[turbofan] Run everything after representation selection concurrently.

src/arm64/builtins-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 2733 matching lines @@
   __ Ldr(x5, MemOperand(x2, -kPointerSize, PostIndex));
   __ Str(x5, MemOperand(x6, -kPointerSize, PreIndex));
   __ Bind(&loop_check);
   __ Cmp(x6, x4);
   __ B(gt, &loop_header);
 
   // Call the constructor with x0, x1, and x3 unmodified.
   __ Jump(masm->isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
 }
 
+// static
+void Builtins::Generate_AllocateInNewSpace(MacroAssembler* masm) {
+  ASM_LOCATION("Builtins::Generate_AllocateInNewSpace");
+  // ----------- S t a t e -------------
+  //  -- x1 : requested object size (untagged)
+  //  -- lr : return address
+  // -----------------------------------
+  Label runtime;
+  __ Allocate(x1, x0, x2, x3, &runtime, NO_ALLOCATION_FLAGS);
+  __ Ret();
+
+  __ Bind(&runtime);
+  __ SmiTag(x1);
+  __ Push(x1);
+  __ Move(cp, Smi::FromInt(0));
+  __ TailCallRuntime(Runtime::kAllocateInNewSpace);
+}
+
+// static
+void Builtins::Generate_AllocateInOldSpace(MacroAssembler* masm) {
+  ASM_LOCATION("Builtins::Generate_AllocateInOldSpace");
+  // ----------- S t a t e -------------
+  //  -- x1 : requested object size (untagged)
+  //  -- lr : return address
+  // -----------------------------------
+  Label runtime;
+  __ Allocate(x1, x0, x2, x3, &runtime, PRETENURE);
+  __ Ret();
+
+  __ Bind(&runtime);
+  __ SmiTag(x1);
+  __ Move(x2, Smi::FromInt(AllocateTargetSpace::encode(OLD_SPACE)));
+  __ Push(x1, x2);
+  __ Move(cp, Smi::FromInt(0));
+  __ TailCallRuntime(Runtime::kAllocateInTargetSpace);
+}
 
 void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) {
   ASM_LOCATION("Builtins::Generate_ArgumentsAdaptorTrampoline");
   // ----------- S t a t e -------------
   //  -- x0 : actual number of arguments
   //  -- x1 : function (passed through to callee)
   //  -- x2 : expected number of arguments
   //  -- x3 : new target (passed through to callee)
   // -----------------------------------
 
@@ skipping 133 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM