gcc/testsuite/gcc.dg/guality/rotatetest.c

   1 /* { dg-do run { target { { i?86-*-* x86_64-*-* } && lp64 } } } */
   2 /* { dg-options "-g" } */
   3
   4 volatile int vv;
   5
   6 __attribute__((noclone, noinline)) long
   7 f1 (unsigned long x)
   8 {
   9   long f = (x << 12) | (x >> (64 - 12));
  10   long g = f;
  11   asm volatile ("" : "+r" (f));
  12   vv++;         /* { dg-final { gdb-test 12 "g" "f" } } */
  13   return f;
  14 }
  15
  16 __attribute__((noclone, noinline)) long
  17 f2 (unsigned long x, int y)
  18 {
  19   long f = (x << y) | (x >> (64 - y));
  20   long g = f;
  21   asm volatile ("" : "+r" (f));
  22   vv++;         /* { dg-final { gdb-test 22 "g" "f" } } */
  23   return f;
  24 }
  25
  26 __attribute__((noclone, noinline)) long
  27 f3 (unsigned long x, int y)
  28 {
  29   long f = (x >> y) | (x << (64 - y));
  30   long g = f;
  31   asm volatile ("" : "+r" (f));
  32   vv++;         /* { dg-final { gdb-test 32 "g" "f" } } */
  33   return f;
  34 }
  35
  36 __attribute__((noclone, noinline)) unsigned int
  37 f4 (unsigned int x)
  38 {
  39   unsigned int f = (x << 12) | (x >> (32 - 12));
  40   unsigned int g = f;
  41   asm volatile ("" : "+r" (f));
  42   vv++;         /* { dg-final { gdb-test 42 "g" "f" } } */
  43   return f;
  44 }
  45
  46 __attribute__((noclone, noinline)) unsigned int
  47 f5 (unsigned int x, int y)
  48 {
  49   unsigned int f = (x << y) | (x >> (32 - y));
  50   unsigned int g = f;
  51   asm volatile ("" : "+r" (f));
  52   vv++;         /* { dg-final { gdb-test 52 "g" "f" } } */
  53   return f;
  54 }
  55
  56 __attribute__((noclone, noinline)) unsigned int
  57 f6 (unsigned int x, int y)
  58 {
  59   unsigned int f = (x >> y) | (x << (32 - y));
  60   unsigned int g = f;
  61   asm volatile ("" : "+r" (f));
  62   vv++;         /* { dg-final { gdb-test 62 "g" "f" } } */
  63   return f;
  64 }
  65
  66 int
  67 main ()
  68 {
  69   f1 (0x123456789abcde0fUL);
  70   f2 (0x123456789abcde0fUL, 18);
  71   f3 (0x123456789abcde0fUL, 17);
  72   f4 (0x12345678);
  73   f5 (0x12345678, 18);
  74   f6 (0x12345678, 17);
  75   return 0;
  76 }