chore(tests): test tail calls to ensure arguments are correct when swapping them around between calls

Author: SuperFola

tests/unittests/resources/CompilerSuite/ir/tail_call.ark

@@ -0,0 +1,6 @@
+(let f (fun (a b)
+  (if (nil? b)
+    (f "wrong" a)
+    (print b))))
+
+(f "correct" nil)

tests/unittests/resources/CompilerSuite/ir/tail_call.expected

@@ -0,0 +1,30 @@
+page_0
+	LOAD_CONST 0
+	STORE 0
+	PUSH_RETURN_ADDRESS L3
+	BUILTIN 2
+	LOAD_CONST 2
+	LOAD_FAST_BY_INDEX 0
+	CALL 2
+.L3:
+	HALT 0
+
+page_1
+	STORE 1
+	STORE 2
+	LOAD_FAST_BY_INDEX 0
+	IS_NIL 0
+	POP_JUMP_IF_TRUE L0
+	PUSH_RETURN_ADDRESS L1
+	LOAD_FAST_BY_INDEX 0
+	BUILTIN 9
+	CALL 1
+.L1:
+	JUMP L2
+.L0:
+	LOAD_SYMBOL 1
+	LOAD_CONST 1
+	JUMP 0
+.L2:
+	RET 0
+	HALT 0