From 6907708c23303703c6f89e055d1c204c5abb27a5 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Fri, 6 Jan 2006 01:56:02 +0000 Subject: [PATCH] Revert the previous check-in. Leave shl x, 1 along for target to deal with. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25121 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 --- 1 file changed, 3 deletions(-) diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 9770ae232bf..30a4c9f637c 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1282,9 +1282,6 @@ SDOperand DAGCombiner::visitSHL(SDNode *N) { // fold (shl x, 0) -> x if (N1C && N1C->isNullValue()) return N0; - // fold (shl x, 1) -> (add x, x) - if (N1C && N1C->getValue() == 1) - return DAG.getNode(ISD::ADD, VT, N0, N0); // if (shl x, c) is known to be zero, return 0 if (N1C && MaskedValueIsZero(SDOperand(N, 0), ~0ULL >> (64-OpSizeInBits),TLI)) return DAG.getConstant(0, VT);