Revert "Revert [gasm] Implement ReduceArrayPrototypeReduce using the graph assembler"

This reverts commit c0fbfcd8.

Reason for revert: Fix found.

Original change's description:
> Revert [gasm] Implement ReduceArrayPrototypeReduce using the graph assembler
> 
> Reverting due to a nondeterministic correctness issue bisected to this
> change. The intent is to reland once we fully understand and have
> fixed the problem.
> 
> The original CL landed in https://crrev.com/c/1934329.
> The revert on master is https://crrev.com/c/2049763.
> The revert on 8.0 is https://crrev.com/c/2049764.
> 
> Bug: v8:9972,chromium:1049982
> Change-Id: I171624bdeb18831e70869ae806c73529c240be4a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049763
> Reviewed-by: Georg Neis <neis@chromium.org>
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66215}

TBR=neis@chromium.org,jgruber@chromium.org

Change-Id: Id12a01dc72558639b26af58ff56cd0b11916eec2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9972, chromium:1049982
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2050395Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66222}

src/compiler/js-call-reducer.h

@@ -101,9 +101,9 @@ class V8_EXPORT_PRIVATE JSCallReducer final : public AdvancedReducer {
   Reduction ReduceArrayPrototypePush(Node* node);
   Reduction ReduceArrayPrototypeShift(Node* node);
   Reduction ReduceArrayPrototypeSlice(Node* node);
-  enum class ArrayReduceDirection { kLeft, kRight };
-  Reduction ReduceArrayReduce(Node* node, ArrayReduceDirection direction,
-                              const SharedFunctionInfoRef& shared);
+  Reduction ReduceArrayReduce(Node* node, const SharedFunctionInfoRef& shared);
+  Reduction ReduceArrayReduceRight(Node* node,
+                                   const SharedFunctionInfoRef& shared);
   Reduction ReduceArraySome(Node* node, const SharedFunctionInfoRef& shared);
 
   enum class ArrayIteratorKind { kArray, kTypedArray };
@@ -205,20 +205,6 @@ class V8_EXPORT_PRIVATE JSCallReducer final : public AdvancedReducer {
   // The pendant to ReplaceWithValue when using GraphAssembler-based reductions.
   Reduction ReplaceWithSubgraph(JSCallReducerAssembler* gasm, Node* subgraph);
 
-  void WireInCallbackIsCallableCheck(Node* fncallback, Node* context,
-                                     Node* check_frame_state, Node* effect,
-                                     Node** control, Node** check_fail,
-                                     Node** check_throw);
-  void RewirePostCallbackExceptionEdges(Node* check_throw, Node* on_exception,
-                                        Node* effect, Node** check_fail,
-                                        Node** control);
-  Node* WireInLoopStart(Node* k, Node** control, Node** effect);
-  void WireInLoopEnd(Node* loop, Node* eloop, Node* vloop, Node* k,
-                     Node* control, Node* effect);
-  Node* SafeLoadElement(ElementsKind kind, Node* receiver, Node* control,
-                        Node** effect, Node** k,
-                        const FeedbackSource& feedback);
-
   // Helper to verify promise receiver maps are as expected.
   // On bailout from a reduction, be sure to return inference.NoChange().
   bool DoPromiseChecks(MapInference* inference);