[turbofan] escape analysis: remove TypeGuard renamings of dematerialized...

[turbofan] escape analysis: remove TypeGuard renamings of dematerialized allocations from the effect chain

Change-Id: Ie7b43feda381647523cb8cc3e7965823d3006063
Reviewed-on: https://chromium-review.googlesource.com/1188140Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55386}

src/compiler/escape-analysis-reducer.cc

@@ -99,7 +99,8 @@ Reduction EscapeAnalysisReducer::Reduce(Node* node) {
   }
 
   switch (node->opcode()) {
-    case IrOpcode::kAllocate: {
+    case IrOpcode::kAllocate:
+    case IrOpcode::kTypeGuard: {
       const VirtualObject* vobject = analysis_result().GetVirtualObject(node);
       if (vobject && !vobject->HasEscaped()) {
         RelaxEffectsAndControls(node);