fix some warnings, represent mode size as unsigned value

[libfirm] / include / libfirm / irarch.h

diff --git a/include/libfirm/irarch.h b/include/libfirm/irarch.h
index c71183f..a2a4313 100644 (file)
--- a/include/libfirm/irarch.h
+++ b/include/libfirm/irarch.h
@@ -59,7 +59,7 @@ typedef int (*evaluate_costs_func)(insn_kind kind, tarval *tv);
 struct ir_settings_arch_dep_t {
        /* 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 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. */
@@ -68,7 +68,7 @@ struct ir_settings_arch_dep_t {
        /* 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.
+       unsigned max_bits_for_mulh;         /**< Maximum number of bits the Mulh operation can take.
                                            Modes with higher amount of bits will use Mulh */
 };