Add test on code generation for multiple declarations

test/codegen/array.c

@@ -11,9 +11,7 @@ int main() {
   a[3] = 2 + a[2];
   __builtin_print(a[3]);
 
-  int b = 2;
-  int c = 0;
-  int d[4] = {1, b, c = 3, 4};
+  int b = 2, c = 0, d[4] = {1, b, c = 3, 4};
   __builtin_print(d[0]);
   __builtin_print(d[1]);
   __builtin_print(d[2]);

test/codegen/decl.c

@@ -7,5 +7,7 @@ int main() {
   int i;
   int j = 2;
   __builtin_print(j);
+  int a = 3, b;
+  __builtin_print(a);
   return 0;
 }

test/codegen/decl.exp

@@ -1 +1,2 @@
 2
+3

test/codegen/for_stmt.c

@@ -12,7 +12,7 @@ int main() {
   // Nested for loop
   //
   int k = 0;
-  for (int i = 0; i < 5; i = i + 1) {
+  for (int i = 0, e = 5; i < e; i = i + 1) {
     for (int j = 0; j < 5; j = j + 1) {
       k = k + 1;
     }

test/codegen/pointer.c

@@ -1,7 +1,6 @@
 int main() {
   int a = 10;
-  int* b = &a;
-  int* c;
+  int *b = &a, *c;
   __builtin_print(a);
 
   *b = 5;