[turbofan] Remove the leftover LoadBuffer hacks.

R=jarin@chromium.org

Committed: https://crrev.com/20eff45de11609934be339dffe46276ff0a4bc22
Cr-Commit-Position: refs/heads/master@{#35509}

Review URL: https://codereview.chromium.org/1887343002

Cr-Commit-Position: refs/heads/master@{#35550}

src/compiler/pipeline.cc

@@ -771,12 +771,6 @@ struct SimplifiedLoweringPhase {
                                 data->source_positions());
     lowering.LowerAllNodes();
 
-    // TODO(bmeurer): See comment on SimplifiedLowering::abort_compilation_.
-    if (lowering.abort_compilation_) {
-      data->set_compilation_failed();
-      return;
-    }
-
     JSGraphReducer graph_reducer(data->jsgraph(), temp_zone);
     DeadCodeElimination dead_code_elimination(&graph_reducer, data->graph(),
                                               data->common());
@@ -1287,9 +1281,6 @@ Handle<Code> Pipeline::GenerateCode() {
   // Kill the Typer and thereby uninstall the decorator (if any).
   typer.Reset(nullptr);
 
-  // TODO(bmeurer): See comment on SimplifiedLowering::abort_compilation_.
-  if (data.compilation_failed()) return Handle<Code>::null();
-
   return ScheduleAndGenerateCode(
       Linkage::ComputeIncoming(data.instruction_zone(), info()));
 }

src/compiler/simplified-lowering.h

@@ -38,11 +38,6 @@ class SimplifiedLowering final {
   void DoStoreBuffer(Node* node);
   void DoShift(Node* node, Operator const* op, Type* rhs_type);
 
-  // TODO(bmeurer): This is a gigantic hack to support the gigantic LoadBuffer
-  // typing hack to support the gigantic "asm.js should be fast without proper
-  // verifier"-hack, ... Kill this! Soon! Really soon! I'm serious!
-  bool abort_compilation_ = false;
-
  private:
   JSGraph* const jsgraph_;
   Zone* const zone_;