Replace CIR interpreter with LIR interpreter#9272

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lukewilliamboswell wants to merge 138 commits intomainfrom

lir-interpreter

Commits on Mar 22, 2026

Replace CIR interpreter with CIR → LIR interpreter pipeline

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Commits on Mar 23, 2026

Fix cell symbol identity mismatch for partial record spread in MIR→LIR

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Fix monomorphize panic on annotation-only local function calls

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Fix recursive tag union layout resolution in MIR monotype resolver

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Increase LIR interpreter max_call_depth to 1024 and re-enable recursive test

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remove old plan files that should never have been merged into main
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Fix str_from_utf8 layout mismatch in LIR interpreter

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Fix closure monomorphization and MIR Lower capture panics

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Add parallel eval test runner with job queue and crash protection

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Run all backends (interpreter, dev, wasm, llvm) in eval test runner and compare results

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Make `zig build test-eval` run the parallel runner instead of old eval tests

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Add eval test migration guide for porting tests to parallel runner

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Add --coverage flag to eval test runner, separate coverage-eval build step

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Skip performance summary in coverage mode

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Fix coverage-eval to run independently of parser coverage

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Add --help, backend skip support, and per-phase timing to eval test runner

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Fix UAF, signal handler, and code quality issues in eval test runner

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Fix realloc alignment, remove code duplication, and improve eval test runner

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Migrate 306 eval tests to parallel runner (524 test cases)

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Migrate closure_test.zig eval tests to parallel runner (53 tests)

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Migrate arithmetic_comprehensive_test.zig to parallel runner (226 tests)

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Migrate list_refcount_*.zig eval tests to parallel runner (105 tests)

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Add inspect_str support and migrate 57 more eval tests to parallel runner

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Add tag union support and migrate remaining eval tests to parallel runner

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Remove unused buildStructFromFields and buildStructNode functions

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Replace migration prompt with coverage-driven eval test prompt

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Delete eval_test.zig by moving remaining tests to proper homes

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Fix docs snapshot panics from non-func monotypes in Monomorphize

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WIP eval test coverage
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Merge origin/main into lir-interpreter

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Add eval coverage tests for shifts, float/int conversions, typed arithmetic, and strings

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Fix seamless slice segfault by replacing manual RocStr/RocList decoding with builtin helpers

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Add hang watchdog to parallel test runner and more eval tests

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Remove unused SKIP_INTERP constant

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Skip cross-def closure snapshots and document investigation findings

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remove intermediate files
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Fix watchdog for 32-bit targets and crash message free

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Skip U16 minus and rem_by tests that hang on x86_64-linux CI

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Skip all U8/U16 large-value arithmetic tests (hang on x86_64-linux)

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Skip U128 subtraction test that hangs on x86_64-linux CI

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Fix cross-def closure evaluation with batch lowering retry

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Fix MIR panics triggered by comptime evaluation of incomplete/errored code

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Remove roc_target parameter from interpreter pipeline and clean up evaluator

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Merge origin/main into lir-interpreter

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Harden MIR pipeline against type mismatches and fix crash message leak

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Handle degenerate monotypes in MirToLir instead of panicking

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Commits on Mar 24, 2026

Commits on Mar 25, 2026

Commits on Mar 26, 2026

Commits on Mar 27, 2026

Fix use-after-reallocation in monomorphize finalizeResolvedDirectCallProcInst

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Commits on Mar 28, 2026

Fix eval test runner to actually validate expected values

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