gcc/testsuite/gcc.dg/pr58145-2.c

   1 /* PR tree-optimization/58145 */
   2 /* { dg-do compile { target { int32plus } } } */
   3 /* { dg-options "-O2 -fdump-tree-optimized" } */
   4
   5 struct S { unsigned int data : 32; };
   6 struct T { unsigned int data; };
   7 volatile struct S s2;
   8
   9 static inline void
  10 f1 (int val)
  11 {
  12   struct S s = { .data = val };
  13   *(volatile struct S *) 0x880000UL = s;
  14 }
  15
  16 static inline void
  17 f2 (int val)
  18 {
  19   struct T t = { .data = val };
  20   *(volatile struct T *) 0x880000UL = t;
  21 }
  22
  23 static inline void
  24 f3 (int val)
  25 {
  26   *(volatile unsigned int *) 0x880000UL = val;
  27 }
  28
  29 static inline void
  30 f4 (int val)
  31 {
  32   struct S s = { .data = val };
  33   s2 = s;
  34 }
  35
  36 void
  37 f5 (void)
  38 {
  39   int i;
  40   for (i = 0; i < 100; i++)
  41     f1 (0);
  42   for (i = 0; i < 100; i++)
  43     f2 (0);
  44   for (i = 0; i < 100; i++)
  45     f3 (0);
  46   for (i = 0; i < 100; i++)
  47     f4 (0);
  48 }
  49
  50 /* { dg-final { scan-tree-dump-times " ={v} " 4 "optimized" } } */