[Bug target/64554] _mm_clmulepi64_si128 doesn't compile with -O2

[charles at kde dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64554

--- Comment #5 from charles at kde dot org ---
No you're right.

I could add, though, that the compiler should have said something.

Also, why did it compile just fine with -O0?