Optimizing 0-displacement jumps on i386

[Simon Richter]

Hi,

On 8/12/25 03:19, H. Peter Anvin wrote:

> Arguably this should be merged with subsequent alignment padding if it
> fits within one instruction.  However, in order to actually be effective
> in any meaningful way, this version of the optimization probably needs
> to be performed in the linker, or it will simply never happen if the
> code is compiled with linker garbage collection, which is pretty common
> these days.

x86 also doesn't use linker relaxations as much as other platforms -- 
besides historical reasons, I'm also not entirely sure if the data 
format to describe relaxations is expressive enough for the long list of 
alternative representations.

    Simon