[Bug target/106602] riscv: suboptimal codegen for zero_extendsidi2_shifted w/o bitmanip

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106602

--- Comment #24 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Just a note.  Raphael and I are going to poke at this from a different
direction.