X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=include%2Flibfirm%2Firarch.h;h=79071db40d4f78afefa701c093761d892052c09b;hb=fa9c992b5f23e7a059ac91fdd04b409b951ebcc4;hp=2a36ac28fe9799c83597a30c1e7c68940f2a797c;hpb=1ec30d95387eb392ba5a1adc7958ebd91383d59c;p=libfirm

diff --git a/include/libfirm/irarch.h b/include/libfirm/irarch.h
index 2a36ac28f..79071db40 100644
--- a/include/libfirm/irarch.h
+++ b/include/libfirm/irarch.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -29,44 +29,68 @@
 
 #include "firm_types.h"
 
+/**
+ * The Multiplication replacement can consist of the following instructions.
+ */
+typedef enum instr {
+	LEA,   /**< the LEA instruction */
+	SHIFT, /**< the SHIFT instruction */
+	SUB,   /**< the SUB instruction */
+	ADD,   /**< the ADD instruction */
+	ZERO,  /**< creates a ZERO constant */
+	MUL,   /**< the original MUL instruction */
+	ROOT   /**< the ROOT value that is multiplied */
+} insn_kind;
+
+/**
+ * A Callback for evaluating the costs of an instruction.
+ *
+ * @param kind   the instruction
+ * @param tv     for MUL instruction, the multiplication constant
+ *
+ * @return the costs of this instruction
+ */
+typedef int (*evaluate_costs_func)(insn_kind kind, tarval *tv);
+
 /**
  * A parameter structure that drives the machine dependent Firm
  * optimizations.
  */
-typedef struct {
-  /* Mul optimization */
-  unsigned also_use_subs : 1;           /**< Use also Subs when resolving Muls to shifts */
-  int maximum_shifts;                   /**< The maximum number of shifts that shall be inserted for a mul. */
-  unsigned highest_shift_amount;        /**< The highest shift amount you want to
-			                     tolerate. Muls which would require a higher
-			                     shift constant are left. */
-
-  /* Div/Mod optimization */
-  unsigned allow_mulhs   : 1;   /**< Use the Mulhs operation for division by constant */
-  unsigned allow_mulhu   : 1;   /**< Use the Mulhu operation for division by constant */
-  int max_bits_for_mulh;        /**< Maximum number of bits the Mulh operation can take.
-                                     Modes with higher amount of bits will use Mulh */
-} arch_dep_params_t;
+struct ir_settings_arch_dep_t {
+	/* Mul optimization */
+	unsigned also_use_subs : 1;    /**< Use also Subs when resolving Muls to shifts */
+	unsigned maximum_shifts;            /**< The maximum number of shifts that shall be inserted for a mul. */
+	unsigned highest_shift_amount; /**< The highest shift amount you want to
+	                                    tolerate. Muls which would require a higher
+	                                    shift constant are left. */
+	evaluate_costs_func evaluate;  /**< Evaluate the costs of a generated instruction. */
+
+	/* Div/Mod optimization */
+	unsigned allow_mulhs   : 1;    /**< Use the Mulhs operation for division by constant */
+	unsigned allow_mulhu   : 1;    /**< Use the Mulhu operation for division by constant */
+	unsigned max_bits_for_mulh;         /**< Maximum number of bits the Mulh operation can take.
+	                                    Modes with higher amount of bits will use Mulh */
+};
 
 /**
  * A factory function, that provides architecture parameters for
  * machine dependent optimizations.
  */
-typedef const arch_dep_params_t *(*arch_dep_params_factory_t)(void);
+typedef const ir_settings_arch_dep_t *(*arch_dep_params_factory_t)(void);
 
 /**
  * A default parameter factory for testing purposes.
  */
-const arch_dep_params_t *arch_dep_default_factory(void);
+const ir_settings_arch_dep_t *arch_dep_default_factory(void);
 
 /**
  * Optimization flags.
  */
 typedef enum {
-  arch_dep_none         = 0,
-  arch_dep_mul_to_shift = 1,	/**< optimize Mul into Shift/Add/Sub */
-  arch_dep_div_by_const = 2,	/**< optimize Div into Shift/Add/Mulh */
-  arch_dep_mod_by_const = 4	    /**< optimize Mod into Shift/Add/Mulh */
+	arch_dep_none         = 0,
+	arch_dep_mul_to_shift = 1,  /**< optimize Mul into Shift/Add/Sub */
+	arch_dep_div_by_const = 2,  /**< optimize Div into Shift/Add/Mulh */
+	arch_dep_mod_by_const = 4   /**< optimize Mod into Shift/Add/Mulh */
 } arch_dep_opts_t;
 
 /**