* config/h8300/h8300.h (RTX_COSTS): Use h8300_shift_costs.
* config/h8300/h8300-protos.h: Add a prototype for
h8300_shift_costs.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@59588
138bc75d-0d04-0410-961f-
82ee72b054a4
+2002-11-27 Kazu Hirata <kazu@cs.umass.edu>
+
+ * config/h8300/h8300.c (h8300_shift_costs): New.
+ * config/h8300/h8300.h (RTX_COSTS): Use h8300_shift_costs.
+ * config/h8300/h8300-protos.h: Add a prototype for
+ h8300_shift_costs.
+
2002-11-27 Jim Wilson <wilson@redhat.com>
* config/rs6000/spe.md (spu_evsplatfi, spu_evsplati): Swap operands
extern const char *output_simode_bld PARAMS ((int, rtx[]));
extern void print_operand_address PARAMS ((FILE *, rtx));
extern int const_costs PARAMS ((rtx, enum rtx_code, enum rtx_code));
+extern int h8300_shift_costs PARAMS ((rtx));
extern void print_operand PARAMS ((FILE *, rtx, int));
extern void final_prescan_insn PARAMS ((rtx, rtx *, int));
extern int do_movsi PARAMS ((rtx[]));
return 4;
}
}
+
+int
+h8300_shift_costs (x)
+ rtx x;
+{
+ rtx operands[4];
+
+ if (GET_MODE (x) != QImode
+ && GET_MODE (x) != HImode
+ && GET_MODE (x) != SImode)
+ return 100;
+
+ operands[0] = NULL;
+ operands[1] = NULL;
+ operands[2] = XEXP (x, 1);
+ operands[3] = x;
+ return compute_a_shift_length (NULL, operands);
+}
\f
/* Documentation for the machine specific operand escapes:
/* Provide the costs of a rtl expression. This is in the body of a
switch on CODE. */
-/* ??? Shifts need to have a *much* higher cost than this. */
-
-#define RTX_COSTS(RTX, CODE, OUTER_CODE) \
- case MOD: \
- case DIV: \
- return 60; \
- case MULT: \
- return 20; \
- case ASHIFT: \
- case ASHIFTRT: \
- case LSHIFTRT: \
- case ROTATE: \
- case ROTATERT: \
- if (GET_MODE (RTX) == HImode) return 2; \
+
+#define RTX_COSTS(RTX, CODE, OUTER_CODE) \
+ case MOD: \
+ case DIV: \
+ return 60; \
+ case MULT: \
+ return 20; \
+ case ASHIFT: \
+ case ASHIFTRT: \
+ case LSHIFTRT: \
+ return COSTS_N_INSNS (h8300_shift_costs (RTX)); \
+ case ROTATE: \
+ case ROTATERT: \
+ if (GET_MODE (RTX) == HImode) return 2; \
return 8;
/* Tell final.c how to eliminate redundant test instructions. */