PPC/s390: [compiler] Delay allocation of code-embedded heap numbers.

src/ppc/assembler-ppc.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 387 matching lines @@
   // is too small, a fatal error occurs. No deallocation of the buffer is done
   // upon destruction of the assembler.
   Assembler(Isolate* isolate, void* buffer, int buffer_size)
       : Assembler(IsolateData(isolate), buffer, buffer_size) {}
   Assembler(IsolateData isolate_data, void* buffer, int buffer_size);
   virtual ~Assembler() {}
 
   // GetCode emits any pending (non-emitted) code and fills the descriptor
   // desc. GetCode() is idempotent; it returns the same result if no other
   // Assembler functions are invoked in between GetCode() calls.
-  void GetCode(CodeDesc* desc);
+  void GetCode(Isolate* isolate, CodeDesc* desc);
 
   // Label operations & relative jumps (PPUM Appendix D)
   //
   // Takes a branch opcode (cc) and a label (L) and generates
   // either a backward branch or a forward branch and links it
   // to the label fixup chain. Usage:
   //
   // Label L;    // unbound label
   // j(cc, &L);  // forward branch to unbound label
   // bind(&L);   // bind label to the current pc
@@ skipping 67 matching lines @@
   // This is for calls and branches within generated code.
   inline static void deserialization_set_special_target_at(
       Isolate* isolate, Address instruction_payload, Code* code,
       Address target);
 
   // This sets the internal reference at the pc.
   inline static void deserialization_set_target_internal_reference_at(
       Isolate* isolate, Address pc, Address target,
       RelocInfo::Mode mode = RelocInfo::INTERNAL_REFERENCE);
 
+  static void set_heap_number(Handle<HeapObject> number, Address pc) {
+    UNIMPLEMENTED();
+  }
+
   // Size of an instruction.
   static constexpr int kInstrSize = sizeof(Instr);
 
   // Here we are patching the address in the LUI/ORI instruction pair.
   // These values are used in the serialization process and must be zero for
   // PPC platform, as Code, Embedded Object or External-reference pointers
   // are split across two consecutive instructions and don't exist separately
   // in the code, so the serializer should not step forwards in memory after
   // a target is resolved and written.
   static constexpr int kSpecialTargetSize = 0;
@@ skipping 1051 matching lines @@
   PatchingAssembler(IsolateData isolate_data, byte* address, int instructions);
   ~PatchingAssembler();
 
   void FlushICache(Isolate* isolate);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PPC_ASSEMBLER_PPC_H_