From 3ccbd3f32f94827bb9e9b5e638aa883db5deaf4b Mon Sep 17 00:00:00 2001 From: Craig Topper Date: Mon, 12 Feb 2018 03:02:01 +0000 Subject: [PATCH] [X86] Remove check for X86ISD::AND with no flag users from the TEST instruction immediate shrinking code. We turn X86ISD::AND with no flag users back to ISD::AND in PreprocessISelDAG. llvm-svn: 324864 --- llvm/lib/Target/X86/X86ISelDAGToDAG.cpp | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp index 5313fc6..95442c0 100644 --- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -3080,8 +3080,7 @@ void X86DAGToDAGISel::Select(SDNode *Node) { // Look for (X86cmp (and $op, $imm), 0) and see if we can convert it to // use a smaller encoding. // Look past the truncate if CMP is the only use of it. - if ((N0.getOpcode() == ISD::AND || - (N0.getResNo() == 0 && N0.getOpcode() == X86ISD::AND)) && + if (N0.getOpcode() == ISD::AND && N0.getNode()->hasOneUse() && N0.getValueType() != MVT::i8 && X86::isZeroNode(N1)) { -- 2.7.4