gcc/testsuite/gcc.dg/pr67089-6.c

   1 /* PR target/67089 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -ftree-loop-if-convert -fdump-tree-widening_mul" } */
   4
   5 extern void abort (void);
   6
   7 int cnt;
   8 unsigned int a[16], b[16], c[16], d;
   9 void foo (int x);
  10
  11 __attribute__((noinline, noclone)) void
  12 f0 (unsigned int x)
  13 {
  14   for (int i = 0; i < 16; i++)
  15     {
  16       unsigned int r = x - a[i];
  17       b[i] = r;
  18       c[i] = r > x ? 7 : x;
  19     }
  20 }
  21
  22 #define T(n, type, op, cond) \
  23 __attribute__((noinline, noclone))      \
  24 type                                    \
  25 f##n (type x, type y)                   \
  26 {                                       \
  27   type r = op;                          \
  28   cond;                                 \
  29   return r;                             \
  30 }
  31
  32 T (1, unsigned int, x - y, if (r > x) foo (0))
  33 T (2, unsigned long, x - y, if (r <= x) foo (0))
  34 T (3, unsigned short, x - y, if (x < r) foo (r))
  35 T (4, unsigned long long, x - y, if (x >= r) foo (0))
  36 T (5, unsigned int, x - y, if (d || r > x) foo (0))
  37 T (6, unsigned long, x - y, if (d || r <= x) foo (0))
  38 T (7, unsigned char, x - y, if (d || x < r) foo (0))
  39 T (8, unsigned long long, x - y, if (d || x >= r) foo (0))
  40 T (9, unsigned int, x + y, if (r >= x) foo (0))
  41 T (10, unsigned long, x + y, if (r < x) foo (0))
  42 T (11, unsigned short, x + y, if (x <= r) foo (r))
  43 T (12, unsigned long long, x + y, if (d || x > r) foo (0))
  44 T (13, unsigned int, x + y, if (d || r >= x) foo (0))
  45 T (14, unsigned long, x + y, if (d || r < x) foo (0))
  46 T (15, unsigned short, x + y, if (d || x <= r) foo (0))
  47 T (16, unsigned long long, x + y, if (d || x > r) foo (0))
  48 T (17, unsigned int, x + y, if (r >= y) foo (0))
  49 T (18, unsigned long, x + y, if (r < y) foo (0))
  50 T (19, unsigned short, x + y, if (y <= r) foo (r))
  51 T (20, unsigned long long, x + y, if (d || y > r) foo (0))
  52 T (21, unsigned int, x + y, if (d || r >= y) foo (0))
  53 T (22, unsigned long, x + y, if (d || r < y) foo (0))
  54 T (23, unsigned short, x + y, if (d || y <= r) foo (0))
  55 T (24, unsigned long long, x + y, if (d || y > r) foo (0))
  56 T (25, unsigned short, 2U - x, if (r > 2U) foo (0))
  57 T (26, unsigned char, 2U - x, if (r <= 2U) foo (0))
  58
  59 /* { dg-final { scan-tree-dump-times "ADD_OVERFLOW" 16 "widening_mul" { target { { i?86-*-* x86_64-*-* } && { ! ia32 } } } } } */
  60 /* { dg-final { scan-tree-dump-times "SUB_OVERFLOW" 11 "widening_mul" { target { { i?86-*-* x86_64-*-* } && { ! ia32 } } } } } */
  61 /* { dg-final { scan-tree-dump-times "ADD_OVERFLOW" 12 "widening_mul" { target { { i?86-*-* x86_64-*-* } && ia32 } } } } */
  62 /* { dg-final { scan-tree-dump-times "SUB_OVERFLOW" 9 "widening_mul" { target { { i?86-*-* x86_64-*-* } && ia32 } } } } */