From fcd8e9e3a21efb32172a6395e8697889962067e1 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 3 Feb 2008 07:13:32 +0000 Subject: [PATCH] handle the case where a node can become ready to process multiple times due to a RAUW. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46680 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/LegalizeTypes.cpp | 3 ++- lib/CodeGen/SelectionDAG/LegalizeTypes.h | 4 ++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp index 85a96a8e265..76b7527f68b 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp @@ -234,7 +234,8 @@ namespace { // Node updates can mean pretty much anything. It is possible that an // operand was set to something already processed (f.e.) in which case // this node could become ready. Recompoute its flags. - DTL.ReanalyzeNodeFlags(N); + if (N->getNodeId() != DAGTypeLegalizer::ReadyToProcess) + DTL.ReanalyzeNodeFlags(N); } }; } diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h index 912747df704..23d9bf125ec 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h +++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h @@ -40,7 +40,7 @@ namespace llvm { class VISIBILITY_HIDDEN DAGTypeLegalizer { TargetLowering &TLI; SelectionDAG &DAG; - +public: // NodeIDFlags - This pass uses the NodeID on the SDNodes to hold information // about the state of the node. The enum has all the values. enum NodeIDFlags { @@ -57,7 +57,7 @@ class VISIBILITY_HIDDEN DAGTypeLegalizer { // 1+ - This is a node which has this many unlegalized operands. }; - +private: enum LegalizeAction { Legal, // The target natively supports this type. Promote, // This type should be executed in a larger type. -- 2.34.1