Implement a correct copy constructor for Record. Now that we're using…

… the ID number as a key in maps (for determinism), it is imperative that ID numbers be globally unique, even when we copy construct a Record.

This fixes some obscure failure cases involving registers defined inside multiclasses or foreach constructs that would not receive a unique ID, and would end up being omitted from the AsmMatcher tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164251 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/TableGen/Record.h

@@ -1328,6 +1328,14 @@ class Record {
     TrackedRecords(records), TheInit(0) {
     init();
   }
+
+  // When copy-constructing a Record, we must still guarantee a globally unique
+  // ID number.  All other fields can be copied normally.
+  Record(const Record &O) :
+    ID(LastID++), Name(O.Name), Locs(O.Locs), TemplateArgs(O.TemplateArgs),
+    Values(O.Values), SuperClasses(O.SuperClasses),
+    TrackedRecords(O.TrackedRecords), TheInit(O.TheInit) { }
+
   ~Record() {}