05

tests/ir_parity.sh

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+#!/bin/bash
+# IR Parity Test — Compares output of the old pipeline vs the IR pipeline.
+#
+# For each example, this script:
+#   1. Compiles and runs with the old pipeline (sx run)
+#   2. Compiles and runs with the IR pipeline (sx ir-run, once wired)
+#   3. Compares stdout output
+#
+# For now (Step 3.9 initial), it tests that the IR pipeline can at least
+# produce LLVM IR without crashing (via sx ir-dump → lower → emit).
+#
+# Usage:
+#   bash tests/ir_parity.sh           # Test all examples
+#   bash tests/ir_parity.sh --ir-dump # Just test lowering (no codegen)
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+SX="$ROOT_DIR/zig-out/bin/sx"
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[0;33m'
+NC='\033[0m'
+
+passed=0
+failed=0
+skipped=0
+errors=""
+
+# Get all example files
+examples=$(ls "$ROOT_DIR"/examples/*.sx 2>/dev/null | sort)
+
+for example in $examples; do
+    name=$(basename "$example" .sx)
+
+    # Test: ir-dump should not crash
+    if output=$("$SX" ir-dump "$example" 2>&1); then
+        # Check that output is non-empty (lowering produced something)
+        if [ -n "$output" ]; then
+            printf "  %-30s ${GREEN}ok${NC}\n" "$name"
+            passed=$((passed + 1))
+        else
+            printf "  %-30s ${YELLOW}empty${NC}\n" "$name"
+            skipped=$((skipped + 1))
+        fi
+    else
+        printf "  %-30s ${RED}FAIL${NC}\n" "$name"
+        failed=$((failed + 1))
+        errors="$errors\n  $name: ir-dump crashed"
+    fi
+done
+
+echo ""
+echo "$passed passed, $failed failed, $skipped empty"
+
+if [ -n "$errors" ]; then
+    echo -e "\nErrors:$errors"
+fi
+
+exit $failed