From 202478b96ef5c5f51256f7641c5d8fce918ad77f Mon Sep 17 00:00:00 2001
From: Pawel Kozlowski <pkozlowski.opensource@gmail.com>
Date: Tue, 22 Oct 2019 16:42:23 +0200
Subject: [PATCH] perf(ivy): avoid repeated tNode.initialInputs reads

---
 packages/core/src/render3/instructions/shared.ts | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/packages/core/src/render3/instructions/shared.ts b/packages/core/src/render3/instructions/shared.ts
index 661fc98429234a..2a3015658b6dd9 100644
--- a/packages/core/src/render3/instructions/shared.ts
+++ b/packages/core/src/render3/instructions/shared.ts
@@ -1107,6 +1107,7 @@ function instantiateAllDirectives(
 
   attachPatchData(native, lView);
 
+  const initialInputs = tNode.initialInputs;
   for (let i = start; i < end; i++) {
     const def = tView.data[i] as DirectiveDef<any>;
     const isComponent = isComponentDef(def);
@@ -1119,8 +1120,8 @@ function instantiateAllDirectives(
     const directive = getNodeInjectable(tView.data, lView, i, tNode);
     attachPatchData(directive, lView);
 
-    if (tNode.initialInputs !== null) {
-      setInputsFromAttrs(lView, i - start, directive, def, tNode);
+    if (initialInputs !== null) {
+      setInputsFromAttrs(lView, i - start, directive, def, tNode, initialInputs !);
     }
 
     if (isComponent) {
@@ -1352,8 +1353,8 @@ export function elementAttributeInternal(
  * @param tNode The static data for this node
  */
 function setInputsFromAttrs<T>(
-    lView: LView, directiveIndex: number, instance: T, def: DirectiveDef<T>, tNode: TNode): void {
-  const initialInputData = tNode.initialInputs as InitialInputData;
+    lView: LView, directiveIndex: number, instance: T, def: DirectiveDef<T>, tNode: TNode,
+    initialInputData: InitialInputData): void {
   const initialInputs: InitialInputs|null = initialInputData ![directiveIndex];
   if (initialInputs !== null) {
     const setInput = def.setInput;