modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/execute/pr23135.c (about)

     1  /* Based on execute/simd-1.c, modified by joern.rennecke@st.com to
     2     trigger a reload bug.  Verified for gcc mainline from 20050722 13:00 UTC
     3     for sh-elf -m4 -O2.  */
     4  /* { dg-options "-Wno-psabi" } */
     5  
     6  #ifndef STACK_SIZE
     7  #define STACK_SIZE (256*1024)
     8  #endif
     9  
    10  extern void abort (void);
    11  extern void exit (int);
    12  
    13  typedef struct { char c[STACK_SIZE/2]; } big_t;
    14  
    15  typedef int __attribute__((mode(SI))) __attribute__((vector_size (8))) vecint;
    16  typedef int __attribute__((mode(SI))) siint;
    17  
    18  vecint i = { 150, 100 };
    19  vecint j = { 10, 13 };
    20  vecint k;
    21  
    22  union {
    23    vecint v;
    24    siint i[2];
    25  } res;
    26  
    27  void
    28  verify (siint a1, siint a2, siint b1, siint b2, big_t big)
    29  {
    30    if (a1 != b1
    31        || a2 != b2)
    32      abort ();
    33  }
    34  
    35  int
    36  main ()
    37  {
    38    big_t big;
    39    vecint k0, k1, k2, k3, k4, k5, k6, k7;
    40  
    41    k0 = i + j;
    42    res.v = k0;
    43  
    44    verify (res.i[0], res.i[1], 160, 113, big);
    45  
    46    k1 = i * j;
    47    res.v = k1;
    48  
    49    verify (res.i[0], res.i[1], 1500, 1300, big);
    50  
    51    k2 = i / j;
    52  /* This is the observed failure - reload 0 has the wrong type and thus the
    53     conflict with reload 1 is missed:
    54  
    55  (insn:HI 94 92 96 1 pr23135.c:46 (parallel [
    56              (set (subreg:SI (reg:DI 253) 0)
    57                  (div:SI (reg:SI 4 r4)
    58                      (reg:SI 5 r5)))
    59              (clobber (reg:SI 146 pr))
    60              (clobber (reg:DF 64 fr0))
    61              (clobber (reg:DF 66 fr2))
    62              (use (reg:PSI 151 ))
    63              (use (reg/f:SI 256))
    64          ]) 60 {divsi3_i4} (insn_list:REG_DEP_TRUE 90 (insn_list:REG_DEP_TRUE 89
    65  (insn_list:REG_DEP_TRUE 42 (insn_list:REG_DEP_TRUE 83 (insn_list:REG_DEP_TRUE 92
    66   (insn_list:REG_DEP_TRUE 91 (nil)))))))
    67      (expr_list:REG_DEAD (reg:SI 4 r4)
    68          (expr_list:REG_DEAD (reg:SI 5 r5)
    69              (expr_list:REG_UNUSED (reg:DF 66 fr2)
    70                  (expr_list:REG_UNUSED (reg:DF 64 fr0)
    71                      (expr_list:REG_UNUSED (reg:SI 146 pr)
    72                          (insn_list:REG_RETVAL 91 (nil))))))))
    73  
    74  Reloads for insn # 94
    75  Reload 0: reload_in (SI) = (plus:SI (reg/f:SI 14 r14)
    76                                                      (const_int 64 [0x40]))
    77          GENERAL_REGS, RELOAD_FOR_OUTADDR_ADDRESS (opnum = 0)
    78          reload_in_reg: (plus:SI (reg/f:SI 14 r14)
    79                                                      (const_int 64 [0x40]))
    80          reload_reg_rtx: (reg:SI 3 r3)
    81  Reload 1: GENERAL_REGS, RELOAD_FOR_OUTPUT_ADDRESS (opnum = 0), can't combine, se
    82  condary_reload_p
    83          reload_reg_rtx: (reg:SI 3 r3)
    84  Reload 2: reload_out (SI) = (mem:SI (plus:SI (plus:SI (reg/f:SI 14 r14)
    85                                                              (const_int 64 [0x40]))
    86                                                          (const_int 28 [0x1c])) [ 16 S8 A32])
    87          FPUL_REGS, RELOAD_FOR_OUTPUT (opnum = 0)
    88          reload_out_reg: (subreg:SI (reg:DI 253) 0)
    89          reload_reg_rtx: (reg:SI 150 fpul)
    90          secondary_out_reload = 1
    91  
    92  Reload 3: reload_in (SI) = (symbol_ref:SI ("__sdivsi3_i4") [flags 0x1])
    93          GENERAL_REGS, RELOAD_FOR_INPUT (opnum = 1), can't combine
    94          reload_in_reg: (reg/f:SI 256)
    95          reload_reg_rtx: (reg:SI 3 r3)
    96    */
    97  
    98  
    99    res.v = k2;
   100  
   101    verify (res.i[0], res.i[1], 15, 7, big);
   102  
   103    k3 = i & j;
   104    res.v = k3;
   105  
   106    verify (res.i[0], res.i[1], 2, 4, big);
   107  
   108    k4 = i | j;
   109    res.v = k4;
   110  
   111    verify (res.i[0], res.i[1], 158, 109, big);
   112  
   113    k5 = i ^ j;
   114    res.v = k5;
   115  
   116    verify (res.i[0], res.i[1], 156, 105, big);
   117  
   118    k6 = -i;
   119    res.v = k6;
   120    verify (res.i[0], res.i[1], -150, -100, big);
   121  
   122    k7 = ~i;
   123    res.v = k7;
   124    verify (res.i[0], res.i[1], -151, -101, big);
   125  
   126    k = k0 + k1 + k3 + k4 + k5 + k6 + k7;
   127    res.v = k;
   128    verify (res.i[0], res.i[1], 1675, 1430, big);
   129  
   130    k = k0 * k1 * k3 * k4 * k5 * k6 * k7;
   131    res.v = k;
   132    verify (res.i[0], res.i[1], 1456467968, -1579586240, big);
   133  
   134    k = k0 / k1 / k2 / k3 / k4 / k5 / k6 / k7;
   135    res.v = k;
   136    verify (res.i[0], res.i[1], 0, 0, big);
   137  
   138    exit (0);
   139  }