becopyheur: Avoid unnecessary bitset copying.

[libfirm] / ir / tv / tv_t.h

diff --git a/ir/tv/tv_t.h b/ir/tv/tv_t.h
index aff58fa..54f7db6 100644 (file)
--- a/ir/tv/tv_t.h
+++ b/ir/tv/tv_t.h
@@ -1,13 +1,120 @@
-/* Declarations for Target Values.
-   Copyright (C) 1995, 1996 Christian von Roques */
+/*
+ * This file is part of libFirm.
+ * Copyright (C) 2012 University of Karlsruhe.
+ */
 
-#ifndef _TV_T_H
-#define _TV_T_H
+/**
+ * @file
+ * @brief    Representation of and static computations on target machine
+ *           values -- private header.
+ * @date     2003
+ * @author   Mathias Heil
+ */
+#ifndef FIRM_TV_TV_T_H
+#define FIRM_TV_TV_T_H
 
-# include "tv.h"
-# include "misc.h"
+#include "firm_common.h"
 
-int tarval_print (XP_PAR1, const xprintf_info *, XP_PARN);
+#include <assert.h>
+#include "irmode.h"
+#include "tv.h"
 
+/**
+ * Initialization of the tarval module.
+ *
+ * Call before init_mode().
+ *
+ * @param null_value
+ *            The reference mode NULL value, typical 0l
+ * @param support_quad_precision
+ *            If non-zero, activate support for quad precision
+ */
+void init_tarval_1(long null_value, int support_quad_precision);
 
-#endif
+/**
+ * Initialization of the tarval module.
+ *
+ * Call after init_mode().
+ */
+void init_tarval_2(void);
+
+/**
+ * Free all memory occupied by the tarval module.
+ */
+void finish_tarval(void);
+
+/**
+ * This struct represents the afore mentioned tarvals.
+ *
+ * A tarval struct consists of an internal representation of the
+ * value and some additional fields further describing the value.
+ *
+ * ATTRIBUTES:
+ *   - ir_mode *mode     The mode of the stored value
+ *   - void *value       The internal representation
+ *
+ * @sa
+ *   irmode.h for predefined modes
+ */
+struct ir_tarval {
+       firm_kind  kind;    /**< must be k_tarval */
+       ir_mode    *mode;   /**< the mode of the stored value */
+       const void *value;  /**< the value stored in an internal way... */
+       size_t     length;  /**< the length of the stored value */
+};
+
+/* inline functions */
+/*
+ * Access routines for tarval fields ========================================
+ */
+static inline ir_mode *_get_tarval_mode(const ir_tarval *tv)
+{
+       assert(tv);
+       return tv->mode;
+}
+
+static inline ir_tarval *_get_tarval_bad(void)
+{
+       return tarval_bad;
+}
+
+static inline ir_tarval *_get_tarval_undefined(void)
+{
+       return tarval_undefined;
+}
+
+static inline ir_tarval *_get_tarval_b_false(void)
+{
+       return tarval_b_false;
+}
+
+static inline ir_tarval *_get_tarval_b_true(void)
+{
+       return tarval_b_true;
+}
+
+static inline ir_tarval *_get_tarval_reachable(void)
+{
+       return tarval_reachable;
+}
+
+static inline ir_tarval *_get_tarval_unreachable(void)
+{
+       return tarval_unreachable;
+}
+
+static inline int _is_tarval(const void *thing)
+{
+       return get_kind(thing) == k_tarval;
+}
+
+#define get_tarval_mode(tv)      _get_tarval_mode(tv)
+#define get_tarval_bad()         _get_tarval_bad()
+#define get_tarval_undefined()   _get_tarval_undefined()
+#define get_tarval_b_false()     _get_tarval_b_false()
+#define get_tarval_b_true()      _get_tarval_b_true()
+#define get_tarval_unreachable() _get_tarval_unreachable()
+#define get_tarval_reachable()   _get_tarval_reachable()
+#define is_tarval(thing)         _is_tarval(thing)
+
+#endif /* FIRM_TV_TV_T_H */