From a1a68ae0617610c816e590879ce121af058ba60c Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 28 Sep 2005 18:28:29 +0000
Subject: [PATCH] collect commutativity information

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23499 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/TableGen/DAGISelEmitter.cpp | 16 ++++++++++++++++
 utils/TableGen/DAGISelEmitter.h   |  8 ++++++++
 2 files changed, 24 insertions(+)

diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp
index 9f5e387b169..dde7f6770df 100644
--- a/utils/TableGen/DAGISelEmitter.cpp
+++ b/utils/TableGen/DAGISelEmitter.cpp
@@ -137,6 +137,22 @@ SDNodeInfo::SDNodeInfo(Record *R) : Def(R) {
   NumResults = TypeProfile->getValueAsInt("NumResults");
   NumOperands = TypeProfile->getValueAsInt("NumOperands");
   
+  // Parse the properties.
+  Properties = 0;
+  ListInit *LI = R->getValueAsListInit("Properties");
+  for (unsigned i = 0, e = LI->getSize(); i != e; ++i) {
+    DefInit *DI = dynamic_cast<DefInit*>(LI->getElement(i));
+    assert(DI && "Properties list must be list of defs!");
+    if (DI->getDef()->getName() == "SDNPCommutative") {
+      Properties |= 1 << SDNPCommutative;
+    } else {
+      std::cerr << "Unknown SD Node property '" << DI->getDef()->getName()
+                << "' on node '" << R->getName() << "'!\n";
+      exit(1);
+    }
+  }
+  
+  
   // Parse the type constraints.
   ListInit *Constraints = TypeProfile->getValueAsListInit("Constraints");
   for (unsigned i = 0, e = Constraints->getSize(); i != e; ++i) {
diff --git a/utils/TableGen/DAGISelEmitter.h b/utils/TableGen/DAGISelEmitter.h
index 8ec729926b9..48f941d8593 100644
--- a/utils/TableGen/DAGISelEmitter.h
+++ b/utils/TableGen/DAGISelEmitter.h
@@ -69,6 +69,7 @@ namespace llvm {
     Record *Def;
     std::string EnumName;
     std::string SDClassName;
+    unsigned Properties;
     unsigned NumResults;
     int NumOperands;
     std::vector<SDTypeConstraint> TypeConstraints;
@@ -84,6 +85,13 @@ namespace llvm {
     const std::vector<SDTypeConstraint> &getTypeConstraints() const {
       return TypeConstraints;
     }
+    
+    // SelectionDAG node properties.
+    enum SDNP { SDNPCommutative };
+
+    /// hasProperty - Return true if this node has the specified property.
+    ///
+    bool hasProperty(enum SDNP Prop) const { return Properties & (1 << Prop); }
 
     /// ApplyTypeConstraints - Given a node in a pattern, apply the type
     /// constraints for this node to the operands of the node.  This returns