[Bug tree-optimization/115544] ICE: in lower_complexexpr_stmt, at gimple-lower-bitint.cc:4719 with -O -fno-tree-fre -fno-tree-ccp -fno-tree-forwprop and _BitInt() __builtin_mul_overflow()

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115544

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> I am not sure if complex lowering should do some simple DCE or if it matters
> if it does not do it.

Note complex lowering now does the simple DCE after r15-3128-gde1923f9f4d534 :
Removing dead stmt:_6 = COMPLEX_EXPR <a.0_1, 0>;

And the unused statement is removed.