clang/test/Sema/arithmetic-fence-builtin.c

   1 // RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -o - -verify -x c++ %s
   2 // RUN: %clang_cc1 -triple ppc64le -DPPC     -emit-llvm -o - -verify -x c++ %s
   3 // RUN: not %clang_cc1 -triple ppc64le -DPPC     -emit-llvm -o - -x c++ %s \
   4 // RUN:            -fprotect-parens 2>&1 | FileCheck -check-prefix=PPC %s
   5 #ifndef PPC
   6 int v;
   7 template <typename T> T addT(T a, T b) {
   8   T *q = __arithmetic_fence(&a);
   9   // expected-error@-1 {{invalid operand of type 'float *' where floating, complex or a vector of such types is required}}
  10   // expected-error@-2 {{invalid operand of type 'int *' where floating, complex or a vector of such types is required}}
  11   return __arithmetic_fence(a + b);
  12   // expected-error@-1 {{invalid operand of type 'int' where floating, complex or a vector of such types is required}}
  13 }
  14 int addit(int a, int b) {
  15   float x, y;
  16   typedef struct {
  17     int a, b;
  18   } stype;
  19   stype s;
  20   s = __arithmetic_fence(s);    // expected-error {{invalid operand of type 'stype' where floating, complex or a vector of such types is required}}
  21   x = __arithmetic_fence();     // expected-error {{too few arguments to function call, expected 1, have 0}}
  22   x = __arithmetic_fence(x, y); // expected-error {{too many arguments to function call, expected 1, have 2}}
  23   // Complex is supported.
  24   _Complex double cd, cd1;
  25   cd = __arithmetic_fence(cd1);
  26   // Vector is supported.
  27   typedef float __v4hi __attribute__((__vector_size__(8)));
  28   __v4hi vec1, vec2;
  29   vec1 = __arithmetic_fence(vec2);
  30
  31   v = __arithmetic_fence(a + b); // expected-error {{invalid operand of type 'int' where floating, complex or a vector of such types is required}}
  32   float f = addT<float>(a, b);   // expected-note {{in instantiation of function template specialization 'addT<float>' requested here}}
  33   int i = addT<int>(1, 2);       // expected-note {{in instantiation of function template specialization 'addT<int>' requested here}}
  34   constexpr float d = 1.0 + 2.0;
  35   constexpr float c = __arithmetic_fence(1.0 + 2.0);
  36   constexpr float e = __arithmetic_fence(d);
  37   return 0;
  38 }
  39 bool func(float f1, float f2, float f3) {
  40   return (f1 == f2 && f1 == f3) || f2 == f3; // Should not warn here
  41 }
  42 static_assert( __arithmetic_fence(1.0 + 2.0), "message" );
  43 #else
  44 float addit(float a, float b) {
  45   return __arithmetic_fence(a+b); // expected-error {{builtin is not supported on this target}}
  46 }
  47 #endif
  48 //PPC: error: option '-fprotect-parens' cannot be specified on this target