[Bug target/99781] [11 Regression] ICE in partial_subreg_p, at rtl.h:3144

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99781

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |rsandifo at gcc dot gnu.org,
                   |                            |vmakarov at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems in *.ira dump the v1 (33) register is only used in OImode, so
reg->biggest_mode being E_OImode makes sense.
But for some reason LRA has added
     (expr_list:REG_DEAD (reg:VNx8BF 33 v1)
and the code is unhappy to see partial_subreg_p called for unordered modes.