From 38d61c38a2913d419e4fa3793f92213c3d47d2e8 Mon Sep 17 00:00:00 2001 From: Craig Topper Date: Sun, 11 Feb 2018 22:32:29 +0000 Subject: [PATCH] [X86] Remove dead code from getMaskNode that looked for a i64 mask with a maskVT that wasn't v64i1. NFC llvm-svn: 324857 --- llvm/lib/Target/X86/X86ISelLowering.cpp | 30 +++++++++++------------------- 1 file changed, 11 insertions(+), 19 deletions(-) diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index e459c17..92ccf35 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -19782,27 +19782,19 @@ static SDValue getMaskNode(SDValue Mask, MVT MaskVT, } if (Mask.getSimpleValueType() == MVT::i64 && Subtarget.is32Bit()) { - if (MaskVT == MVT::v64i1) { - assert(Subtarget.hasBWI() && "Expected AVX512BW target!"); - // In case 32bit mode, bitcast i64 is illegal, extend/split it. - SDValue Lo, Hi; - Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Mask, - DAG.getConstant(0, dl, MVT::i32)); - Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Mask, - DAG.getConstant(1, dl, MVT::i32)); - - Lo = DAG.getBitcast(MVT::v32i1, Lo); - Hi = DAG.getBitcast(MVT::v32i1, Hi); + assert(MaskVT == MVT::v64i1 && "Expected v64i1 mask!"); + assert(Subtarget.hasBWI() && "Expected AVX512BW target!"); + // In case 32bit mode, bitcast i64 is illegal, extend/split it. + SDValue Lo, Hi; + Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Mask, + DAG.getConstant(0, dl, MVT::i32)); + Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Mask, + DAG.getConstant(1, dl, MVT::i32)); - return DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v64i1, Lo, Hi); - } else { - // MaskVT require < 64bit. Truncate mask (should succeed in any case), - // and bitcast. - MVT TruncVT = MVT::getIntegerVT(MaskVT.getSizeInBits()); - return DAG.getBitcast(MaskVT, - DAG.getNode(ISD::TRUNCATE, dl, TruncVT, Mask)); - } + Lo = DAG.getBitcast(MVT::v32i1, Lo); + Hi = DAG.getBitcast(MVT::v32i1, Hi); + return DAG.getNode(ISD::CONCAT_VECTORS, dl, MVT::v64i1, Lo, Hi); } else { MVT BitcastVT = MVT::getVectorVT(MVT::i1, Mask.getSimpleValueType().getSizeInBits()); -- 2.7.4