[Bug target/78458] [7 Regression] LRA ICE building libgcc for powerpc-linux-gnuspe e500v2

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78458

--- Comment #5 from Peter Bergner <bergner at gcc dot gnu.org> ---
gdb show we don't like:

(gdb) frame 1
#1  0x0000000010a7d328 in lra_set_insn_recog_data (insn=0x3fffb5584340) at
/home/bergner/gcc/gcc-fsf-mainline-reg-move_costs-base/gcc/lra.c:963
963               gcc_assert (GET_CODE (PATTERN (insn)) == USE
(gdb) pr insn
(insn 281 280 129 9 (set (subreg:SI (reg/v:TF 173 [ p1 ]) 12)
        (subreg:SI (reg:IF 325) 12)) "pr78458.i":17 -1
     (nil))

Looking at the -mno-lra output, it's interesting that we don't have any use of
IFmode anywhere.