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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) 2004-2017 OpenWorks LLP
11       info@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 and of the
45    supplied |pxControl| argument. */
46 extern
47 IRSB* do_iropt_BB (
48          IRSB* bb,
49          IRExpr* (*specHelper) (const HChar*, IRExpr**, IRStmt**, Int),
50          Bool (*preciseMemExnsFn)(Int,Int,VexRegisterUpdates),
51          VexRegisterUpdates pxControl,
52          Addr    guest_addr,
53          VexArch guest_arch
54       );
55 
56 /* Do a constant folding/propagation pass. */
57 extern
58 IRSB* cprop_BB ( IRSB* );
59 
60 /* Do a dead-code removal pass.  bb is destructively modified. */
61 extern
62 void do_deadcode_BB ( IRSB* bb );
63 
64 /* The tree-builder.  Make (approximately) maximal safe trees.  bb is
65    destructively modified.  Returns (unrelatedly, but useful later on)
66    the guest address of the highest addressed byte from any insn in
67    this block, or Addr_MAX if unknown (can that ever happen?) */
68 extern
69 Addr ado_treebuild_BB (
70         IRSB* bb,
71         Bool (*preciseMemExnsFn)(Int,Int,VexRegisterUpdates),
72         VexRegisterUpdates pxControl
73      );
74 
75 #endif /* ndef __VEX_IR_OPT_H */
76 
77 /*---------------------------------------------------------------*/
78 /*--- end                                            ir_opt.h ---*/
79 /*---------------------------------------------------------------*/
80