gcc/testsuite/gcc.dg/store_merging_13.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target store_merge } */
   3 /* { dg-options "-O2 -fdump-tree-store-merging" } */
   4
   5 struct S { unsigned char a, b; unsigned short c; unsigned char d, e, f, g; unsigned long long h; };
   6
   7 __attribute__((noipa)) void
   8 f1 (struct S *p)
   9 {
  10   p->a = 1;
  11   p->b = 2;
  12   p->c = 3;
  13   p->d = 4;
  14   p->e = 5;
  15   p->f = 6;
  16   p->g = 7;
  17 }
  18
  19 __attribute__((noipa)) void
  20 f2 (struct S *__restrict p, struct S *__restrict q)
  21 {
  22   p->a = q->a;
  23   p->b = q->b;
  24   p->c = q->c;
  25   p->d = q->d;
  26   p->e = q->e;
  27   p->f = q->f;
  28   p->g = q->g;
  29 }
  30
  31 __attribute__((noipa)) void
  32 f3 (struct S *p, struct S *q)
  33 {
  34   unsigned char pa = q->a;
  35   unsigned char pb = q->b;
  36   unsigned short pc = q->c;
  37   unsigned char pd = q->d;
  38   unsigned char pe = q->e;
  39   unsigned char pf = q->f;
  40   unsigned char pg = q->g;
  41   p->a = pa;
  42   p->b = pb;
  43   p->c = pc;
  44   p->d = pd;
  45   p->e = pe;
  46   p->f = pf;
  47   p->g = pg;
  48 }
  49
  50 __attribute__((noipa)) void
  51 f4 (struct S *p, struct S *q)
  52 {
  53   unsigned char pa = p->a | q->a;
  54   unsigned char pb = p->b | q->b;
  55   unsigned short pc = p->c | q->c;
  56   unsigned char pd = p->d | q->d;
  57   unsigned char pe = p->e | q->e;
  58   unsigned char pf = p->f | q->f;
  59   unsigned char pg = p->g | q->g;
  60   p->a = pa;
  61   p->b = pb;
  62   p->c = pc;
  63   p->d = pd;
  64   p->e = pe;
  65   p->f = pf;
  66   p->g = pg;
  67 }
  68
  69 __attribute__((noipa)) void
  70 f5 (struct S *p, struct S *q)
  71 {
  72   unsigned char pa = p->a & q->a;
  73   unsigned char pb = p->b & q->b;
  74   unsigned short pc = p->c & q->c;
  75   unsigned char pd = p->d & q->d;
  76   unsigned char pe = p->e & q->e;
  77   unsigned char pf = p->f & q->f;
  78   unsigned char pg = p->g & q->g;
  79   p->a = pa;
  80   p->b = pb;
  81   p->c = pc;
  82   p->d = pd;
  83   p->e = pe;
  84   p->f = pf;
  85   p->g = pg;
  86 }
  87
  88 __attribute__((noipa)) void
  89 f6 (struct S *p, struct S *q)
  90 {
  91   unsigned char pa = p->a ^ q->a;
  92   unsigned char pb = p->b ^ q->b;
  93   unsigned short pc = p->c ^ q->c;
  94   unsigned char pd = p->d ^ q->d;
  95   unsigned char pe = p->e ^ q->e;
  96   unsigned char pf = p->f ^ q->f;
  97   unsigned char pg = p->g ^ q->g;
  98   p->a = pa;
  99   p->b = pb;
 100   p->c = pc;
 101   p->d = pd;
 102   p->e = pe;
 103   p->f = pf;
 104   p->g = pg;
 105 }
 106
 107 struct S s = { 20, 21, 22, 23, 24, 25, 26, 27 };
 108 struct S t = { 0x71, 0x72, 0x7f04, 0x78, 0x31, 0x32, 0x34, 0xf1f2f3f4f5f6f7f8ULL };
 109 struct S u = { 28, 29, 30, 31, 32, 33, 34, 35 };
 110 struct S v = { 36, 37, 38, 39, 40, 41, 42, 43 };
 111
 112 int
 113 main ()
 114 {
 115   asm volatile ("" : : : "memory");
 116   f1 (&s);
 117   asm volatile ("" : : : "memory");
 118   if (s.a != 1 || s.b != 2 || s.c != 3 || s.d != 4
 119       || s.e != 5 || s.f != 6 || s.g != 7 || s.h != 27)
 120     __builtin_abort ();
 121   f2 (&s, &u);
 122   asm volatile ("" : : : "memory");
 123   if (s.a != 28 || s.b != 29 || s.c != 30 || s.d != 31
 124       || s.e != 32 || s.f != 33 || s.g != 34 || s.h != 27)
 125     __builtin_abort ();
 126   f3 (&s, &v);
 127   asm volatile ("" : : : "memory");
 128   if (s.a != 36 || s.b != 37 || s.c != 38 || s.d != 39
 129       || s.e != 40 || s.f != 41 || s.g != 42 || s.h != 27)
 130     __builtin_abort ();
 131   f4 (&s, &t);
 132   asm volatile ("" : : : "memory");
 133   if (s.a != (36 | 0x71) || s.b != (37 | 0x72)
 134       || s.c != (38 | 0x7f04) || s.d != (39 | 0x78)
 135       || s.e != (40 | 0x31) || s.f != (41 | 0x32)
 136       || s.g != (42 | 0x34) || s.h != 27)
 137     __builtin_abort ();
 138   f3 (&s, &u);
 139   f5 (&s, &t);
 140   asm volatile ("" : : : "memory");
 141   if (s.a != (28 & 0x71) || s.b != (29 & 0x72)
 142       || s.c != (30 & 0x7f04) || s.d != (31 & 0x78)
 143       || s.e != (32 & 0x31) || s.f != (33 & 0x32)
 144       || s.g != (34 & 0x34) || s.h != 27)
 145     __builtin_abort ();
 146   f2 (&s, &v);
 147   f6 (&s, &t);
 148   asm volatile ("" : : : "memory");
 149   if (s.a != (36 ^ 0x71) || s.b != (37 ^ 0x72)
 150       || s.c != (38 ^ 0x7f04) || s.d != (39 ^ 0x78)
 151       || s.e != (40 ^ 0x31) || s.f != (41 ^ 0x32)
 152       || s.g != (42 ^ 0x34) || s.h != 27)
 153     __builtin_abort ();
 154   return 0;
 155 }
 156
 157 /* { dg-final { scan-tree-dump-times "Merging successful" 6 "store-merging" } } */