standalone: Add execution of test cases via lli

nac3standalone/demo/check_demo.sh

@@ -13,5 +13,7 @@ set -- "${@:1:$(($# - 1))}"
 echo -n "Checking $demo... "
 ./interpret_demo.py "$demo" > interpreted.log
 ./run_demo.sh "$@" "$demo" > run.log
+./run_demo_lli.sh "$@" "$demo" > run_lli.log
 diff -Nau interpreted.log run.log
+diff -Nau interpreted.log run_lli.log
 echo "ok"

nac3standalone/demo/run_demo_lli.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -e
+
+if [ -z "$1" ]; then
+    echo "No argument supplied"
+    exit 1
+fi
+
+if [ -e ../../target/release/nac3standalone ]; then
+    nac3standalone=../../target/release/nac3standalone
+else
+    # used by Nix builds
+    nac3standalone=../../target/x86_64-unknown-linux-gnu/release/nac3standalone
+fi
+
+rm -f "*.o" "*.bc" demo
+
+$nac3standalone --emit-llvm "$@"
+clang -c -std=gnu11 -Wall -Wextra -O3 -emit-llvm -o demo.bc demo.c
+lli --extra-module demo.bc --extra-module irrt.bc main.bc