gcc/testsuite/gcc.dg/pr88784-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-ifcombine" } */
   3
   4 #include <limits.h>
   5
   6 _Bool and1(unsigned x, unsigned y)
   7 {
   8   /* x > y && x != 0 --> x > y */
   9   return x > y && x != 0;
  10 }
  11
  12 _Bool and2(unsigned x, unsigned y)
  13 {
  14   /* x < y && x != UINT_MAX --> x < y */
  15   return x < y && x != UINT_MAX;
  16 }
  17
  18 _Bool and3(signed x, signed y)
  19 {
  20   /* x > y && x != INT_MIN --> x > y */
  21   return x > y && x != INT_MIN;
  22 }
  23
  24 _Bool and4(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 " != " "ifcombine" } } */