mips.md.svn-base

PSP用开发必装库GCC4

;; This code macro allows the three shift instructions to be generated
;; from the same template.
(define_code_macro any_shift [ashift ashiftrt lshiftrt])

;; This code macro allows all native floating-point comparisons to be
;; generated from the same template.
(define_code_macro fcond [unordered uneq unlt unle eq lt le])

;; <u> expands to an empty string when doing a signed operation and
;; "u" when doing an unsigned operation.
(define_code_attr u [(sign_extend "") (zero_extend "u")])

;; <su> is like <u>, but the signed form expands to "s" rather than "".
(define_code_attr su [(sign_extend "s") (zero_extend "u")])

;; <optab> expands to the name of the optab for a particular code.
(define_code_attr optab [(ashift "ashl")
			 (ashiftrt "ashr")
			 (lshiftrt "lshr")])

;; <insn> expands to the name of the insn that implements a particular code.
(define_code_attr insn [(ashift "sll")
			(ashiftrt "sra")
			(lshiftrt "srl")])

;; <fcond> is the c.cond.fmt condition associated with a particular code.
(define_code_attr fcond [(unordered "un")
			 (uneq "ueq")
			 (unlt "ult")
			 (unle "ule")
			 (eq "eq")
			 (lt "lt")
			 (le "le")])

;; .........................
;;
;;	Branch, call and jump delay slots
;;
;; .........................

(define_delay (and (eq_attr "type" "branch")
		   (eq (symbol_ref "TARGET_MIPS16") (const_int 0)))
  [(eq_attr "can_delay" "yes")
   (nil)
   (and (eq_attr "branch_likely" "yes")
	(eq_attr "can_delay" "yes"))])

(define_delay (eq_attr "type" "jump")
  [(eq_attr "can_delay" "yes")
   (nil)
   (nil)])

(define_delay (and (eq_attr "type" "call")
		   (eq_attr "jal_macro" "no"))
  [(eq_attr "can_delay" "yes")
   (nil)
   (nil)])

;; Pipeline descriptions.
;;
;; generic.md provides a fallback for processors without a specific
;; pipeline description.  It is derived from the old define_function_unit
;; version and uses the "alu" and "imuldiv" units declared below.
;;
;; Some of the processor-specific files are also derived from old
;; define_function_unit descriptions and simply override the parts of
;; generic.md that don't apply.  The other processor-specific files
;; are self-contained.
(define_automaton "alu,imuldiv")

(define_cpu_unit "alu" "alu")
(define_cpu_unit "imuldiv" "imuldiv")

(include "3000.md")
(include "4000.md")
(include "4100.md")
(include "4130.md")
(include "4300.md")
(include "4600.md")
(include "5000.md")
(include "5400.md")
(include "5500.md")
(include "6000.md")
(include "7000.md")
(include "9000.md")
(include "sb1.md")
(include "sr71k.md")
(include "generic.md")

;;
;;  ....................
;;
;;	CONDITIONAL TRAPS
;;
;;  ....................
;;

(define_insn "trap"
  [(trap_if (const_int 1) (const_int 0))]
  ""
{
  if (ISA_HAS_COND_TRAP)
    return "teq\t$0,$0";
  else if (TARGET_MIPS16)
    return "break 0";
  else
    return "break";
}
  [(set_attr "type" "trap")])

(define_expand "conditional_trap"
  [(trap_if (match_operator 0 "comparison_operator"
			    [(match_dup 2) (match_dup 3)])
	    (match_operand 1 "const_int_operand"))]
  "ISA_HAS_COND_TRAP"
{
  if (GET_MODE_CLASS (GET_MODE (cmp_operands[0])) == MODE_INT
      && operands[1] == const0_rtx)
    {
      mips_gen_conditional_trap (operands);
      DONE;
    }
  else
    FAIL;
})

(define_insn "*conditional_trap<mode>"
  [(trap_if (match_operator:GPR 0 "trap_comparison_operator"
				[(match_operand:GPR 1 "reg_or_0_operand" "dJ")
				 (match_operand:GPR 2 "arith_operand" "dI")])
	    (const_int 0))]
  "ISA_HAS_COND_TRAP"
  "t%C0\t%z1,%2"
  [(set_attr "type" "trap")])

;;
;;  ....................
;;
;;	ADDITION
;;
;;  ....................
;;

(define_insn "add<mode>3"
  [(set (match_operand:ANYF 0 "register_operand" "=f")
	(plus:ANYF (match_operand:ANYF 1 "register_operand" "f")
		   (match_operand:ANYF 2 "register_operand" "f")))]
  ""
  "add.<fmt>\t%0,%1,%2"
  [(set_attr "type" "fadd")
   (set_attr "mode" "<UNITMODE>")])

(define_expand "add<mode>3"
  [(set (match_operand:GPR 0 "register_operand")
	(plus:GPR (match_operand:GPR 1 "register_operand")
		  (match_operand:GPR 2 "arith_operand")))]
  "")

(define_insn "*add<mode>3"
  [(set (match_operand:GPR 0 "register_operand" "=d,d")
	(plus:GPR (match_operand:GPR 1 "register_operand" "d,d")
		  (match_operand:GPR 2 "arith_operand" "d,Q")))]
  "!TARGET_MIPS16"
  "@
    <d>addu\t%0,%1,%2
    <d>addiu\t%0,%1,%2"
  [(set_attr "type" "arith")
   (set_attr "mode" "<MODE>")])

;; We need to recognize MIPS16 stack pointer additions explicitly, since
;; we don't have a constraint for $sp.  These insns will be generated by
;; the save_restore_insns functions.

