on the target machine.
@table @code
-@findex ADDRESS_COST
-@item ADDRESS_COST (@var{address})
-An expression giving the cost of an addressing mode that contains
-@var{address}. If not defined, the cost is computed from
-the @var{address} expression and the @code{CONST_COSTS} values.
-
-For most CISC machines, the default cost is a good approximation of the
-true cost of the addressing mode. However, on RISC machines, all
-instructions normally have the same length and execution time. Hence
-all addresses will have equal costs.
-
-In cases where more than one form of an address is known, the form with
-the lowest cost will be used. If multiple forms have the same, lowest,
-cost, the one that is the most complex will be used.
-
-For example, suppose an address that is equal to the sum of a register
-and a constant is used twice in the same basic block. When this macro
-is not defined, the address will be computed in a register and memory
-references will be indirect through that register. On machines where
-the cost of the addressing mode containing the sum is no higher than
-that of a simple indirect reference, this will produce an additional
-instruction and possibly require an additional register. Proper
-specification of this macro eliminates this overhead for such machines.
-
-Similar use of this macro is made in strength reduction of loops.
-
-@var{address} need not be valid as an address. In such a case, the cost
-is not relevant and can be any value; invalid addresses need not be
-assigned a different cost.
-
-On machines where an address involving more than one register is as
-cheap as an address computation involving only one register, defining
-@code{ADDRESS_COST} to reflect this can cause two registers to be live
-over a region of code where only one would have been if
-@code{ADDRESS_COST} were not defined in that manner. This effect should
-be considered in the definition of this macro. Equivalent costs should
-probably only be given to addresses with different numbers of registers
-on machines with lots of registers.
-
-This macro will normally either not be defined or be defined as a
-constant.
-
@findex REGISTER_MOVE_COST
@item REGISTER_MOVE_COST (@var{mode}, @var{from}, @var{to})
A C expression for the cost of moving data of mode @var{mode} from a
processed, and false when @code{rtx_cost} should recurse.
@end deftypefn
+@deftypefn {Target Hook} int TARGET_ADDRESS_COST (rtx @var{address})
+This hook computes the cost of an addressing mode that contains
+@var{address}. If not defined, the cost is computed from
+the @var{address} expression and the @code{TARGET_RTX_COST} hook.
+
+For most CISC machines, the default cost is a good approximation of the
+true cost of the addressing mode. However, on RISC machines, all
+instructions normally have the same length and execution time. Hence
+all addresses will have equal costs.
+
+In cases where more than one form of an address is known, the form with
+the lowest cost will be used. If multiple forms have the same, lowest,
+cost, the one that is the most complex will be used.
+
+For example, suppose an address that is equal to the sum of a register
+and a constant is used twice in the same basic block. When this macro
+is not defined, the address will be computed in a register and memory
+references will be indirect through that register. On machines where
+the cost of the addressing mode containing the sum is no higher than
+that of a simple indirect reference, this will produce an additional
+instruction and possibly require an additional register. Proper
+specification of this macro eliminates this overhead for such machines.
+
+This hook is never called with an invalid address.
+
+On machines where an address involving more than one register is as
+cheap as an address computation involving only one register, defining
+@code{TARGET_ADDRESS_COST} to reflect this can cause two registers to
+be live over a region of code where only one would have been if
+@code{TARGET_ADDRESS_COST} were not defined in that manner. This effect
+should be considered in the definition of this macro. Equivalent costs
+should probably only be given to addresses with different numbers of
+registers on machines with lots of registers.
+@end deftypefn
+
@node Scheduling
@section Adjusting the Instruction Scheduler