[Bug target/127718] arc: 'm' constraint (in inline asm) is too lax for store instruction destination

[michiel at derhaeg dot be via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127718

--- Comment #2 from Michiel Derhaeg <michiel at derhaeg dot be> ---
Proposed fix downstream:
https://github.com/foss-for-mips-arc-processors/gcc/pull/359