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

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index 35279e557c8a99d8daccf713b4c3be4e1892d8a9..cf14172b564c0534831682929a2653d5756060cc 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -300,6 +300,11 @@ bool RelocInfo::IsCodedSpecially() {
 }
 
 
+bool RelocInfo::IsInConstantPool() {
+  return Assembler::IsLdrPcImmediateOffset(Memory::int32_at(pc_));
+}
+
+
 void RelocInfo::PatchCode(byte* instructions, int instruction_count) {
   // Patch the code at the current address with the supplied instructions.
   Instr* pc = reinterpret_cast<Instr*>(pc_);