From e86097af5598e44727875f00e492d43c978239be Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 28 Feb 2010 02:31:26 +0000
Subject: add infrastructure to support forming selectnodeto.  Not used yet
 because I have to go on another detour first.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97362 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/TableGen/DAGISelMatcherOpt.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'utils/TableGen/DAGISelMatcherOpt.cpp')

diff --git a/utils/TableGen/DAGISelMatcherOpt.cpp b/utils/TableGen/DAGISelMatcherOpt.cpp
index 1ce5733..7953457 100644
--- a/utils/TableGen/DAGISelMatcherOpt.cpp
+++ b/utils/TableGen/DAGISelMatcherOpt.cpp
@@ -56,6 +56,7 @@ static void ContractNodes(OwningPtr<Matcher> &MatcherPtr) {
     }
   }
   
+  // Zap movechild -> moveparent.
   if (MoveChildMatcher *MC = dyn_cast<MoveChildMatcher>(N))
     if (MoveParentMatcher *MP = 
           dyn_cast<MoveParentMatcher>(MC->getNext())) {
@@ -63,6 +64,14 @@ static void ContractNodes(OwningPtr<Matcher> &MatcherPtr) {
       return ContractNodes(MatcherPtr);
     }
   
+  // Turn EmitNode->CompleteMatch into SelectNodeTo if we can.
+  if (EmitNodeMatcher *EN = dyn_cast<EmitNodeMatcher>(N))
+    if (CompleteMatchMatcher *CM = cast<CompleteMatchMatcher>(EN->getNext())) {
+      (void)CM;
+      
+      
+    }
+  
   ContractNodes(N->getNextPtr());
 }
 
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