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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.target/] [alpha/] [pr39740.c] - Blame information for rev 327

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Line No. Rev Author Line
1 312 jeremybenn 
/* { dg-do compile } */
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/* { dg-options "-O3 -std=c99 -mexplicit-relocs" } */
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typedef int R_len_t;
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typedef unsigned int SEXPTYPE;
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struct sxpinfo_struct
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{
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  SEXPTYPE type:5;
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};
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struct vecsxp_struct
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{
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  R_len_t length;
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  R_len_t truelength;
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};
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struct listsxp_struct
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{
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  struct SEXPREC *carval;
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  struct SEXPREC *cdrval;
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  struct SEXPREC *tagval;
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};
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typedef struct SEXPREC
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{
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  struct sxpinfo_struct sxpinfo;
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  union
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  {
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    struct listsxp_struct listsxp;
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  } u;
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} SEXPREC, *SEXP;
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typedef struct VECTOR_SEXPREC
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{
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  struct vecsxp_struct vecsxp;
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} VECTOR_SEXPREC, *VECSEXP;
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typedef union
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{
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  VECTOR_SEXPREC s;
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  double align;
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} SEXPREC_ALIGN;
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extern SEXP R_NilValue;
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extern SEXP R_MissingArg;
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int Rf_envlength (SEXP rho);
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SEXP Rf_protect (SEXP);
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const char *Rf_translateChar (SEXP);
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inline R_len_t
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Rf_length (SEXP s)
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{
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  int i;
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  switch (((s)->sxpinfo.type))
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    {
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    case 0:
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      return 0;
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    case 24:
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      return (((VECSEXP) (s))->vecsxp.length);
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    case 6:
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    case 17:
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      i = 0;
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      while (s != ((void *) 0) && s != R_NilValue)
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        {
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          i++;
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          s = ((s)->u.listsxp.cdrval);
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        }
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      return i;
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    case 4:
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      return Rf_envlength (s);
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    default:
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      return 1;
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    }
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}
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inline SEXP
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Rf_lang3 (SEXP s, SEXP t, SEXP u)
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{
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  return s;
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}
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typedef SEXP (*CCODE) (SEXP, SEXP, SEXP, SEXP);
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static SEXP PlusSymbol;
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static SEXP MinusSymbol;
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static SEXP DivideSymbol;
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int isZero (SEXP s);
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SEXP PP (SEXP s);
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SEXP AddParens (SEXP expr);
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SEXP Rf_install ();
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static int
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isUminus (SEXP s)
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{
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  if (((s)->sxpinfo.type) == 6 && ((s)->u.listsxp.carval) == MinusSymbol)
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    {
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      switch (Rf_length (s))
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        {
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        case 2:
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          return 1;
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        case 3:
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          if (((((((s)->u.listsxp.cdrval))->u.listsxp.cdrval))->u.listsxp.
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               carval) == R_MissingArg)
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            return 1;
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          else
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            return 0;
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        }
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    }
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  else
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    return 0;
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}
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static SEXP
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simplify (SEXP fun, SEXP arg1, SEXP arg2)
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{
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  SEXP ans;
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  if (fun == PlusSymbol)
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    {
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      if (isZero (arg1))
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        ans = arg2;
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      else if (isUminus (arg1))
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        ans =
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          simplify (MinusSymbol, arg2,
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                    ((((arg1)->u.listsxp.cdrval))->u.listsxp.carval));
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      else if (isUminus (arg2))
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        ans =
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          simplify (MinusSymbol, arg1,
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                    ((((arg2)->u.listsxp.cdrval))->u.listsxp.carval));
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    }
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  else if (fun == DivideSymbol)
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    {
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      ans = Rf_lang3 (DivideSymbol, arg1, arg2);
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    }
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  return ans;
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}
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static SEXP
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D (SEXP expr, SEXP var)
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{
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  return simplify (PlusSymbol,
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                   PP (D
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                       (((((expr)->u.listsxp.cdrval))->u.listsxp.carval),
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                        var)),
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                   PP (D
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                       (((((((expr)->u.listsxp.cdrval))->u.listsxp.cdrval))->
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                         u.listsxp.carval), var)));
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}
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SEXP
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do_D (SEXP call, SEXP op, SEXP args, SEXP env)
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{
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  SEXP expr, var;
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  var = Rf_install ();
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  expr = ((args)->u.listsxp.carval);
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  Rf_protect (expr = D (expr, var));
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  expr = AddParens (expr);
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  return expr;
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}

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