[compiler] Delay allocation of code-embedded heap numbers.

src/compiler/x64/code-generator-x64.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.
 
 #include "src/compiler/code-generator.h"
 
 #include <limits>
 
 #include "src/compilation-info.h"
 #include "src/compiler/code-generator-impl.h"
@@ skipping 3002 matching lines @@
         }
         case Constant::kInt64:
           if (RelocInfo::IsWasmPtrReference(src.rmode())) {
             __ movq(dst, src.ToInt64(), src.rmode());
           } else {
             DCHECK(!RelocInfo::IsWasmSizeReference(src.rmode()));
             __ Set(dst, src.ToInt64());
           }
           break;
         case Constant::kFloat32:
-          __ Move(dst,
-                  isolate()->factory()->NewNumber(src.ToFloat32(), TENURED));
+          __ MoveNumber(dst, src.ToFloat32());
           break;
         case Constant::kFloat64:
-          __ Move(dst,
-                  isolate()->factory()->NewNumber(src.ToFloat64(), TENURED));
+          __ MoveNumber(dst, src.ToFloat64());
           break;
         case Constant::kExternalReference:
           __ Move(dst, src.ToExternalReference());
           break;
         case Constant::kHeapObject: {
           Handle<HeapObject> src_object = src.ToHeapObject();
           Heap::RootListIndex index;
           if (IsMaterializableFromRoot(src_object, &index)) {
             __ LoadRoot(dst, index);
           } else {
@@ skipping 175 matching lines @@
     int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc;
     __ Nop(padding_size);
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8