mirrors this list, so changes to alpha.md must be made at the same time. */
enum processor_type
- {PROCESSOR_EV4, /* 2106[46]{a,} */
+{
+ PROCESSOR_EV4, /* 2106[46]{a,} */
PROCESSOR_EV5, /* 21164{a,pc,} */
- PROCESSOR_EV6}; /* 21264 */
+ PROCESSOR_EV6, /* 21264 */
+ PROCESSOR_MAX
+};
extern enum processor_type alpha_cpu;
/* Define this to be nonzero if shift instructions ignore all but the low-order
few bits. */
#define SHIFT_COUNT_TRUNCATED 1
-
-/* Compute the cost of computing a constant rtl expression RTX
- whose rtx-code is CODE. The body of this macro is a portion
- of a switch statement. If the code is computed here,
- return it with a return statement. Otherwise, break from the switch.
-
- If this is an 8-bit constant, return zero since it can be used
- nearly anywhere with no cost. If it is a valid operand for an
- ADD or AND, likewise return 0 if we know it will be used in that
- context. Otherwise, return 2 since it might be used there later.
- All other constants take at least two insns. */
-
-#define CONST_COSTS(RTX,CODE,OUTER_CODE) \
- case CONST_INT: \
- if (INTVAL (RTX) >= 0 && INTVAL (RTX) < 256) \
- return 0; \
- case CONST_DOUBLE: \
- if ((RTX) == CONST0_RTX (GET_MODE (RTX))) \
- return 0; \
- else if (((OUTER_CODE) == PLUS && add_operand (RTX, VOIDmode)) \
- || ((OUTER_CODE) == AND && and_operand (RTX, VOIDmode))) \
- return 0; \
- else if (add_operand (RTX, VOIDmode) || and_operand (RTX, VOIDmode)) \
- return 2; \
- else \
- return COSTS_N_INSNS (2); \
- case CONST: \
- case SYMBOL_REF: \
- case LABEL_REF: \
- switch (alpha_cpu) \
- { \
- case PROCESSOR_EV4: \
- return COSTS_N_INSNS (3); \
- case PROCESSOR_EV5: \
- case PROCESSOR_EV6: \
- return COSTS_N_INSNS (2); \
- default: abort(); \
- }
-
-/* Provide the costs of a rtl expression. This is in the body of a
- switch on CODE. */
-
-#define RTX_COSTS(X,CODE,OUTER_CODE) \
- case PLUS: case MINUS: \
- if (FLOAT_MODE_P (GET_MODE (X))) \
- switch (alpha_cpu) \
- { \
- case PROCESSOR_EV4: \
- return COSTS_N_INSNS (6); \
- case PROCESSOR_EV5: \
- case PROCESSOR_EV6: \
- return COSTS_N_INSNS (4); \
- default: abort(); \
- } \
- else if (GET_CODE (XEXP (X, 0)) == MULT \
- && const48_operand (XEXP (XEXP (X, 0), 1), VOIDmode)) \
- return (2 + rtx_cost (XEXP (XEXP (X, 0), 0), OUTER_CODE) \
- + rtx_cost (XEXP (X, 1), OUTER_CODE)); \
- break; \
- case MULT: \
- switch (alpha_cpu) \
- { \
- case PROCESSOR_EV4: \
- if (FLOAT_MODE_P (GET_MODE (X))) \
- return COSTS_N_INSNS (6); \
- return COSTS_N_INSNS (23); \
- case PROCESSOR_EV5: \
- if (FLOAT_MODE_P (GET_MODE (X))) \
- return COSTS_N_INSNS (4); \
- else if (GET_MODE (X) == DImode) \
- return COSTS_N_INSNS (12); \
- else \
- return COSTS_N_INSNS (8); \
- case PROCESSOR_EV6: \
- if (FLOAT_MODE_P (GET_MODE (X))) \
- return COSTS_N_INSNS (4); \
- else \
- return COSTS_N_INSNS (7); \
- default: abort(); \
- } \
- case ASHIFT: \
- if (GET_CODE (XEXP (X, 1)) == CONST_INT \
- && INTVAL (XEXP (X, 1)) <= 3) \
- break; \
- /* ... fall through ... */ \
- case ASHIFTRT: case LSHIFTRT: \
- switch (alpha_cpu) \
- { \
- case PROCESSOR_EV4: \
- return COSTS_N_INSNS (2); \
- case PROCESSOR_EV5: \
- case PROCESSOR_EV6: \
- return COSTS_N_INSNS (1); \
- default: abort(); \
- } \
- case IF_THEN_ELSE: \
- switch (alpha_cpu) \
- { \
- case PROCESSOR_EV4: \
- case PROCESSOR_EV6: \
- return COSTS_N_INSNS (2); \
- case PROCESSOR_EV5: \
- return COSTS_N_INSNS (1); \
- default: abort(); \
- } \
- case DIV: case UDIV: case MOD: case UMOD: \
- switch (alpha_cpu) \
- { \
- case PROCESSOR_EV4: \
- if (GET_MODE (X) == SFmode) \
- return COSTS_N_INSNS (34); \
- else if (GET_MODE (X) == DFmode) \
- return COSTS_N_INSNS (63); \
- else \
- return COSTS_N_INSNS (70); \
- case PROCESSOR_EV5: \
- if (GET_MODE (X) == SFmode) \
- return COSTS_N_INSNS (15); \
- else if (GET_MODE (X) == DFmode) \
- return COSTS_N_INSNS (22); \
- else \
- return COSTS_N_INSNS (70); /* ??? */ \
- case PROCESSOR_EV6: \
- if (GET_MODE (X) == SFmode) \
- return COSTS_N_INSNS (12); \
- else if (GET_MODE (X) == DFmode) \
- return COSTS_N_INSNS (15); \
- else \
- return COSTS_N_INSNS (70); /* ??? */ \
- default: abort(); \
- } \
- case MEM: \
- switch (alpha_cpu) \
- { \
- case PROCESSOR_EV4: \
- case PROCESSOR_EV6: \
- return COSTS_N_INSNS (3); \
- case PROCESSOR_EV5: \
- return COSTS_N_INSNS (2); \
- default: abort(); \
- } \
- case NEG: case ABS: \
- if (! FLOAT_MODE_P (GET_MODE (X))) \
- break; \
- /* ... fall through ... */ \
- case FLOAT: case UNSIGNED_FLOAT: case FIX: case UNSIGNED_FIX: \
- case FLOAT_EXTEND: case FLOAT_TRUNCATE: \
- switch (alpha_cpu) \
- { \
- case PROCESSOR_EV4: \
- return COSTS_N_INSNS (6); \
- case PROCESSOR_EV5: \
- case PROCESSOR_EV6: \
- return COSTS_N_INSNS (4); \
- default: abort(); \
- }
\f
/* Control the assembler format that we output. */