clang/test/Sema/constant-builtins-all-args-evaluated.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 // expected-no-diagnostics
   3
   4 constexpr int test_clzg_0() {
   5   int x = 0;
   6   (void)__builtin_clzg(0U, ++x);
   7   return x;
   8 }
   9
  10 static_assert(test_clzg_0() == 1);
  11
  12 constexpr int test_clzg_1() {
  13   int x = 0;
  14   (void)__builtin_clzg(1U, ++x);
  15   return x;
  16 }
  17
  18 static_assert(test_clzg_1() == 1);
  19
  20 constexpr int test_ctzg_0() {
  21   int x = 0;
  22   (void)__builtin_ctzg(0U, ++x);
  23   return x;
  24 }
  25
  26 static_assert(test_ctzg_0() == 1);
  27
  28 constexpr int test_ctzg_1() {
  29   int x = 0;
  30   (void)__builtin_ctzg(1U, ++x);
  31   return x;
  32 }
  33
  34 static_assert(test_ctzg_1() == 1);