x86_64: some operations are not implemented

[RetroDev256]

Zig Version

0.15.0-dev.56+d0911786c

Steps to Reproduce and Observed Behavior

1. Place this into a file named airSubSat.zig:

pub export fn _start() void {
    var int: u113 = 0;
    int -|= 1;
}

2. Run zig build-exe -fno-llvm airSubSat.zig
3. Observe the output:
   

Expected Behavior

I expect Zig to successfully compile the file.

[jacobly0]

I don't want one issue open for every TODO implement, so any future ones will be closed as duplicates of this tracking issue.