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      1 
      2 /*---------------------------------------------------------------*/
      3 /*--- begin                                          ir_opt.h ---*/
      4 /*---------------------------------------------------------------*/
      5 
      6 /*
      7    This file is part of Valgrind, a dynamic binary instrumentation
      8    framework.
      9 
     10    Copyright (C) 2004-2012 OpenWorks LLP
     11       info (at) open-works.net
     12 
     13    This program is free software; you can redistribute it and/or
     14    modify it under the terms of the GNU General Public License as
     15    published by the Free Software Foundation; either version 2 of the
     16    License, or (at your option) any later version.
     17 
     18    This program is distributed in the hope that it will be useful, but
     19    WITHOUT ANY WARRANTY; without even the implied warranty of
     20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     21    General Public License for more details.
     22 
     23    You should have received a copy of the GNU General Public License
     24    along with this program; if not, write to the Free Software
     25    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     26    02110-1301, USA.
     27 
     28    The GNU General Public License is contained in the file COPYING.
     29 
     30    Neither the names of the U.S. Department of Energy nor the
     31    University of California nor the names of its contributors may be
     32    used to endorse or promote products derived from this software
     33    without prior written permission.
     34 */
     35 
     36 #ifndef __VEX_IR_OPT_H
     37 #define __VEX_IR_OPT_H
     38 
     39 #include "libvex_basictypes.h"
     40 #include "libvex_ir.h"
     41 #include "libvex.h"
     42 
     43 /* Top level optimiser entry point.  Returns a new BB.  Operates
     44    under the control of the global "vex_control" struct. */
     45 extern
     46 IRSB* do_iropt_BB(
     47          IRSB* bb,
     48          IRExpr* (*specHelper) (HChar*, IRExpr**, IRStmt**, Int),
     49          Bool (*preciseMemExnsFn)(Int,Int),
     50          Addr64 guest_addr,
     51          VexArch guest_arch
     52       );
     53 
     54 /* Do a constant folding/propagation pass. */
     55 extern
     56 IRSB* cprop_BB ( IRSB* );
     57 
     58 /* Do a dead-code removal pass.  bb is destructively modified. */
     59 extern
     60 void do_deadcode_BB ( IRSB* bb );
     61 
     62 /* The tree-builder.  Make (approximately) maximal safe trees.  bb is
     63    destructively modified.  Returns (unrelatedly, but useful later on)
     64    the guest address of the highest addressed byte from any insn in
     65    this block, or Addr64_MAX if unknown (can that ever happen?) */
     66 extern
     67 Addr64 ado_treebuild_BB ( IRSB* bb );
     68 
     69 #endif /* ndef __VEX_IR_OPT_H */
     70 
     71 /*---------------------------------------------------------------*/
     72 /*--- end                                            ir_opt.h ---*/
     73 /*---------------------------------------------------------------*/
     74