https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94474
--- Comment #13 from Bernd Edlinger <bernd.edlinger at hotmail dot de> --- Hi Andrew, You are right about the instruction re-ordering, that is done in a compiler pass, which simply re-orders RTL instruction lists. But I think when the code motion happens, we just have no easy access to the range markers. And it may be the case that this is-stmt location mentions a register value that is indeed the parameter of the inline function, so it may be no instruction but only a side note, to the debugger, that a certain value would be already here available in a certain register. Also that is only a vague guess, since although I did already a number of gcc patches, I learn new things each time :-) Bernd.
