Extract StackReuseCodegen tests.

test/libyul/evmCodeTransform/stackReuse/function_call.yul

@@ -0,0 +1,34 @@
+{
+    let b := f(1, 2)
+    function f(a, r) -> t { }
+    b := f(3, 4)
+}
+// ====
+// stackOptimization: true
+// ----
+// PUSH1 0x9
+// PUSH1 0x2
+// PUSH1 0x1
+// PUSH1 0xD
+// JUMP
+// JUMPDEST
+// PUSH1 0x16
+// JUMP
+// JUMPDEST
+// PUSH1 0x0
+// JUMPDEST
+// SWAP3
+// SWAP2
+// POP
+// POP
+// JUMP
+// JUMPDEST
+// PUSH1 0x20
+// PUSH1 0x4
+// PUSH1 0x3
+// PUSH1 0xD
+// JUMP
+// JUMPDEST
+// SWAP1
+// POP
+// POP