gcc/testsuite/g++.dg/torture/pr36445.C

   1 /* { dg-do compile } */
   2 /* { dg-options "-msse" { target { i?86-*-* x86_64-*-* } } } */
   3 // This used to fail as we would try to expand a VCE where one side had
   4 // a mode of BLKmode and the other side was a vector mode.
   5 #define vector __attribute__((vector_size(16) ))
   6 struct struct1  {
   7   union { float a[3]; }    vmx;
   8   struct struct2   {
   9     struct2(const struct2& r) {}
  10   } w;
  11 } __attribute__((aligned(16)));
  12 struct struct3  {
  13   vector float vmx;
  14   operator const struct1& () const{
  15     return *reinterpret_cast<const struct1*>(this);
  16   }
  17 };
  18 struct3 func3( struct3 V1);
  19 struct3 func2( void );
  20 void func1( )  {
  21   struct1 vVec = func2() ;
  22   func3 ( (struct3&)vVec );
  23 }