clang/test/Sema/builtins-x86.cpp

   1 // RUN: %clang_cc1 -triple=x86_64-apple-darwin -fsyntax-only -verify %s
   2 //
   3 // Ensure that when we use builtins in C++ code with templates that compute the
   4 // valid immediate, the dead code with the invalid immediate doesn't error.
   5 // expected-no-diagnostics
   6
   7 typedef short __v8hi __attribute__((__vector_size__(16)));
   8
   9 template <int Imm>
  10 __v8hi test(__v8hi a) {
  11     if (Imm < 4)
  12       return __builtin_ia32_pshuflw(a, 0x55 * Imm);
  13     else
  14       return __builtin_ia32_pshuflw(a, 0x55 * (Imm - 4));
  15 }
  16
  17 template __v8hi test<0>(__v8hi);
  18 template __v8hi test<1>(__v8hi);
  19 template __v8hi test<2>(__v8hi);
  20 template __v8hi test<3>(__v8hi);
  21 template __v8hi test<4>(__v8hi);
  22 template __v8hi test<5>(__v8hi);
  23 template __v8hi test<6>(__v8hi);
  24 template __v8hi test<7>(__v8hi);