Make snapshots reproducible.

src/ia32/assembler-ia32-inl.h

Index: src/ia32/assembler-ia32-inl.h
diff --git a/src/ia32/assembler-ia32-inl.h b/src/ia32/assembler-ia32-inl.h
index 05cc23a71d952cb4e4727d2237c2780c06faa0d5..74dddc708dfa1423493447843c5b3e45f910f70a 100644
--- a/src/ia32/assembler-ia32-inl.h
+++ b/src/ia32/assembler-ia32-inl.h
@@ -249,6 +249,18 @@ Object** RelocInfo::call_object_address() {
 }
 
 
+void RelocInfo::WipeOut() {
+  if (IsEmbeddedObject(rmode_) || IsExternalReference(rmode_)) {
+    Memory::Address_at(pc_) = NULL;
+  } else if (IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)) {
+    // Effectively write zero into the relocation.
+    Assembler::set_target_address_at(pc_, pc_ + sizeof(int32_t));
+  } else {
+    UNREACHABLE();
+  }
+}
+
+
 bool RelocInfo::IsPatchedReturnSequence() {
   return *pc_ == kCallOpcode;
 }