1  /* PR middle-end/21265
       2     Test whether tail call information is propagated through builtin
       3     expanders.  */
       4  /* { dg-do compile } */
       5  /* { dg-skip-if "" { { i?86-*-* x86_64-*-* } && { ia32 && { ! nonpic } } } } */
       6  /* { dg-options "-O2" } */
       7  
       8  typedef __SIZE_TYPE__ size_t;
       9  
      10  #define F(n, rettype, name, args, callargs) \
      11  extern rettype name args;				\
      12  rettype test##n args					\
      13  {							\
      14    return name callargs;					\
      15  }
      16  #define F1(n, rettype, name, t1, callargs) \
      17    F (n, rettype, name, (t1 a1), callargs)
      18  #define F2(n, rettype, name, t1, t2, callargs) \
      19    F (n, rettype, name, (t1 a1, t2 a2), callargs)
      20  #define F3(n, rettype, name, t1, t2, t3, callargs) \
      21    F (n, rettype, name, (t1 a1, t2 a2, t3 a3), callargs)
      22  
      23  F3 (1a, void *, memcpy, void *, const void *, size_t, (a1, a2, a3))
      24  F3 (1b, void *, memcpy, void *, const void *, size_t, (a1, a2, 10))
      25  F3 (2a, void *, mempcpy, void *, const void *, size_t, (a1, a2, a3))
      26  F3 (2b, void *, mempcpy, void *, const void *, size_t, (a1, a2, 10))
      27  F3 (3a, void *, memmove, void *, const void *, size_t, (a1, a2, a3))
      28  F3 (3b, void *, memmove, void *, const void *, size_t, (a1, "abcdefghijklmno", a3))
      29  F3 (4a, void *, memset, void *, int, size_t, (a1, a2, a3))
      30  F3 (4b, void *, memset, void *, int, size_t, (a1, a2, 156))
      31  F3 (4c, void *, memset, void *, int, size_t, (a1, 0, a3))
      32  F3 (4d, void *, memset, void *, int, size_t, (a1, 0, 10000))
      33  F3 (5a, int, memcmp, const void *, const void *, size_t, (a1, a2, a3))
      34  F3 (5b, int, memcmp, const void *, const void *, size_t, (a1, "abcdefghijkl", a3))
      35  F2 (6, char *, strcpy, char *, const char *, (a1, a2))
      36  F2 (7, char *, stpcpy, char *, const char *, (a1, a2))
      37  F3 (8, char *, strncpy, char *, const char *, size_t, (a1, a2, a3))
      38  F3 (9, char *, stpncpy, char *, const char *, size_t, (a1, a2, a3))
      39  F2 (10, char *, strcat, char *, const char *, (a1, a2))
      40  F3 (11, char *, strncat, char *, const char *, size_t, (a1, a2, a3))
      41  F1 (12a, size_t, strlen, const char *, (a1))
      42  F1 (12b, size_t, strlen, const char *, ("foobar"))
      43  F2 (13a, int, strcmp, const char *, const char *, (a1, a2))
      44  F2 (13b, int, strcmp, const char *, const char *, (a1, "abcdefghijklm"))
      45  F3 (14a, int, strncmp, const char *, const char *, size_t, (a1, a2, a3))
      46  F3 (14b, int, strncmp, const char *, const char *, size_t, (a1, "abcdefghijklm", 10))
      47  F2 (15, char *, strchr, const char *, int, (a1, a2))
      48  
      49  /* All the calls above should be tail call optimized on i?86/x86-64.  */
      50  /* { dg-final { scan-assembler-not "call" { target i?86-*-linux* i?86-*-gnu* x86_64-*-linux* } } } */