sparc.md

这是leon3处理器的交叉编译链

		      (pc)))]
  ""
{
  operands[1] = gen_compare_reg (LTU, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "bge"
  [(set (pc)
	(if_then_else (ge (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (TARGET_ARCH64 && sparc_compare_op1 == const0_rtx
      && GET_CODE (sparc_compare_op0) == REG
      && GET_MODE (sparc_compare_op0) == DImode)
    {
      emit_v9_brxx_insn (GE, sparc_compare_op0, operands[0]);
      DONE;
    }
  else if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, GE);
      emit_jump_insn (gen_bne (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (GE, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "bgeu"
  [(set (pc)
	(if_then_else (geu (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  operands[1] = gen_compare_reg (GEU, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "ble"
  [(set (pc)
	(if_then_else (le (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (TARGET_ARCH64 && sparc_compare_op1 == const0_rtx
      && GET_CODE (sparc_compare_op0) == REG
      && GET_MODE (sparc_compare_op0) == DImode)
    {
      emit_v9_brxx_insn (LE, sparc_compare_op0, operands[0]);
      DONE;
    }
  else if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, LE);
      emit_jump_insn (gen_bne (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (LE, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "bleu"
  [(set (pc)
	(if_then_else (leu (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  operands[1] = gen_compare_reg (LEU, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "bunordered"
  [(set (pc)
	(if_then_else (unordered (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1,
				UNORDERED);
      emit_jump_insn (gen_beq (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (UNORDERED, sparc_compare_op0,
				 sparc_compare_op1);
})

(define_expand "bordered"
  [(set (pc)
	(if_then_else (ordered (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, ORDERED);
      emit_jump_insn (gen_bne (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (ORDERED, sparc_compare_op0,
				 sparc_compare_op1);
})

(define_expand "bungt"
  [(set (pc)
	(if_then_else (ungt (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, UNGT);
      emit_jump_insn (gen_bgt (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (UNGT, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "bunlt"
  [(set (pc)
	(if_then_else (unlt (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, UNLT);
      emit_jump_insn (gen_bne (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (UNLT, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "buneq"
  [(set (pc)
	(if_then_else (uneq (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, UNEQ);
      emit_jump_insn (gen_beq (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (UNEQ, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "bunge"
  [(set (pc)
	(if_then_else (unge (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, UNGE);
      emit_jump_insn (gen_bne (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (UNGE, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "bunle"
  [(set (pc)
	(if_then_else (unle (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, UNLE);
      emit_jump_insn (gen_bne (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (UNLE, sparc_compare_op0, sparc_compare_op1);
})

(define_expand "bltgt"
  [(set (pc)
	(if_then_else (ltgt (match_dup 1) (const_int 0))
		      (label_ref (match_operand 0 "" ""))
		      (pc)))]
  ""
{
  if (GET_MODE (sparc_compare_op0) == TFmode && ! TARGET_HARD_QUAD)
    {
      sparc_emit_float_lib_cmp (sparc_compare_op0, sparc_compare_op1, LTGT);
      emit_jump_insn (gen_bne (operands[0]));
      DONE;
    }
  operands[1] = gen_compare_reg (LTGT, sparc_compare_op0, sparc_compare_op1);
})

;; Now match both normal and inverted jump.

;; XXX fpcmp nop braindamage
(define_insn "*normal_branch"
  [(set (pc)
	(if_then_else (match_operator 0 "noov_compare_op"
				      [(reg 100) (const_int 0)])
		      (label_ref (match_operand 1 "" ""))
		      (pc)))]
  ""
{
  return output_cbranch (operands[0], operands[1], 1, 0,
			 final_sequence && INSN_ANNULLED_BRANCH_P (insn),
			 ! final_sequence, insn);
}
  [(set_attr "type" "branch")
   (set_attr "branch_type" "icc")])

