From: Chris Lattner <sabre@nondot.org>
Date: Wed, 16 Jan 2008 17:59:31 +0000 (+0000)
Subject: Fix a ppc long double regression I introduced yesterday due to a
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7e2e033e232a3e414040d6b01c8c07a1095a0983;p=oota-llvm.git

Fix a ppc long double regression I introduced yesterday due to a
simplification.  This fixes automotive-basicmath on PPC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46072 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 67da854aa4f..34825beffab 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1753,6 +1753,7 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
   case ISD::FP_EXTEND:
     assert(MVT::isFloatingPoint(VT) &&
            MVT::isFloatingPoint(Operand.getValueType()) && "Invalid FP cast!");
+    if (Operand.getValueType() == VT) return Operand;  // noop conversion.
     break;
   case ISD::SIGN_EXTEND:
     assert(MVT::isInteger(VT) && MVT::isInteger(Operand.getValueType()) &&