gcc/testsuite/gcc.dg/pr95853.c

   1 /* PR tree-optimization/95853 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-widening_mul" } */
   4
   5 #if __SIZEOF_INT128__
   6 typedef __uint128_t W;
   7 typedef unsigned long long T;
   8 #else
   9 typedef unsigned long long W;
  10 typedef unsigned int T;
  11 #endif
  12
  13 struct S { int p; T r; };
  14
  15 struct S
  16 foo (T x, T y)
  17 {
  18   W z = (W) x + y;
  19   return (struct S) { z > ~(T) 0, (T) z };
  20 }
  21
  22 struct S
  23 bar (T x)
  24 {
  25   W z = (W) x + 132;
  26   return (struct S) { z > ~(T) 0, (T) z };
  27 }
  28
  29 struct S
  30 baz (T x, unsigned short y)
  31 {
  32   W z = (W) x + y;
  33   return (struct S) { z > ~(T) 0, (T) z };
  34 }
  35
  36 struct S
  37 qux (unsigned short x, T y)
  38 {
  39   W z = (W) x + y;
  40   return (struct S) { z > ~(T) 0, (T) z };
  41 }
  42
  43 struct S
  44 corge (T x, T y)
  45 {
  46   T w = x + y;
  47   W z = (W) x + y;
  48   return (struct S) { z > ~(T) 0, w };
  49 }
  50
  51 struct S
  52 garple (T x, T y)
  53 {
  54   W z = (W) x + y;
  55   T w = x + y;
  56   return (struct S) { z > ~(T) 0, w };
  57 }
  58
  59 /* { dg-final { scan-tree-dump-times "ADD_OVERFLOW" 6 "widening_mul" { target { i?86-*-* x86_64-*-* } } } } */