gcc/testsuite/gcc.dg/pr88784-12.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-dce3" } */
   3
   4 #include <limits.h>
   5
   6 _Bool or1(unsigned x, unsigned y)
   7 {
   8   /* x <= y || x == 0 --> x <= y */
   9   return x <= y || x == 0;
  10 }
  11
  12 _Bool or2(unsigned x, unsigned y)
  13 {
  14   /* x >= y || x == UINT_MAX --> x >= y */
  15   return x >= y || x == UINT_MAX;
  16 }
  17
  18 _Bool or3(signed x, signed y)
  19 {
  20   /* x <= y || x == INT_MIN --> x <= y */
  21   return x <= y || x == INT_MIN;
  22 }
  23
  24 _Bool or4(signed x, signed y)
  25 {
  26   /* x >= y || x == INT_MAX --> x >= y */
  27   return x >= y || x == INT_MAX;
  28 }
  29
  30 /* { dg-final { scan-tree-dump-not " == " "dce3" } } */