From: Chris Lattner <sabre@nondot.org>
Date: Sun, 4 Mar 2007 20:01:46 +0000 (+0000)
Subject: eliminate some ops if they have an undef RHS
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=175415e116feef0def0f7c084cca3646a403412b;p=oota-llvm.git

eliminate some ops if they have an undef RHS


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34908 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 2679a8ccd8a..0de71203e4d 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1325,6 +1325,8 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
   if (N2.getOpcode() == ISD::UNDEF) {
     switch (Opcode) {
     case ISD::ADD:
+    case ISD::ADDC:
+    case ISD::ADDE:
     case ISD::SUB:
     case ISD::FADD:
     case ISD::FSUB: