5 Jul
2025
5 Jul
'25
1:44 a.m.
On Sat Jul 5 01:39:17 2025 +0000, Paul Gofman wrote:
but what is going to prevent compiler from using those immdeiately after you modified them? The only way to interpret such test is to compile, run, and carefully study its disassembly.
And breakage on function exit clearly indicates problems around that (while maybe exactly that part can be fixed by properly indicating registers as output). Also, even for temporary ad-hoc testing, why not use explicit register names as in %r12 and mark those in output as clobbered also by name? I don't know if maybe everyone knows what are those 'j', 'k' correspond at once, but I find it difficult to even find anywhere what those are :)