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https://git.code.sf.net/p/quake/quakeforge
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0b49bd343c
First, it turns out using daglabels wasn't such a workable plan (due to labels being flushed every sblock). Instead, flowvars are used. Each actual variable (whether normal or temp) has a pointer to the flowvar attached to that variable. For each variable, the statements that use or define the variable are recorded in the appropriate set attached to each (flow)variable.
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
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statement.h
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Internal statements
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Copyright (C) 2011 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2011/01/18
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef statement_h
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#define statement_h
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#include "QF/pr_comp.h"
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typedef enum {
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op_symbol,
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op_value,
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op_label,
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op_temp,
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op_pointer,
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op_alias,
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} op_type_e;
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typedef struct {
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struct def_s *def;
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struct flowvar_s *flowvar;
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struct daglabel_s *daglabel;
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} tempop_t;
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typedef struct operand_s {
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struct operand_s *next;
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op_type_e op_type;
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etype_t type; ///< possibly override symbol's type
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int size; ///< for structures
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union {
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struct symbol_s *symbol;
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struct ex_value_s *value;
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struct ex_label_s *label;
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tempop_t tempop;
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struct operand_s *alias;
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} o;
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} operand_t;
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typedef struct statement_s {
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struct statement_s *next;
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const char *opcode;
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operand_t *opa;
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operand_t *opb;
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operand_t *opc;
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struct expr_s *expr; ///< source expression for this statement
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int number; ///< number of this statement in function
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} statement_t;
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typedef struct sblock_s {
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struct sblock_s *next;
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struct reloc_s *relocs;
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struct ex_label_s *labels;
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struct dagnode_s *dag;
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int offset; ///< offset of first statement of block
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int reachable;
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int number; ///< number of this block in flow graph
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statement_t *statements;
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statement_t **tail;
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} sblock_t;
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struct expr_s;
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sblock_t *make_statements (struct expr_s *expr);
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void print_statement (statement_t *s);
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void print_sblock (sblock_t *sblock, const char *filename);
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void dump_sblock (sblock_t *sblock, const char *stage);
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const char *operand_string (operand_t *op);
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#endif//statement_h
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