LLVM backend: O(1) dispatcher lookup, register-allocator-sized chunks, IR-level PGO, and a ps1 correctness fix - #14

Merged

siahisaforker merged 15 commits into

ExpansionPak:mainfrom

dougchansan:llvm-dispatcher-pgo-upstream

Aug 10, 2026

Commits on Aug 9, 2026

Widen the LLVM object cache key, and show what the optimizer is doing
dougchansan
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91686d6
Keep the vectorizers, and say why in the pipeline itself
dougchansan
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ca4be35
Size LLVM chunks for the register allocator, not for the C backend
dougchansan
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4352249
Make the LLVM target CPU selectable, and keep the portable default
dougchansan
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c409f39
Preserve ps1 across scalar FP work in the DolIR builder
dougchansan
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57461c0
Make the generated dispatcher lookup O(1) behind DOLRECOMP_DISPATCH_LOOKUP
dougchansan
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2f00fd7
Attach IR-level instrumentation PGO to the LLVM backend
dougchansan
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6afada4
Gate a PGO build against a stale profile instead of degrading silently
dougchansan
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e07701f
Record the measured results and methodology for these four changes
dougchansan
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74b5127
Include <time.h> in pipeline.c for the LLVM chunk timing
dougchansan
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c8f1591
Update the results doc now that the branch is built and tested
dougchansan
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dfada74
Record the full test result: the suite passes 16/16 and 19/19
dougchansan
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4990274

Commits on Aug 10, 2026

Swap the results doc for before/after screenshots
dougchansan
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e2fac49
Fix LLVM 19 build
siahisaforker
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caea3f7
Fix LLVM 20 build
siahisaforker
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fa78f90