Reland "Add out-of-line constant pool support to Arm."

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
diff --git a/src/x64/assembler-x64.cc b/src/x64/assembler-x64.cc
index 6853d24a0c047449df80ea581bc0fb15ad8cafa4..133a74d5568860896670103995dec39767141f35 100644
--- a/src/x64/assembler-x64.cc
+++ b/src/x64/assembler-x64.cc
@@ -3199,6 +3199,19 @@ void Assembler::RecordComment(const char* msg, bool force) {
 }
 
 
+MaybeObject* Assembler::AllocateConstantPool(Heap* heap) {
+  // No out-of-line constant pool support.
+  UNREACHABLE();
+  return NULL;
+}
+
+
+void Assembler::PopulateConstantPool(ConstantPoolArray* constant_pool) {
+  // No out-of-line constant pool support.
+  UNREACHABLE();
+}
+
+
 const int RelocInfo::kApplyMask = RelocInfo::kCodeTargetMask |
     1 << RelocInfo::RUNTIME_ENTRY |
     1 << RelocInfo::INTERNAL_REFERENCE |