[Bug rtl-optimization/115013] [15 Regression] LRA: PR114810 fix result in ICE in the RISC-V Vector

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115013

--- Comment #6 from Dimitar Dimitrov <dimitar at gcc dot gnu.org> ---
Created attachment 58194
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58194&action=edit
tentative fix for PRU

The PRU requires a further target adjustment to fix SMALL_REGISTER_CLASS_P. The
attached patch fixes the dg.exp=pr71478.c regression.

I'm doing full regression tests now, and will commit if there are no
objections.