[Bug inline-asm/64951] g++ generates incorrect code when using a register variable within a template function

[gdelu...@security-labs.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64951

Guillaume Delugré <gdelu...@security-labs.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|4.9.2                       |5.2.0

--- Comment #1 from Guillaume Delugré <gdelu...@security-labs.org> ---
The same problem is present when using C++14 auto arguments instead of
templates:

  inline void SetRdx(auto value)
  {
      register auto __foo asm ("rdx") = value;
      asm volatile ( "" :: "r" (__foo) );
  }

This code will also store the value parameter inside register rax instead of
rdx on GCC 5.2.0.