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

src/compiler/arm/code-generator-arm.cc

 // Copyright 2014 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 "src/arm/macro-assembler-arm.h"
 #include "src/assembler-inl.h"
 #include "src/compilation-info.h"
 #include "src/compiler/code-generator-impl.h"
@@ skipping 30 matching lines @@
     }
     UNREACHABLE();
   }
 
   Operand InputImmediate(size_t index) {
     Constant constant = ToConstant(instr_->InputAt(index));
     switch (constant.type()) {
       case Constant::kInt32:
         return Operand(constant.ToInt32());
       case Constant::kFloat32:
-        return Operand(
-            isolate()->factory()->NewNumber(constant.ToFloat32(), TENURED));
+        return Operand::EmbeddedNumber(constant.ToFloat32());
       case Constant::kFloat64:
-        return Operand(
-            isolate()->factory()->NewNumber(constant.ToFloat64(), TENURED));
+        return Operand::EmbeddedNumber(constant.ToFloat64());
       case Constant::kInt64:
       case Constant::kExternalReference:
       case Constant::kHeapObject:
       case Constant::kRpoNumber:
         break;
     }
     UNREACHABLE();
   }
 
   Operand InputOperand2(size_t first_index) {
@@ skipping 2901 matching lines @@
           if (RelocInfo::IsWasmReference(src.rmode())) {
             __ mov(dst, Operand(src.ToInt32(), src.rmode()));
           } else {
             __ mov(dst, Operand(src.ToInt32()));
           }
           break;
         case Constant::kInt64:
           UNREACHABLE();
           break;
         case Constant::kFloat32:
-          __ Move(dst,
-                  isolate()->factory()->NewNumber(src.ToFloat32(), TENURED));
+          __ mov(dst, Operand::EmbeddedNumber(src.ToFloat32()));
           break;
         case Constant::kFloat64:
-          __ Move(dst,
-                  isolate()->factory()->NewNumber(src.ToFloat64(), TENURED));
+          __ mov(dst, Operand::EmbeddedNumber(src.ToFloat64()));
           break;
         case Constant::kExternalReference:
           __ mov(dst, Operand(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 248 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8