Drop prefix from explicitly set entrypoint

[Seelengrab]

This depends on #422 due to changing the same line in irgen.jl.

Opening as a draft until #422 is closed.

[maleadt]

I was actually considering dropping the prefix altogether. If you choose a custom name for the entrypoint, it shouldn't be prefixed by anything, no?

[Seelengrab]

Yeah, that makes sense too - I'll change it to drop the prefix entirely if entry_name is set (if that is still what you want to call it due to #422). I originally thought the prefix could be used for every function, not just the entry point.

[Seelengrab]

Right, this is now disentangled from #422, so if tests run through this should be mergeable.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -6.68 ⚠️

Comparison is base (f793923) 86.92% compared to head (64121d7) 80.24%.

❗ Current head 64121d7 differs from pull request most recent head 94e179b. Consider uploading reports for the commit 94e179b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #423      +/-   ##
==========================================
- Coverage   86.92%   80.24%   -6.68%     
==========================================
  Files          24       24              
  Lines        2922     2896      -26     
==========================================
- Hits         2540     2324     -216     
- Misses        382      572     +190     

Impacted Files	Coverage Δ
src/irgen.jl	85.28% <0.00%> (-9.17%)	⬇️

... and 10 files with indirect coverage changes

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[Seelengrab]

And backports failed again, for the same reason as before..

Checking this PR locally, seems like naming the function main or start is not enough to have it emitted as the first function at address 0x0 :/ Still a good change I think, but doesn't fix the issue I was experiencing..