;; XXX fpcmp nop braindamage
(define_insn "*inverted_branch"
  [(set (pc)
	(if_then_else (match_operator 0 "noov_compare_op"
				      [(reg 100) (const_int 0)])
		      (pc)
		      (label_ref (match_operand 1 "" ""))))]
  ""
{
  return output_cbranch (operands[0], operands[1], 1, 1,
			 final_sequence && INSN_ANNULLED_BRANCH_P (insn),
			 ! final_sequence, insn);
}
  [(set_attr "type" "branch")
   (set_attr "branch_type" "icc")])

;; XXX fpcmp nop braindamage
(define_insn "*normal_fp_branch"
  [(set (pc)
	(if_then_else (match_operator 1 "comparison_operator"
				      [(match_operand:CCFP 0 "fcc_reg_operand" "c")
				       (const_int 0)])
		      (label_ref (match_operand 2 "" ""))
		      (pc)))]
  ""
{
  return output_cbranch (operands[1], operands[2], 2, 0,
			 final_sequence && INSN_ANNULLED_BRANCH_P (insn),
			 ! final_sequence, insn);
}
  [(set_attr "type" "branch")
   (set_attr "branch_type" "fcc")])

;; XXX fpcmp nop braindamage
(define_insn "*inverted_fp_branch"
  [(set (pc)
	(if_then_else (match_operator 1 "comparison_operator"
				      [(match_operand:CCFP 0 "fcc_reg_operand" "c")
				       (const_int 0)])
		      (pc)
		      (label_ref (match_operand 2 "" ""))))]
  ""
{
  return output_cbranch (operands[1], operands[2], 2, 1,
			 final_sequence && INSN_ANNULLED_BRANCH_P (insn),
			 ! final_sequence, insn);
}
  [(set_attr "type" "branch")
   (set_attr "branch_type" "fcc")])

;; XXX fpcmp nop braindamage
(define_insn "*normal_fpe_branch"
  [(set (pc)
	(if_then_else (match_operator 1 "comparison_operator"
				      [(match_operand:CCFPE 0 "fcc_reg_operand" "c")
				       (const_int 0)])
		      (label_ref (match_operand 2 "" ""))
		      (pc)))]
  ""
{
  return output_cbranch (operands[1], operands[2], 2, 0,
			 final_sequence && INSN_ANNULLED_BRANCH_P (insn),
			 ! final_sequence, insn);
}
  [(set_attr "type" "branch")
   (set_attr "branch_type" "fcc")])

;; XXX fpcmp nop braindamage
(define_insn "*inverted_fpe_branch"
  [(set (pc)
	(if_then_else (match_operator 1 "comparison_operator"
				      [(match_operand:CCFPE 0 "fcc_reg_operand" "c")
				       (const_int 0)])
		      (pc)
		      (label_ref (match_operand 2 "" ""))))]
  ""
{
  return output_cbranch (operands[1], operands[2], 2, 1,
			 final_sequence && INSN_ANNULLED_BRANCH_P (insn),
			 ! final_sequence, insn);
}
  [(set_attr "type" "branch")
   (set_attr "branch_type" "fcc")])

;; SPARC V9-specific jump insns.  None of these are guaranteed to be
;; in the architecture.

;; There are no 32 bit brreg insns.

;; XXX
(define_insn "*normal_int_branch_sp64"
  [(set (pc)
	(if_then_else (match_operator 0 "v9_regcmp_op"
				      [(match_operand:DI 1 "register_operand" "r")
				       (const_int 0)])
		      (label_ref (match_operand 2 "" ""))
		      (pc)))]
  "TARGET_ARCH64"
{
  return output_v9branch (operands[0], operands[2], 1, 2, 0,
			  final_sequence && INSN_ANNULLED_BRANCH_P (insn),
			  ! final_sequence, insn);
}
  [(set_attr "type" "branch")
   (set_attr "branch_type" "reg")])

