From a93ec3ebfb2b6382c79e577cff4c05c204ed4544 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Fri, 21 Jan 2005 18:01:22 +0000 Subject: [PATCH] Unary token factor nodes are unneeded. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19727 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index c91586b4d42..3d7d3bfa6fa 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -511,6 +511,8 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, unsigned OpOpcode = Operand.Val->getOpcode(); switch (Opcode) { + case ISD::TokenFactor: + return Operand; // Factor of one node? No factor. case ISD::SIGN_EXTEND: if (Operand.getValueType() == VT) return Operand; // noop extension if (OpOpcode == ISD::SIGN_EXTEND || OpOpcode == ISD::ZERO_EXTEND)