perf($parse): Inline constants

Inline constants definitions in function calls, array definitions
and object values.

For the expression [1, {foo: "bar"}, 1 + 2] it changes it from

```js
// After some reordering and cleanup
var v1 = 1;
var v2 = "bar";
var v3 = {foo: v2};
var v4 = 1;
var v5 = 2;
var v6 = plus(v4, v5);
var v7 = [v1, v3, v6];
return v7;
```

to

```js
return [1, {foo: "bar"}, plus(1, 2)];
```

Expression parts that are not constants did not change, and still generate a lot
of intermediate variables.

Closes: #14293

Author: lgalfaso

src/ng/parse.js

@@ -924,7 +924,7 @@ ASTCompiler.prototype = {
     case AST.Literal:
       expression = this.escape(ast.value);
       this.assign(intoId, expression);
-      recursionFn(expression);
+      recursionFn(intoId || expression);
       break;
     case AST.UnaryExpression:
       this.recurse(ast.argument, undefined, undefined, function(expr) { right = expr; });
@@ -1046,7 +1046,7 @@ ASTCompiler.prototype = {
           self.if_(self.notNull(right), function() {
             self.addEnsureSafeFunction(right);
             forEach(ast.arguments, function(expr) {
-              self.recurse(expr, self.nextId(), undefined, function(argument) {
+              self.recurse(expr, ast.constant ? undefined : self.nextId(), undefined, function(argument) {
                 args.push(self.ensureSafeObject(argument));
               });
             });
@@ -1087,18 +1087,18 @@ ASTCompiler.prototype = {
     case AST.ArrayExpression:
       args = [];
       forEach(ast.elements, function(expr) {
-        self.recurse(expr, self.nextId(), undefined, function(argument) {
+        self.recurse(expr, ast.constant ? undefined : self.nextId(), undefined, function(argument) {
           args.push(argument);
         });
       });
       expression = '[' + args.join(',') + ']';
       this.assign(intoId, expression);
-      recursionFn(expression);
+      recursionFn(intoId || expression);
       break;
     case AST.ObjectExpression:
       args = [];
       forEach(ast.properties, function(property) {
-        self.recurse(property.value, self.nextId(), undefined, function(expr) {
+        self.recurse(property.value, ast.constant ? undefined : self.nextId(), undefined, function(expr) {
           args.push(self.escape(
               property.key.type === AST.Identifier ? property.key.name :
                 ('' + property.key.value)) +
@@ -1107,19 +1107,19 @@ ASTCompiler.prototype = {
       });
       expression = '{' + args.join(',') + '}';
       this.assign(intoId, expression);
-      recursionFn(expression);
+      recursionFn(intoId || expression);
       break;
     case AST.ThisExpression:
       this.assign(intoId, 's');
-      recursionFn('s');
+      recursionFn(intoId || 's');
       break;
     case AST.LocalsExpression:
       this.assign(intoId, 'l');
-      recursionFn('l');
+      recursionFn(intoId || 'l');
       break;
     case AST.NGValueParameter:
       this.assign(intoId, 'v');
-      recursionFn('v');
+      recursionFn(intoId || 'v');
       break;
     }
   },