[Bug target/67439] [4.9/5/6 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67439
--- Comment #5 from ktkachov at gcc dot gnu.org ---
-mrestrict-it was introduced in 4.9 but it's enabled by default for
-march=armv8-a -mthumb. So, while -mrestrict-it did not exist for 4.8, this is
a regression from 4.8 as far as compiling with -march=armv8-a -mthumb is
concerned