standalone: Add flags to control demo output options

Fixes `undefined reference to 'pow'` for pow.py using -O0.

nac3standalone/demo/check_demo.sh

@@ -7,15 +7,19 @@ if [ -z "$1" ]; then
   exit 1
 fi
 
-demo="${@:-1}"
-set -- "${@:1:$(($# - 1))}"
+declare -a nac3args
+while [ $# -gt 1 ]; do
+  nac3args+=("$1")
+  shift
+done
+demo="$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
+./run_demo.sh --redirect-exe-stdout "${nac3args[@]}" "$demo"
+./run_demo_lli.sh --redirect-exe-stdout "${nac3args[@]}" "$demo"
 diff -Nau interpreted.log run.log
 diff -Nau interpreted.log run_lli.log
 echo "ok"
 
-rm -f interpreted.log run.log run_lli.log
+rm -f interpreted.log run.log run_lli.log

nac3standalone/demo/run_demo.sh

@@ -7,6 +7,19 @@ if [ -z "$1" ]; then
     exit 1
 fi
 
+declare -a nac3args
+while [ $# -ge 1 ]; do
+  case "$1" in
+    --redirect-exe-stdout)
+      redirect_exe_stdout=1
+      ;;
+    *)
+      nac3args+=("$1")
+      ;;
+  esac
+  shift
+done
+
 if [ -e ../../target/release/nac3standalone ]; then
     nac3standalone=../../target/release/nac3standalone
 else
@@ -16,7 +29,13 @@ fi
 
 rm -f "*.o" demo
 
-$nac3standalone "$@"
+$nac3standalone "${nac3args[@]}"
+
 clang -c -std=gnu11 -Wall -Wextra -O3 -o demo.o demo.c
-clang -o demo module.o demo.o
-./demo
+clang -lm -o demo module.o demo.o
+
+if [ -z "$redirect_exe_stdout" ]; then
+  ./demo
+else
+  ./demo > run.log
+fi

nac3standalone/demo/run_demo_lli.sh

@@ -7,6 +7,19 @@ if [ -z "$1" ]; then
     exit 1
 fi
 
+declare -a nac3args
+while [ $# -ge 1 ]; do
+  case "$1" in
+    --redirect-exe-stdout)
+      redirect_exe_stdout=1
+      ;;
+    *)
+      nac3args+=("$1")
+      ;;
+  esac
+  shift
+done
+
 if [ -e ../../target/release/nac3standalone ]; then
     nac3standalone=../../target/release/nac3standalone
 else
@@ -16,6 +29,12 @@ fi
 
 rm -f "*.o" "*.bc" demo
 
-$nac3standalone --emit-llvm "$@"
+$nac3standalone --emit-llvm "${nac3args[@]}"
+
 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
+
+if [ -z "$redirect_exe_stdout" ]; then
+  lli --extra-module demo.bc --extra-module irrt.bc main.bc
+else
+  lli --extra-module demo.bc --extra-module irrt.bc main.bc > run_lli.log
+fi