;; XXX
(define_insn "*inverted_int_branch_sp64"
  [(set (pc)
	(if_then_else (match_operator 0 "v9_regcmp_op"
				      [(match_operand:DI 1 "register_operand" "r")
				       (const_int 0)])
		      (pc)
		      (label_ref (match_operand 2 "" ""))))]
  "TARGET_ARCH64"
{
  return output_v9branch (operands[0], operands[2], 1, 2, 1,
			  final_sequence && INSN_ANNULLED_BRANCH_P (insn),
			  ! final_sequence, insn);
}
  [(set_attr "type" "branch")
   (set_attr "branch_type" "reg")])

;; Load program counter insns.

(define_insn "get_pc"
  [(clobber (reg:SI 15))
   (set (match_operand 0 "register_operand" "=r")
	(unspec [(match_operand 1 "" "") (match_operand 2 "" "")] UNSPEC_GET_PC))]
  "flag_pic && REGNO (operands[0]) == 23"
  "sethi\t%%hi(%a1-4), %0\n\tcall\t%a2\n\tadd\t%0, %%lo(%a1+4), %0"
  [(set_attr "type" "multi")
   (set_attr "length" "3")])


;; Move instructions

(define_expand "movqi"
  [(set (match_operand:QI 0 "general_operand" "")
	(match_operand:QI 1 "general_operand" ""))]
  ""
{
  /* Working with CONST_INTs is easier, so convert
     a double if needed.  */
  if (GET_CODE (operands[1]) == CONST_DOUBLE)
    {
      operands[1] = GEN_INT (trunc_int_for_mode
			     (CONST_DOUBLE_LOW (operands[1]), QImode));
    }

  /* Handle sets of MEM first.  */
  if (GET_CODE (operands[0]) == MEM)
    {
      if (reg_or_0_operand (operands[1], QImode))
	goto movqi_is_ok;

      if (! reload_in_progress)
	{
	  operands[0] = validize_mem (operands[0]);
	  operands[1] = force_reg (QImode, operands[1]);
	}
    }

  /* Fixup TLS cases.  */
  if (tls_symbolic_operand (operands [1]))
    operands[1] = legitimize_tls_address (operands[1]);

  /* Fixup PIC cases.  */
  if (flag_pic)
    {
      if (CONSTANT_P (operands[1])
	  && pic_address_needs_scratch (operands[1]))
	operands[1] = legitimize_pic_address (operands[1], QImode, 0);

      if (symbolic_operand (operands[1], QImode))
	{
	  operands[1] = legitimize_pic_address (operands[1],
						QImode,
						(reload_in_progress ?
						 operands[0] :
						 NULL_RTX));
	  goto movqi_is_ok;
	}
    }

  /* All QI constants require only one insn, so proceed.  */

 movqi_is_ok:
  ;
})

(define_insn "*movqi_insn"
  [(set (match_operand:QI 0 "nonimmediate_operand" "=r,r,m")
	(match_operand:QI 1 "input_operand"   "rI,m,rJ"))]
  "(register_operand (operands[0], QImode)
    || reg_or_0_operand (operands[1], QImode))"
  "@
   mov\t%1, %0
   ldub\t%1, %0
   stb\t%r1, %0"
  [(set_attr "type" "*,load,store")
   (set_attr "us3load_type" "*,3cycle,*")])

(define_expand "movhi"
  [(set (match_operand:HI 0 "general_operand" "")
	(match_operand:HI 1 "general_operand" ""))]
  ""
{
  /* Working with CONST_INTs is easier, so convert
     a double if needed.  */
  if (GET_CODE (operands[1]) == CONST_DOUBLE)
    operands[1] = GEN_INT (CONST_DOUBLE_LOW (operands[1]));

  /* Handle sets of MEM first.  */
  if (GET_CODE (operands[0]) == MEM)
    {
      if (reg_or_0_operand (operands[1], HImode))
	goto movhi_is_ok;

      if (! reload_in_progress)