  If greater than
+   one, unconditionally renumber instruction UIDs.  */
+extern int flag_renumber_insns;
 \f
 /* Other basic status info about current function.  */