(define_insn "*add<mode>3_sp1"
  [(set (reg:GPR 29)
	(plus:GPR (reg:GPR 29)
		  (match_operand:GPR 0 "const_arith_operand" "")))]
  "TARGET_MIPS16"
  "<d>addiu\t%$,%$,%0"
  [(set_attr "type" "arith")
   (set_attr "mode" "<MODE>")
   (set (attr "length") (if_then_else (match_operand 0 "m16_simm8_8")
				      (const_int 4)
				      (const_int 8)))])

(define_insn "*add<mode>3_sp2"
  [(set (match_operand:GPR 0 "register_operand" "=d")
	(plus:GPR (reg:GPR 29)
		  (match_operand:GPR 1 "const_arith_operand" "")))]
  "TARGET_MIPS16"
  "<d>addiu\t%0,%$,%1"
  [(set_attr "type" "arith")
   (set_attr "mode" "<MODE>")
   (set (attr "length") (if_then_else (match_operand 1 "m16_uimm<si8_di5>_4")
				      (const_int 4)
				      (const_int 8)))])

(define_insn "*add<mode>3_mips16"
  [(set (match_operand:GPR 0 "register_operand" "=d,d,d")
	(plus:GPR (match_operand:GPR 1 "register_operand" "0,d,d")
		  (match_operand:GPR 2 "arith_operand" "Q,O,d")))]
  "TARGET_MIPS16"
  "@
    <d>addiu\t%0,%2
    <d>addiu\t%0,%1,%2
    <d>addu\t%0,%1,%2"
  [(set_attr "type" "arith")
   (set_attr "mode" "<MODE>")
   (set_attr_alternative "length"
		[(if_then_else (match_operand 2 "m16_simm<si8_di5>_1")
			       (const_int 4)
			       (const_int 8))
		 (if_then_else (match_operand 2 "m16_simm4_1")
			       (const_int 4)
			       (const_int 8))
		 (const_int 4)])])


;; On the mips16, we can sometimes split an add of a constant which is
;; a 4 byte instruction into two adds which are both 2 byte
;; instructions.  There are two cases: one where we are adding a
;; constant plus a register to another register, and one where we are
;; simply adding a constant to a register.

(define_split
  [(set (match_operand:SI 0 "register_operand")
	(plus:SI (match_dup 0)
		 (match_operand:SI 1 "const_int_operand")))]
  "TARGET_MIPS16 && reload_completed && !TARGET_DEBUG_D_MODE
   && REG_P (operands[0])
   && M16_REG_P (REGNO (operands[0]))
   && GET_CODE (operands[1]) == CONST_INT
   && ((INTVAL (operands[1]) > 0x7f
	&& INTVAL (operands[1]) <= 0x7f + 0x7f)
       || (INTVAL (operands[1]) < - 0x80
	   && INTVAL (operands[1]) >= - 0x80 - 0x80))"
  [(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 1)))
   (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))]
{
  HOST_WIDE_INT val = INTVAL (operands[1]);

  if (val >= 0)
    {
      operands[1] = GEN_INT (0x7f);
      operands[2] = GEN_INT (val - 0x7f);
    }
  else
    {
      operands[1] = GEN_INT (- 0x80);
      operands[2] = GEN_INT (val + 0x80);
    }
})

(define_split
  [(set (match_operand:SI 0 "register_operand")
	(plus:SI (match_operand:SI 1 "register_operand")
		 (match_operand:SI 2 "const_int_operand")))]
  "TARGET_MIPS16 && reload_completed && !TARGET_DEBUG_D_MODE
   && REG_P (operands[0])
   && M16_REG_P (REGNO (operands[0]))
   && REG_P (operands[1])
   && M16_REG_P (REGNO (operands[1]))
   && REGNO (operands[0]) != REGNO (operands[1])
   && GET_CODE (operands[2]) == CONST_INT
   && ((INTVAL (operands[2]) > 0x7
	&& INTVAL (operands[2]) <= 0x7 + 0x7f)
       || (INTVAL (operands[2]) < - 0x8
	   && INTVAL (operands[2]) >= - 0x8 - 0x80))"
  [(set (match_dup 0) (plus:SI (match_dup 1) (match_dup 2)))
   (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 3)))]
{
  HOST_WIDE_INT val = INTVAL (operands[2]);

  if (val >= 0)
    {
      operands[2] = GEN_INT (0x7);
      operands[3] = GEN_INT (val - 0x7);
    }
  else
    {
      operands[2] = GEN_INT (- 0x8);
      operands[3] = GEN_INT (val + 0x8);
    }
})

