[Bug inline-asm/43998] inline assembler: can't set clobbering for input register

[stsp at users dot sourceforge.net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43998

--- Comment #15 from Stas Sergeev <stsp at users dot sourceforge.net> ---
Btw, clang seems to allow same regs in input and clobber list.