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Add golden budget tests for unsafeFromBuiltinData compilation in both SumsOfProducts and BuiltinCasing modes. Covers single-constructor, pair, mixed-arity, and three-constructor types with PIR, UPLC, and evaluation golden files for GHC 9.6 and 9.12.
Replace runtime list-indexing via PlutusTx.List.!! with a compile-time equalsInteger/ifThenElse chain for the SumsOfProducts caseInteger fallback. This fixes a 3-5x cost regression in unsafeFromBuiltinData for multi-constructor types (reported by Hydra team). Also fixes a latent bug in compileHaskellList that silently dropped list elements when GHC used (:)-chain representation instead of build/foldr form.
Updated Marlowe golden TSV files to reflect improved budgets from the caseInteger SoP fix. CPU: -9..12%, Memory: -16..20%.
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zliu41
approved these changes
Apr 7, 2026
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Summary
Patch release 1.56.0.1 — backports the caseInteger SoP fallback fix from #7693.
PlutusTx.List.!!with a compile-timeequalsInteger/ifThenElsechain for the SumsOfProductscaseIntegerfallback, fixing a 3-5x cost regression inunsafeFromBuiltinDatafor multi-constructor types.compileHaskellListthat silently dropped list elements when GHC used(:)-chain representation.Budget improvements (Marlowe validators)
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