[Bug target/117946] ICE: maximum number of generated reload insns per insn achieved (90) with -O -favoid-store-forwarding -mavx10.1 -mprefer-avx128 --param=store-forwarding-max-distance=128

[liuhongt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117946

--- Comment #7 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
5024      Choosing alt 6 in insn 295:  (0) ?jc  (1) Yd {*movti_internal}
(sp_off=-128)                                                                   
5025      Change to class INDEX_GPR16 for r273                                  
5026      Creating newreg=274, assigning class ALL_SSE_REGS to r274             
5027  295: r273:TI=r274:TI                                                      
5028    Inserting insn reload before:                                           
5029  296: r274:TI=r208:SI#0                                                    

Why class is changed to INDEX_GPR16 for r273