Representation-aware type lowering + native-ABI material evidence gate

.github/workflows/test.yml

@@ -517,6 +517,9 @@ jobs:
       - name: Run harness unit tests
         run: python3 -m unittest tests.test_compiler_output_regression
 
+      - name: Run native ABI evidence report unit tests
+        run: python3 -m unittest tests.test_native_abi_evidence_report
+
       - name: Gate native-region proof compiler output
         run: |
           python3 scripts/compiler_output_regression.py suite \
@@ -525,8 +528,25 @@ jobs:
             --benchmark-mode smoke \
             --runs 1 \
             --perf-counters off \
+            --gate \
             --print-summary
 
+      - name: Gate native-ABI proof compiler output
+        run: |
+          python3 scripts/compiler_output_regression.py suite \
+            --suite native-abi-proof \
+            --perry target/debug/perry \
+            --benchmark-mode smoke \
+            --runs 1 \
+            --perf-counters off \
+            --gate \
+            --print-summary
+
+      - name: Gate typed feedback runtime evidence
+        env:
+          PERRY_BIN: ${{ github.workspace }}/target/debug/perry
+        run: python3 -m unittest tests.test_typed_feedback_runtime_evidence
+
       - name: Gate positive vectorization compiler output
         run: |
           python3 scripts/compiler_output_regression.py capture \
@@ -582,6 +602,70 @@ jobs:
           name: compiler-output-regression
           path: target/compiler-output-regression/
 
+  # ---------------------------------------------------------------------------
+  # Native ABI evidence packet
+  #
+  # Full material-performance packet for the type-lowering gate. This is heavier
+  # than the per-PR compiler-output smoke because it runs the native-ABI proof
+  # packet with timing-quality samples, runtime checks, and release/LTO symbol
+  # freshness. Gate tag pushes and opt-in PR/manual runs; ordinary PRs rely on
+  # the lighter report/unit and compiler-output structural gates above.
+  # ---------------------------------------------------------------------------
+  native-abi-evidence-packet:
+    if: >-
+      github.event_name == 'push' ||
+      (github.event_name == 'workflow_dispatch' && inputs.run_extended_tests) ||
+      (github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'run-extended-tests'))
+    runs-on: ubuntu-latest
+    timeout-minutes: 90
+    env:
+      RUSTC_WRAPPER: sccache
+      SCCACHE_GHA_ENABLED: "false"
+      SCCACHE_DIR: ${{ github.workspace }}/.sccache
+      SCCACHE_CACHE_SIZE: "12G"
+      CARGO_INCREMENTAL: "0"
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install sccache
+        uses: mozilla-actions/sccache-action@v0.0.10
+
+      - name: Cache sccache objects
+        uses: actions/cache@v4
+        with:
+          path: ${{ github.workspace }}/.sccache
+          key: sccache-${{ runner.os }}-perry-native-abi-evidence-${{ github.run_id }}
+          restore-keys: |
+            sccache-${{ runner.os }}-perry-
+
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: "${{ runner.os }}-perry"
+          save-if: ${{ github.ref == 'refs/heads/main' }}
+
+      - name: Install clang
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y clang
+
+      - name: Gate native ABI evidence packet
+        env:
+          RUSTC_WRAPPER: ""
+          RUSTFLAGS: -Awarnings
+        run: |
+          PYTHON=python3 bash tests/test_native_abi_evidence_packet_smoke.sh \
+            target/native-abi-evidence-packet
+
+      - name: Upload native ABI evidence packet
+        if: always()
+        uses: actions/upload-artifact@v7
+        with:
+          name: native-abi-evidence-packet
+          path: target/native-abi-evidence-packet/
+
   # ---------------------------------------------------------------------------
   # Parity tests (Perry output vs Node.js)
   # ---------------------------------------------------------------------------

CHANGELOG.md

@@ -1,3 +1,32 @@
+## v0.5.1198 — feat(codegen): representation-aware type lowering + native-ABI material evidence gate
+
+Merges the representation-aware type-lowering track (`codex/type-lowering-runtime-20260616`)
+into `main`. Builds on the earlier #5291 landing; the most recent integration was #5462 (the
+material evidence gate). Merged via PR #5466.
+
+**Type lowering.** Native representations (i32 / u32 / f64 / i128-BigInt / StringRef) with
+runtime-guarded fast/fallback splits for scalar params, number-keyed `Map`/`Set`, typed string
+and i32 methods, and packed numeric array loops (f64 + i32 loop versioning). The fast i32/u32
+array paths are gated on the declared element type (`Int32[]` / `PerryU32`), so plain `number[]`
+arrays always take the f64 path. Small-BigInt literals lower to native i128.
+
+**Material evidence gate.** A differential A/B CI gate (typed vs `any`-typed control fixtures)
+that recomputes speedups and instruction-counter reductions from real `-O3` IR plus GC-trace
+counts, with anti-gaming guards (positive-control-baseline requirement, manifest-identity check,
+trace-enabled requirement). Backed by 185 codegen regression tests, negative/invalidation tests,
+and a 101-symbol release-sentinel `nm` check. Heavy packet runs on tag pushes / opt-in PR labels;
+ordinary PRs run the lighter structural + unit gates.
+
+**Merge notes.** `main` had carried an earlier version of this code (#5291) and evolved it
+further, so this was a semantic merge across the shared codegen/runtime surface. Resolutions
+preferred the feature branch where it strictly superseded, and folded in main-only changes
+including the `Set.add` write-back SIGSEGV bugfix (Next.js turbopack `loadedChunks.add`), the
+#5334 class-field-set barrier-elision / fallback-outlining, and the size-optimize feature gating.
+One HEAD-only IR-shape regression test (`boxed_local_slot_uses_i64_js_value_bits_until_helper_edges`)
+was updated to assert the box-bits ABI invariant (no raw `double` operand reaches a bits helper)
+rather than one exact instruction sequence, since main's constant lowering now folds the
+`undefined` slot default straight to i64 bits. Follow-ups tracked in #5464.
+
 ## v0.5.1197 — feat(runtime): #2656 — make WeakMap/WeakSet actually weak
 
 WeakMap/WeakSet previously stored entries as plain `[key, value]` pair arrays that the

CLAUDE.md

@@ -8,7 +8,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 Perry is a native TypeScript compiler written in Rust that compiles TypeScript source code directly to native executables. It uses SWC for TypeScript parsing and LLVM for code generation.
 
-**Current Version:** 0.5.1197
+**Current Version:** 0.5.1198
 
 
 ## TypeScript Parity Status