* $Id$
*/
-#ifndef __FIRM_IRARCH_H
-#define __FIRM_IRARCH_H
+#ifndef _FIRM_IRARCH_H
+#define _FIRM_IRARCH_H
#include "irnode.h"
*/
typedef struct {
/* Mul optimization */
- int also_use_subs : 1; /**< Use also Subs when resolving muls to shifts */
+ 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 */
- int allow_mulhs : 1; /**< Use the Mulhs operation for division by constant */
- int allow_mulhu : 1; /**< Use the Mulhu operation for division by constant */
+ 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;
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_mod_by_const = 4 /**< optimize Mod into Shift/Add/Mulh */
} arch_dep_opts_t;
/**
* - maximum_shifts
* - highest_shift_amount
*
- * If irn is a Mul with a Const, The constant is inspected, if it meets the
+ * If irn is a Mul with a Const, the constant is inspected if it meets the
* requirements of the three variables stated above. If a Shl/Add/Sub
- * sequence can be generated, that meets these requirements, this expression
- * is returned. In each other case, irn is returned unmodified.
+ * sequence can be generated that meets these requirements, this expression
+ * is returned. In each other case irn is returned unmodified.
*
* @param irn The Firm node to inspect.
* @return A replacement expression for irn.
* This function is driven by the 3 parameters:
* - allow_mulhu
* - allow_mulhs
+ * - max_bits_for_mulh
*
- * If irn is a Div with a Const, The constant is inspected, if it meets the
+ * If irn is a Div with a Const, the constant is inspected if it meets the
* requirements of the variables stated above. If a Shl/Add/Sub/Mulh
- * sequence can be generated, that meets these requirements, this expression
- * is returned. In each other case, irn is returned unmodified.
+ * sequence can be generated that meets these requirements, this expression
+ * is returned. In each other case irn is returned unmodified.
*
* @param irn The Firm node to inspect.
* @return A replacement expression for irn.
* This function is driven by the 3 parameters:
* - allow_mulhu
* - allow_mulhs
+ * - max_bits_for_mulh
*
- * If irn is a Mod with a Const, The constant is inspected, if it meets the
+ * If irn is a Mod with a Const, the constant is inspected if it meets the
* requirements of the variables stated above. If a Shl/Add/Sub/Mulh
- * sequence can be generated, that meets these requirements, this expression
- * is returned. In each other case, irn is returned unmodified.
+ * sequence can be generated that meets these requirements, this expression
+ * is returned. In each other case irn is returned unmodified.
*
* @param irn The Firm node to inspect.
* @return A replacement expression for irn.
* This function is driven by the 3 parameters:
* - allow_mulhu
* - allow_mulhs
+ * - max_bits_for_mulh
*
- * If irn is a DivMod with a Const, The constant is inspected, if it meets the
+ * If irn is a DivMod with a Const, the constant is inspected if it meets the
* requirements of the variables stated above. If a Shl/Add/Sub/Mulh
- * sequence can be generated, that meets these requirements, this expression
- * is returned. In each other case, irn is returned unmodified.
+ * sequence can be generated that meets these requirements, this expression
+ * is returned. In each other case irn is returned unmodified.
*
* @param div After call contains the Firm node div result or NULL.
* @param mod After call contains the Firm node mod result or NULL.
*/
void arch_dep_replace_divmod_by_const(ir_node **div, ir_node **mod, ir_node *irn);
-#endif
+#endif /* _FIRM_IRARCH_H */