[Bug c/63645] Incorrect code generation

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63645

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This:
expr->oper == GNM_EXPR_OP_FUNCALL &&
      expr->func.argc == 1 

is being combined into:
  D.2319_2 = BIT_FIELD_REF <*expr_1, 64, 0>;
  D.2320_3 = D.2319_2 & 18446744069414584575;
  D.2320_3 == 4294967297

Which is correct and I think is valid.

Valgrind does not realize the part of expr will not match part of the
and/equals so it complains.  Basically a bug in valgrind for not tracking
uninitialized bits correctly.

The solution to asan message was provided in comment #4.