[Bug target/106972] internal compiler error: in extract_insn, at recog.c:2770 on ARMeb when building gcc itself

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106972

--- Comment #6 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Nobody has proposed any patches yet, but I imagine we'd end up treating
-mcpu=iwmmxt[2] in the same way as -mcpu=xscale.  Similarly for
-march=iwmmxt[2].