[turbofan] cleanup PointerMap

src/compiler/code-generator.h

Index: src/compiler/code-generator.h
diff --git a/src/compiler/code-generator.h b/src/compiler/code-generator.h
index 0824fd2174e6386e5823f5c9ec805ca23d9722d6..84c3922ee8149e45e4bcaf17f20a7a269a72aaf2 100644
--- a/src/compiler/code-generator.h
+++ b/src/compiler/code-generator.h
@@ -55,7 +55,7 @@ class CodeGenerator FINAL : public GapResolver::Assembler {
   bool IsNextInAssemblyOrder(RpoNumber block) const;
 
   // Record a safepoint with the given pointer map.
-  void RecordSafepoint(PointerMap* pointers, Safepoint::Kind kind,
+  void RecordSafepoint(ReferenceMap* references, Safepoint::Kind kind,
                        int arguments, Safepoint::DeoptMode deopt_mode);
 
   // Assemble code for the specified instruction.