[Bug target/113980] risc-v: unnecessary sign-extend after lw with volatile, and more

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113980

Jeffrey A. Law <law at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Jeffrey A. Law <law at gcc dot gnu.org> ---
volatile inhibits all kinds of optimizations, in this case it inhibits our
ability to combine instructions and eliminate the extension.  It's unfortunate,
but everything is behaving per design.