From 46f55527d848bcc7cff1210137caff29bbf1b010 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 6 Oct 2010 04:55:48 +0000
Subject: Generalize tblgen's dag parsing logic to handle arbitrary expressions
 as the operator of the dag.  Specifically, this allows parsing things like
 (F.x 4) in addition to just (a 4).

Unfortunately, this runs afoul of an idiom being used by llvmc.  It
is using dags like (foo [1,2,3]) to represent a list of stuff being
passed into foo.  With this change, this is parsed as a [1,2,3]
subscript on foo instead of being the first argument to the dag.
Cope with this in the short term by requiring a "-llvmc-temp-hack"
argument to tblgen to get the old parsing behavior.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115742 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/TableGen/Dag.td | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'test/TableGen')

diff --git a/test/TableGen/Dag.td b/test/TableGen/Dag.td
index 8b406a5..d3481a5 100644
--- a/test/TableGen/Dag.td
+++ b/test/TableGen/Dag.td
@@ -33,3 +33,39 @@ def VAL2 : C2<Y2>;
 // CHECK-NEXT: dag d = (X2 Y2)
 // CHECK-NEXT: dag e = (Y2 X2)
 
+
+//===----------------------------------------------------------------------===//
+// Complex dag operator (F.TheOp).
+
+class operator;
+def somedef1 : operator;
+def somedef2 : operator;
+
+class foo<operator a> {
+ operator TheOp = a;
+}
+
+class bar<foo F, operator a> {
+  dag Dag1 = (somedef1 1);
+  dag Dag2 = (a 2);
+  dag Dag3 = (F.TheOp 2);
+}
+
+def foo1 : foo<somedef1>;
+def foo2 : foo<somedef2>;
+
+def VAL3 : bar<foo1, somedef1>;
+
+// CHECK:     def VAL3 {	// bar
+// CHECK-NEXT:  dag Dag1 = (somedef1 1);
+// CHECK-NEXT:  dag Dag2 = (somedef1 2);
+// CHECK-NEXT:  dag Dag3 = (somedef1 2);
+// CHECK-NEXT: }
+
+
+def VAL4 : bar<foo2, somedef2>;
+// CHECK:      def VAL4 {
+// CHECK-NEXT:  dag Dag1 = (somedef1 1);
+// CHECK-NEXT:  dag Dag2 = (somedef2 2);
+// CHECK-NEXT:  dag Dag3 = (somedef2 2);
+// CHECK-NEXT: }
-- 
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