From eee2a11ee38307ea3b0bbd43c33e5fad182f0951 Mon Sep 17 00:00:00 2001 From: Craig Topper Date: Thu, 8 Aug 2013 08:03:12 +0000 Subject: [PATCH] Remove AllUndef check from one of the loops in getVectorShuffle. It was already handled by the 'AllLHS && AllRHS' check after the previous loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187965 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index bc6063c36d0..66be160afec 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -1351,17 +1351,13 @@ SDValue SelectionDAG::getVectorShuffle(EVT VT, SDLoc dl, SDValue N1, commuteShuffle(N1, N2, MaskVec); } - // If Identity shuffle, or all shuffle in to undef, return that node. - bool AllUndef = true; + // If Identity shuffle return that node. bool Identity = true; for (unsigned i = 0; i != NElts; ++i) { if (MaskVec[i] >= 0 && MaskVec[i] != (int)i) Identity = false; - if (MaskVec[i] >= 0) AllUndef = false; } if (Identity && NElts == N1.getValueType().getVectorNumElements()) return N1; - if (AllUndef) - return getUNDEF(VT); FoldingSetNodeID ID; SDValue Ops[2] = { N1, N2 }; -- 2.34.1