Make assembler not include the entire compiler.

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 26 matching lines @@
 // A light-weight PPC Assembler
 // Generates user mode instructions for the PPC architecture up
 
 #ifndef V8_PPC_ASSEMBLER_PPC_H_
 #define V8_PPC_ASSEMBLER_PPC_H_
 
 #include <stdio.h>
 #include <vector>
 
 #include "src/assembler.h"
-#include "src/compiler.h"
 #include "src/ppc/constants-ppc.h"
 
 #define ABI_USES_FUNCTION_DESCRIPTORS \
   (V8_HOST_ARCH_PPC && (V8_OS_AIX ||    \
                       (V8_TARGET_ARCH_PPC64 && V8_TARGET_BIG_ENDIAN)))
 
 #define ABI_PASSES_HANDLES_IN_REGS \
   (!V8_HOST_ARCH_PPC || V8_OS_AIX || V8_TARGET_ARCH_PPC64)
 
 #define ABI_RETURNS_OBJECT_PAIRS_IN_REGS \
@@ skipping 1387 matching lines @@
 
 
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) { assembler->CheckBuffer(); }
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PPC_ASSEMBLER_PPC_H_