/* This file contains the list of the debug counter for GCC.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* A debug counter provides you a way to count an event
Use -fdbg-cnt=counter1:N,counter2:M,...
which sets the limit for counter1 to N, and the limit for counter2 to M, etc.
e.g. setting a limit to zero will make dbg_cnt () return false *always*.
+
+ The following shell file can then be used to binary search for
+ exact transformation that causes the bug. A second shell script
+ should be written, say "tryTest", which exits with 1 if the
+ compiled program fails and exits with 0 if the program succeeds.
+ This shell script should take 1 parameter, the value to be passed
+ to set the counter of the compilation command in tryTest. Then,
+ assuming that the following script is called binarySearch,
+ the command:
+
+ binarySearch tryTest
+
+ will automatically find the highest value of the counter for which
+ the program fails. If tryTest never fails, binarySearch will
+ produce unpredictable results as it will try to find an upper bound
+ that does not exist.
+
+ When dbgcnt does hits the limit, it writes a comment in the current
+ dump_file of the form:
+
+ ***dbgcnt: limit reached for %s.***
+
+ Assuming that the dump file is logging the analysis/transformations
+ it is making, this pinpoints the exact position in the log file
+ where the problem transformation is being logged.
+
+=====================================
+#!/bin/bash
+
+while getopts "l:u:i:" opt
+do
+ case $opt in
+ l) lb="$OPTARG";;
+ u) ub="$OPTARG";;
+ i) init="$OPTARG";;
+ ?) usage; exit 3;;
+ esac
+done
+
+shift $(($OPTIND - 1))
+echo $@
+cmd=${1+"${@}"}
+
+lb=${lb:=0}
+init=${init:=100}
+
+$cmd $lb
+lb_val=$?
+if [ -z "$ub" ]; then
+ # find the upper bound
+ ub=$(($init + $lb))
+ true
+ while [ $? -eq $lb_val ]; do
+ ub=$(($ub * 10))
+ #ub=`expr $ub \* 10`
+ $cmd $ub
+ done
+fi
+
+echo command: $cmd
+
+true
+while [ `expr $ub - $lb` -gt 1 ]; do
+ try=$(($lb + ( $ub - $lb ) / 2))
+ $cmd $try
+ if [ $? -eq $lb_val ]; then
+ lb=$try
+ else
+ ub=$try
+ fi
+done
+
+echo lbound: $lb
+echo ubound: $ub
+
+=====================================
+
*/
/* Debug counter definitions. */
DEBUG_COUNTER (auto_inc_dec)
+DEBUG_COUNTER (ccp)
+DEBUG_COUNTER (cfg_cleanup)
DEBUG_COUNTER (cse2_move2add)
+DEBUG_COUNTER (cprop)
DEBUG_COUNTER (dce)
+DEBUG_COUNTER (dce_fast)
+DEBUG_COUNTER (dce_ud)
DEBUG_COUNTER (delete_trivial_dead)
+DEBUG_COUNTER (df_byte_scan)
DEBUG_COUNTER (dse)
+DEBUG_COUNTER (dse1)
+DEBUG_COUNTER (dse2)
DEBUG_COUNTER (gcse2_delete)
+DEBUG_COUNTER (global_alloc_at_func)
+DEBUG_COUNTER (global_alloc_at_reg)
+DEBUG_COUNTER (hoist)
DEBUG_COUNTER (ia64_sched2)
+DEBUG_COUNTER (if_conversion)
+DEBUG_COUNTER (if_after_combine)
+DEBUG_COUNTER (if_after_reload)
DEBUG_COUNTER (local_alloc_for_sched)
DEBUG_COUNTER (postreload_cse)
+DEBUG_COUNTER (pre)
DEBUG_COUNTER (pre_insn)
+DEBUG_COUNTER (treepre_insert)
DEBUG_COUNTER (sched2_func)
DEBUG_COUNTER (sched_block)
DEBUG_COUNTER (sched_func)
DEBUG_COUNTER (sched_insn)
DEBUG_COUNTER (sched_region)
+DEBUG_COUNTER (sel_sched_cnt)
+DEBUG_COUNTER (sel_sched_region_cnt)
+DEBUG_COUNTER (sel_sched_insn_cnt)
+DEBUG_COUNTER (sms_sched_loop)
+DEBUG_COUNTER (store_motion)
DEBUG_COUNTER (split_for_sched2)
DEBUG_COUNTER (tail_call)
-DEBUG_COUNTER (global_alloc_at_func)
-DEBUG_COUNTER (global_alloc_at_reg)
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