[Bug rtl-optimization/61522] [4.10 regression] ICE while building libgcc in LRA

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61522

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
              if (lra_reg_info[regno].restore_regno < 0
                  || ! bitmap_bit_p (&lra_inheritance_pseudos, regno)
                  || (spill_class
                      = ((enum reg_class)
                         targetm.spill_class
                         ((reg_class_t) rclass,
                          PSEUDO_REGNO_MODE (regno)))) == NO_REGS)


doesn't check if targetm.spill_class is non-NULL