gcc/testsuite/gcc.dg/tree-ssa/negneg-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -frounding-math -fdump-tree-optimized-raw" } */
   3
   4 // This assumes that long long is strictly larger than int
   5
   6 #define DEF(num, T1, T2) T2 f##num(T1 x) { \
   7     T1 y = -x; \
   8     T2 z = (T2)y; \
   9     return -z; \
  10 }
  11 DEF(0, unsigned, long long)
  12 DEF(1, unsigned, unsigned long long)
  13 DEF(2, double, float)
  14
  15 /* { dg-final { scan-tree-dump-times "negate_expr" 6 "optimized"} } */