* doc/passes.texi: Document predictive commoning.

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

diff --git a/gcc/flags.h b/gcc/flags.h
index 0b594ee..07e5ec3 100644 (file)
--- a/gcc/flags.h
+++ b/gcc/flags.h
@@ -23,6 +23,7 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
 #ifndef GCC_FLAGS_H
 #define GCC_FLAGS_H
 
+#include "coretypes.h"
 #include "options.h"
 
 enum debug_info_type
@@ -54,6 +55,25 @@ enum debug_info_level
 /* Specify how much debugging info to generate.  */
 extern enum debug_info_level debug_info_level;
 
+/* A major contribution to object and executable size is debug
+   information size.  A major contribution to debug information
+   size is struct descriptions replicated in several object files.
+   The following function determines whether or not debug information
+   should be generated for a given struct.  The indirect parameter
+   indicates that the struct is being handled indirectly, via
+   a pointer.  See opts.c for the implementation. */
+
+enum debug_info_usage
+{
+  DINFO_USAGE_DFN,     /* A struct definition. */
+  DINFO_USAGE_DIR_USE, /* A direct use, such as the type of a variable. */
+  DINFO_USAGE_IND_USE, /* An indirect use, such as through a pointer. */
+  DINFO_USAGE_NUM_ENUMS        /* The number of enumerators. */
+};
+
+extern bool should_emit_struct_debug (tree type_decl, enum debug_info_usage);
+extern void set_struct_debug_option (const char *value);
+
 /* Nonzero means use GNU-only extensions in the generated symbolic
    debugging information.  */
 extern bool use_gnu_debug_info_extensions;
@@ -102,6 +122,15 @@ extern bool extra_warnings;
 
 extern void set_Wunused (int setting);
 
+/* Used to set the level of -Wstrict-aliasing, when no level is specified.  
+   The external way to set the default level is to use
+   -Wstrict-aliasing=level.  
+   ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
+   and 0 otherwise.  After calling this function, wstrict_aliasing will be
+   set to the default value of -Wstrict_aliasing=level.  */
+
+extern void set_Wstrict_aliasing (int onoff);
+
 /* 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'.  */