Special case the recording of constant pool entries in the slot buffer.

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index 89b0e5a6223d2549196e4d1e9b52e24576e61a59..d4d773ed3d919f17eb90729b63cf827577583005 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -384,6 +384,10 @@ class RelocInfo BASE_EMBEDDED {
   // instructions).
   bool IsCodedSpecially();
 
+  // If true, the pointer this relocation info refers to is an entry in the
+  // constant pool, otherwise the pointer is embedded in the instruction stream.
+  bool IsInConstantPool();
+
   // Read/modify the code target in the branch/call instruction
   // this relocation applies to;
   // can only be called if IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)
@@ -406,6 +410,9 @@ class RelocInfo BASE_EMBEDDED {
   INLINE(Code* code_age_stub());
   INLINE(void set_code_age_stub(Code* stub));
 
+  // Returns the address of the constant pool entry where the target address
+  // is held.  This should only be called if IsInConstantPool returns true.
+  INLINE(Address constant_pool_entry_address());

[Michael Starzinger, 2014/03/07 14:36:59]

nit: Let's add an empty newline for readability after the declaration.

[rmcilroy, 2014/03/10 12:25:23]

Done (also for target_address_address declaration below).

   // Read the address of the word containing the target_address in an
   // instruction stream.  What this means exactly is architecture-independent.
   // The only architecture-independent user of this function is the serializer.