1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-ethread-details" } */
       3  /* { dg-final { scan-tree-dump "Registering jump thread" "ethread" } } */
       4  
       5  typedef struct rtx_def *rtx;
       6  typedef const struct rtx_def *const_rtx;
       7  enum rtx_code
       8  {
       9    UNKNOWN, VALUE, DEBUG_EXPR, EXPR_LIST, INSN_LIST, SEQUENCE, ADDRESS,
      10      DEBUG_INSN, INSN, JUMP_INSN, CALL_INSN, BARRIER, CODE_LABEL, NOTE,
      11      COND_EXEC, PARALLEL, ASM_INPUT, ASM_OPERANDS, UNSPEC, UNSPEC_VOLATILE,
      12      ADDR_VEC, ADDR_DIFF_VEC, PREFETCH, SET, USE, CLOBBER, CALL, RETURN,
      13      EH_RETURN, TRAP_IF, CONST_INT, CONST_FIXED, CONST_DOUBLE, CONST_VECTOR,
      14      CONST_STRING, CONST, PC, REG, SCRATCH, SUBREG, STRICT_LOW_PART, CONCAT,
      15      CONCATN, MEM, LABEL_REF, SYMBOL_REF, CC0, IF_THEN_ELSE, COMPARE, PLUS,
      16      MINUS, NEG, MULT, SS_MULT, US_MULT, DIV, SS_DIV, US_DIV, MOD, UDIV, UMOD,
      17      AND, IOR, XOR, NOT, ASHIFT, ROTATE, ASHIFTRT, LSHIFTRT, ROTATERT, SMIN,
      18      SMAX, UMIN, UMAX, PRE_DEC, PRE_INC, POST_DEC, POST_INC, PRE_MODIFY,
      19      POST_MODIFY, NE, EQ, GE, GT, LE, LT, GEU, GTU, LEU, LTU, UNORDERED,
      20      ORDERED, UNEQ, UNGE, UNGT, UNLE, UNLT, LTGT, SIGN_EXTEND, ZERO_EXTEND,
      21      TRUNCATE, FLOAT_EXTEND, FLOAT_TRUNCATE, FLOAT, FIX, UNSIGNED_FLOAT,
      22      UNSIGNED_FIX, FRACT_CONVERT, UNSIGNED_FRACT_CONVERT, SAT_FRACT,
      23      UNSIGNED_SAT_FRACT, ABS, SQRT, BSWAP, FFS, CLZ, CTZ, POPCOUNT, PARITY,
      24      SIGN_EXTRACT, ZERO_EXTRACT, HIGH, LO_SUM, VEC_MERGE, VEC_SELECT,
      25      VEC_CONCAT, VEC_DUPLICATE, SS_PLUS, US_PLUS, SS_MINUS, SS_NEG, US_NEG,
      26      SS_ABS, SS_ASHIFT, US_ASHIFT, US_MINUS, SS_TRUNCATE, US_TRUNCATE, FMA,
      27      VAR_LOCATION, DEBUG_IMPLICIT_PTR, ENTRY_VALUE, LAST_AND_UNUSED_RTX_CODE
      28  };
      29  union rtunion_def
      30  {
      31    rtx rt_rtx;
      32  };
      33  typedef union rtunion_def rtunion;
      34  struct rtx_def
      35  {
      36    int code;
      37    union u
      38    {
      39      rtunion fld[1];
      40    }
      41    u;
      42  };
      43  
      44  unsigned int rtx_cost (rtx, enum rtx_code, unsigned char);
      45  rtx single_set_2 (const_rtx, rtx);
      46  
      47  unsigned
      48  seq_cost (const_rtx seq, unsigned char speed)
      49  {
      50    unsigned cost = 0;
      51    rtx set;
      52    for (; seq; seq = (((seq)->u.fld[2]).rt_rtx))
      53      {
      54        set =
      55  	(((((enum rtx_code) (seq)->code) == INSN)
      56  	  || (((enum rtx_code) (seq)->code) == DEBUG_INSN)
      57  	  || (((enum rtx_code) (seq)->code) == JUMP_INSN)
      58  	  || (((enum rtx_code) (seq)->code) ==
      59  	      CALL_INSN)) ? (((enum rtx_code) ((((seq)->u.fld[4]).rt_rtx))->
      60  			      code) ==
      61  			     SET ? (((seq)->u.fld[4]).
      62  				    rt_rtx) : single_set_2 (seq,
      63  							    (((seq)->u.
      64  							      fld[4]).
      65  							     rt_rtx))) : (rtx)
      66  	 0);
      67        if (set)
      68  	cost += rtx_cost (set, SET, speed);
      69      }
      70  }