(define_split
  [(set (match_operand:DI 0 "register_operand")
	(plus:DI (match_dup 0)
		 (match_operand:DI 1 "const_int_operand")))]
  "TARGET_MIPS16 && TARGET_64BIT && reload_completed && !TARGET_DEBUG_D_MODE
   && REG_P (operands[0])
   && M16_REG_P (REGNO (operands[0]))
   && GET_CODE (operands[1]) == CONST_INT
   && ((INTVAL (operands[1]) > 0xf
	&& INTVAL (operands[1]) <= 0xf + 0xf)
       || (INTVAL (operands[1]) < - 0x10
	   && INTVAL (operands[1]) >= - 0x10 - 0x10))"
  [(set (match_dup 0) (plus:DI (match_dup 0) (match_dup 1)))
   (set (match_dup 0) (plus:DI (match_dup 0) (match_dup 2)))]
{
  HOST_WIDE_INT val = INTVAL (operands[1]);

  if (val >= 0)
    {
      operands[1] = GEN_INT (0xf);
      operands[2] = GEN_INT (val - 0xf);
    }
  else
    {
      operands[1] = GEN_INT (- 0x10);
      operands[2] = GEN_INT (val + 0x10);
    }
})

(define_split
  [(set (match_operand:DI 0 "register_operand")
	(plus:DI (match_operand:DI 1 "register_operand")
		 (match_operand:DI 2 "const_int_operand")))]
  "TARGET_MIPS16 && TARGET_64BIT && reload_completed && !TARGET_DEBUG_D_MODE
   && REG_P (operands[0])
   && M16_REG_P (REGNO (operands[0]))
   && REG_P (operands[1])
   && M16_REG_P (REGNO (operands[1]))
   && REGNO (operands[0]) != REGNO (operands[1])
   && GET_CODE (operands[2]) == CONST_INT
   && ((INTVAL (operands[2]) > 0x7
	&& INTVAL (operands[2]) <= 0x7 + 0xf)
       || (INTVAL (operands[2]) < - 0x8
	   && INTVAL (operands[2]) >= - 0x8 - 0x10))"
  [(set (match_dup 0) (plus:DI (match_dup 1) (match_dup 2)))
   (set (match_dup 0) (plus:DI (match_dup 0) (match_dup 3)))]
{
  HOST_WIDE_INT val = INTVAL (operands[2]);

  if (val >= 0)
    {
      operands[2] = GEN_INT (0x7);
      operands[3] = GEN_INT (val - 0x7);
    }
  else
    {
      operands[2] = GEN_INT (- 0x8);
      operands[3] = GEN_INT (val + 0x8);
    }
})

(define_insn "*addsi3_extended"
  [(set (match_operand:DI 0 "register_operand" "=d,d")
	(sign_extend:DI
	     (plus:SI (match_operand:SI 1 "register_operand" "d,d")
		      (match_operand:SI 2 "arith_operand" "d,Q"))))]
  "TARGET_64BIT && !TARGET_MIPS16"
  "@
    addu\t%0,%1,%2
    addiu\t%0,%1,%2"
  [(set_attr "type" "arith")
   (set_attr "mode" "SI")])

;; Split this insn so that the addiu splitters can have a crack at it.
;; Use a conservative length estimate until the split.
(define_insn_and_split "*addsi3_extended_mips16"
  [(set (match_operand:DI 0 "register_operand" "=d,d,d")
	(sign_extend:DI
	     (plus:SI (match_operand:SI 1 "register_operand" "0,d,d")
		      (match_operand:SI 2 "arith_operand" "Q,O,d"))))]
  "TARGET_64BIT && TARGET_MIPS16"
  "#"
  "&& reload_completed"
  [(set (match_dup 3) (plus:SI (match_dup 1) (match_dup 2)))]
  { operands[3] = gen_lowpart (SImode, operands[0]); }
  [(set_attr "type" "arith")
   (set_attr "mode" "SI")
   (set_attr "extended_mips16" "yes")])

;;
;;  ....................
;;
;;	SUBTRACTION
;;
;;  ....................
;;

(define_insn "sub<mode>3"
  [(set (match_operand:ANYF 0 "register_operand" "=f")
	(minus:ANYF (match_operand:ANYF 1 "register_operand" "f")
		    (match_operand:ANYF 2 "register_operand" "f")))]
  ""
  "sub.<fmt>\t%0,%1,%2"
  [(set_attr "type" "fadd")
   (set_attr "mode" "<UNITMODE>")])

(define_insn "sub<mode>3"
  [(set (match_operand:GPR 0 "register_operand" "=d")
	(minus:GPR (match_operand:GPR 1 "register_operand" "d")
		   (match_operand:GPR 2 "register_operand" "d")))]
  ""
  "<d>subu\t%0,%1,%2"
  [(set_attr "type" "arith")
   (set_attr "mode" "<MODE>")])

(define_insn "*subsi3_extended"
  [(set (match_operand:DI 0 "register_operand" "=d")
	(sign_extend:DI