clang/test/CodeGenCXX/p2085.cpp

   1 // RUN: %clang_cc1 --std=c++20 %s -emit-llvm -o - -triple x86_64-linux | FileCheck %s
   2
   3 namespace std {
   4 struct strong_ordering {
   5   int n;
   6   constexpr operator int() const { return n; }
   7   static const strong_ordering equal, greater, less;
   8 };
   9 constexpr inline strong_ordering strong_ordering::equal = {0};
  10 constexpr inline strong_ordering strong_ordering::greater = {1};
  11 constexpr inline strong_ordering strong_ordering::less = {-1};
  12 } // namespace std
  13
  14 struct Space {
  15   int i, j;
  16
  17   std::strong_ordering operator<=>(Space const &other) const;
  18   bool operator==(Space const &other) const;
  19 };
  20
  21 // Make sure these cause emission
  22 std::strong_ordering Space::operator<=>(Space const &other) const = default;
  23 // CHECK-LABEL: define{{.*}} @_ZNK5SpacessERKS_
  24 bool Space::operator==(Space const &) const = default;
  25 // CHECK-LABEL: define{{.*}} @_ZNK5SpaceeqERKS_
  26
  27 struct Water {
  28   int i, j;
  29
  30   std::strong_ordering operator<=>(Water const &other) const;
  31   bool operator==(Water const &other) const;
  32 };
  33
  34 // Make sure these do not cause emission
  35 inline std::strong_ordering Water::operator<=>(Water const &other) const = default;
  36 // CHECK-NOT: define{{.*}} @_ZNK5WaterssERKS_
  37 inline bool Water::operator==(Water const &) const = default;
  38 // CHECK-NOT: define{{.*}} @_ZNK5WatereqERKS_