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live.h
Go to the documentation of this file.00001 // $Id: live.h,v 1.7 2003/08/07 23:14:17 pnav Exp $ 00002 // ---------------------------------------------------------------------- 00003 // 00004 // C-Breeze 00005 // C Compiler Framework 00006 // 00007 // Copyright (c) 2000 University of Texas at Austin 00008 // 00009 // Adam Brown 00010 // Samuel Z. Guyer 00011 // Daniel A. Jimenez 00012 // Calvin Lin 00013 // 00014 // Permission is hereby granted, free of charge, to any person 00015 // obtaining a copy of this software and associated documentation 00016 // files (the "Software"), to deal in the Software without 00017 // restriction, including without limitation the rights to use, copy, 00018 // modify, merge, publish, distribute, sublicense, and/or sell copies 00019 // of the Software, and to permit persons to whom the Software is 00020 // furnished to do so, subject to the following conditions: 00021 // 00022 // The above copyright notice and this permission notice shall be 00023 // included in all copies or substantial portions of the Software. 00024 // 00025 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00026 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00027 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00028 // NONINFRINGEMENT. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT 00029 // AUSTIN BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 00030 // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 00031 // OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00032 // THE SOFTWARE. 00033 // 00034 // We acknowledge the C-to-C Translator from MIT Laboratory for 00035 // Computer Science for inspiring parts of the C-Breeze design. 00036 // 00037 // ---------------------------------------------------------------------- 00038 00039 #ifndef CBZ_LIVE_H 00040 #define CBZ_LIVE_H 00041 00043 // live.h 00044 // 00045 00046 #include "c_breeze.h" 00047 #include "bits.h" 00048 00049 typedef set< declNode * > decl_set; 00050 typedef decl_set::iterator decl_set_p; 00051 00068 class LivenessWalker: public Walker { 00069 public: 00070 LivenessWalker(); 00071 00072 static LivenessWalker * walk(procNode *); 00073 00074 virtual void at_proc (procNode *, Order); 00075 virtual void at_basicblock(basicblockNode *, Order); 00076 virtual void at_threeAddr(threeAddrNode *, Order); 00077 virtual void at_return(returnNode *, Order); 00078 virtual void at_conditiongoto(conditiongotoNode *, Order); 00079 virtual void at_stmt(stmtNode *, Order); 00080 00083 decl_set * defs(stmtNode *); 00084 00087 decl_set * uses(stmtNode *); 00088 00091 decl_set * live_in(stmtNode *); 00092 00095 decl_set * live_out(stmtNode *); 00096 00097 private: 00098 void defUseOperand(threeAddrNode *, operandNode *, bool, bool); 00099 decl_set * bits2decls(Bits *); 00100 00101 int _num_decls; 00102 map<declNode *, int> _decl2num; 00103 // declNode ** _num2decl; 00104 vector<declNode *> _num2decl; 00105 map<stmtNode *, Bits *> _live_in; 00106 map<stmtNode *, Bits *> _live_out; 00107 map<stmtNode *, Bits *> _def; 00108 map<stmtNode *, Bits *> _use; 00109 }; 00110 00114 class LivenessComments : public Walker { 00115 public: 00116 LivenessComments(void); 00117 00118 virtual void at_proc(procNode *, Order); 00119 virtual void at_threeAddr(threeAddrNode *, Order); 00120 virtual void at_basicblock(basicblockNode *, Order); 00121 virtual void at_return(returnNode *, Order); 00122 virtual void at_conditiongoto(conditiongotoNode *, Order); 00123 00124 private: 00125 void comment_stmt(stmtNode *); 00126 00127 LivenessWalker * _lw; 00128 }; 00129 00130 #endif // CBZ_LIVE_H