old-autovect-branch/gcc/testsuite/gcc.c-torture/execute/pr23135.c

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