[Bug target/106743] Illegal assembly code with -march=skylake

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106743

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |marxin at gcc dot gnu.org

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Reduced test-case: 

cat pr106743.ii
struct basic_ostream {};
template <typename _Traits> void operator<<(_Traits, char);
basic_ostream cout;
int main___tmp;

int main() {
  int a = ({
    __asm__("xchgb %b0, %h0" : "=q"(main___tmp));
    main___tmp;
  });
  cout << a;
}