From 2c76692496a96f2f6fb56496b442a3614fccaaaf Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 28 Jul 2003 03:39:57 +0000
Subject: [PATCH] Allow initializing variable initializers with variables

llvm-svn: 7354
---
 llvm/support/tools/TableGen/Record.cpp | 9 +++++++++
 llvm/support/tools/TableGen/Record.h   | 3 ++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/llvm/support/tools/TableGen/Record.cpp b/llvm/support/tools/TableGen/Record.cpp
index 469faa9b01bf..2aabef408ddd 100644
--- a/llvm/support/tools/TableGen/Record.cpp
+++ b/llvm/support/tools/TableGen/Record.cpp
@@ -127,6 +127,15 @@ Init *RecordRecTy::convertValue(DefInit *DI) {
   return DI;
 }
 
+Init *RecordRecTy::convertValue(TypedInit *VI) {
+  // Ensure that VI is compatible with Rec.
+  if (RecordRecTy *RRT = dynamic_cast<RecordRecTy*>(VI->getType()))
+    if (RRT->getRecord()->isSubClassOf(getRecord()) ||
+        RRT->getRecord() == getRecord())
+      return VI;
+  return 0;
+}
+
 //===----------------------------------------------------------------------===//
 //    Initializer implementations
 //===----------------------------------------------------------------------===//
diff --git a/llvm/support/tools/TableGen/Record.h b/llvm/support/tools/TableGen/Record.h
index 73b5c7410226..72123cb52057 100644
--- a/llvm/support/tools/TableGen/Record.h
+++ b/llvm/support/tools/TableGen/Record.h
@@ -136,7 +136,8 @@ public:
   Record *getRecord() const { return Rec; }
 
   Init *convertValue(UnsetInit *UI) { return (Init*)UI; }
-  Init *convertValue(   DefInit *DI);
+  Init *convertValue(  DefInit *DI);
+  Init *convertValue(TypedInit *VI); 
 
   void print(std::ostream &OS) const;
 };