Memory usage reduction

[jjcnn]

Description

#6044 increased the memory usage of the compiler by an estimated 400%. This PR alleviates some of that increased footprint.

is_external in the Module struct needs to be updated to allow for compilation of dependencies (a module is not external while it is being compiled, but is external when one of its dependents is being compiled). #6044 introduced an extra level of cloning, which in this PR is changed by making Module mutable and destructively updating is_external.

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
  • If my change requires substantial documentation changes, I have requested support from the DevRel team
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
• I have requested a review from the relevant team or maintainers.

[github-actions]

Benchmark for f124653

Click to view benchmark

Test	Base	PR	%
code_action	5.2±0.09ms	5.2±0.08ms	0.00%
code_lens	287.8±13.22ns	284.4±8.65ns	-1.18%
compile	2.7±0.02s	2.6±0.04s	-3.70%
completion	4.7±0.16ms	4.7±0.11ms	0.00%
did_change_with_caching	2.5±0.02s	2.6±0.03s	+4.00%
document_symbol	878.0±25.47µs	862.7±32.21µs	-1.74%
format	71.6±0.97ms	72.0±1.76ms	+0.56%
goto_definition	344.3±8.81µs	342.4±9.84µs	-0.55%
highlight	8.8±0.20ms	9.0±0.06ms	+2.27%
hover	501.3±6.94µs	497.3±13.86µs	-0.80%
idents_at_position	118.7±0.44µs	119.2±0.77µs	+0.42%
inlay_hints	631.3±33.49µs	642.5±21.34µs	+1.77%
on_enter	471.9±14.41ns	446.1±15.88ns	-5.47%
parent_decl_at_position	3.6±0.03ms	3.7±0.03ms	+2.78%
prepare_rename	342.3±7.29µs	342.1±5.64µs	-0.06%
rename	9.2±0.18ms	9.4±0.08ms	+2.17%
semantic_tokens	1231.7±11.59µs	1263.2±19.11µs	+2.56%
token_at_position	335.8±2.01µs	335.6±2.52µs	-0.06%
tokens_at_position	3.5±0.06ms	3.7±0.02ms	+5.71%
tokens_for_file	395.7±1.82µs	400.2±5.68µs	+1.14%
traverse	38.0±1.08ms	37.8±0.96ms	-0.53%

[github-actions]

Benchmark for 7c3dac0

Click to view benchmark

Test	Base	PR	%
code_action	5.0±0.08ms	5.2±0.07ms	+4.00%
code_lens	287.8±10.08ns	289.1±8.13ns	+0.45%
compile	2.7±0.04s	2.7±0.04s	0.00%
completion	4.5±0.01ms	4.7±0.07ms	+4.44%
did_change_with_caching	2.6±0.03s	2.5±0.04s	-3.85%
document_symbol	887.8±14.05µs	889.0±53.50µs	+0.14%
format	72.6±2.50ms	71.9±2.75ms	-0.96%
goto_definition	346.8±7.88µs	343.6±8.55µs	-0.92%
highlight	8.7±0.12ms	9.0±0.05ms	+3.45%
hover	503.1±6.24µs	493.8±6.51µs	-1.85%
idents_at_position	117.5±1.82µs	118.0±1.17µs	+0.43%
inlay_hints	630.3±27.36µs	643.3±18.32µs	+2.06%
on_enter	476.2±27.51ns	442.1±14.11ns	-7.16%
parent_decl_at_position	3.5±0.04ms	3.7±0.04ms	+5.71%
prepare_rename	342.2±7.55µs	338.6±6.31µs	-1.05%
rename	9.0±0.13ms	9.3±0.11ms	+3.33%
semantic_tokens	1219.5±16.08µs	1255.3±15.59µs	+2.94%
token_at_position	334.5±2.57µs	336.0±2.12µs	+0.45%
tokens_at_position	3.5±0.03ms	3.7±0.05ms	+5.71%
tokens_for_file	405.4±16.07µs	401.4±3.01µs	-0.99%
traverse	38.5±0.53ms	37.8±0.98ms	-1.82%

[kayagokalp]

tooling changes ✅

[kayagokalp]

This brought #6219 mem usage to ~1.7gb from ~20gb