From d73dc544f5e37e6d58befc71e57da3c132804543 Mon Sep 17 00:00:00 2001 From: Justin Holewinski Date: Wed, 20 Mar 2013 00:10:32 +0000 Subject: Propagate DAG node ordering during type legalization and instruction selection A node's ordering is only propagated during legalization if (a) the new node does not have an ordering (is not a CSE'd node), or (b) the new node has an ordering that is higher than the node being legalized. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177465 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp') diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index c3b6276a8d..15001f506b 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -785,8 +785,10 @@ void SelectionDAGISel::DoInstructionSelection() { if (ResNode == Node || Node->getOpcode() == ISD::DELETED_NODE) continue; // Replace node. - if (ResNode) + if (ResNode) { + CurDAG->AssignOrdering(ResNode, CurDAG->GetOrdering(Node)); ReplaceUses(Node, ResNode); + } // If after the replacement this node is not used any more, // remove this dead node. -- cgit v1.2.3-18-g5258