Add gcc-4.6. Synced to @180989

Change-Id: Ie3676586e1d8e3c8cd9f07d022f450d05fa08439
svn://gcc.gnu.org/svn/gcc/branches/google/gcc-4_6-mobile

1 files changed, 116 insertions, 0 deletions

diff --git a/gcc-4.6/gcc/timevar.h b/gcc-4.6/gcc/timevar.h
new file mode 100644
index 000000000..dad9dfdf2
--- /dev/null
+++ b/gcc-4.6/gcc/timevar.h
@@ -0,0 +1,116 @@
+/* Timing variables for measuring compiler performance.
+   Copyright (C) 2000, 2003, 2004, 2005, 2007, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Alex Samuel <samuel@codesourcery.com>
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GCC is distributed in the hope that it will be useful, but WITHOUT
+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+   License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_TIMEVAR_H
+#define GCC_TIMEVAR_H
+
+/* Timing variables are used to measure elapsed time in various
+   portions of the compiler.  Each measures elapsed user, system, and
+   wall-clock time, as appropriate to and supported by the host
+   system.
+
+   Timing variables are defined using the DEFTIMEVAR macro in
+   timevar.def.  Each has an enumeral identifier, used when referring
+   to the timing variable in code, and a character string name.
+
+   Timing variables can be used in two ways:
+
+     - On the timing stack, using timevar_push and timevar_pop.
+       Timing variables may be pushed onto the stack; elapsed time is
+       attributed to the topmost timing variable on the stack.  When
+       another variable is pushed on, the previous topmost variable is
+       `paused' until the pushed variable is popped back off.
+
+     - As a standalone timer, using timevar_start and timevar_stop.
+       All time elapsed between the two calls is attributed to the
+       variable.
+*/
+
+/* This structure stores the various varieties of time that can be
+   measured.  Times are stored in seconds.  The time may be an
+   absolute time or a time difference; in the former case, the time
+   base is undefined, except that the difference between two times
+   produces a valid time difference.  */
+
+struct timevar_time_def
+{
+  /* User time in this process.  */
+  double user;
+
+  /* System time (if applicable for this host platform) in this
+     process.  */
+  double sys;
+
+  /* Wall clock time.  */
+  double wall;
+
+  /* Garbage collector memory.  */
+  unsigned ggc_mem;
+};
+
+/* An enumeration of timing variable identifiers.  Constructed from
+   the contents of timevar.def.  */
+
+#define DEFTIMEVAR(identifier__, name__) \
+    identifier__,
+typedef enum
+{
+  TV_NONE,
+#include "timevar.def"
+  TIMEVAR_LAST
+}
+timevar_id_t;
+#undef DEFTIMEVAR
+
+/* True if timevars should be used.  In GCC, this happens with
+   the -ftime-report flag.  */
+extern bool timevar_enable;
+
+/* Total amount of memory allocated by garbage collector.  */
+extern size_t timevar_ggc_mem_total;
+
+extern void timevar_init (void);
+extern void timevar_push_1 (timevar_id_t);
+extern void timevar_pop_1 (timevar_id_t);
+extern void timevar_start (timevar_id_t);
+extern void timevar_stop (timevar_id_t);
+extern bool timevar_cond_start (timevar_id_t);
+extern void timevar_cond_stop (timevar_id_t, bool);
+extern void timevar_print (FILE *);
+
+/* Provided for backward compatibility.  */
+static inline void
+timevar_push (timevar_id_t tv)
+{
+  if (timevar_enable)
+    timevar_push_1 (tv);
+}
+
+static inline void
+timevar_pop (timevar_id_t tv)
+{
+  if (timevar_enable)
+    timevar_pop_1 (tv);
+}
+
+extern void print_time (const char *, long);
+
+#endif /* ! GCC_TIMEVAR_H */