From 7289ed2ee7828ce52ddf37284da5f60190db3086 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Thu, 5 Nov 2009 23:53:08 +0000 Subject: [PATCH] Use SUBREG_TO_REG instead of INSERT_SUBREG to model x86-64's implicit zero-extend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86196 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86ISelDAGToDAG.cpp | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp index 8e085bd7449..80cf3866ab8 100644 --- a/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -1949,14 +1949,12 @@ SDNode *X86DAGToDAGISel::Select(SDValue N) { 0); // We just did a 32-bit clear, insert it into a 64-bit register to // clear the whole 64-bit reg. - SDValue Undef = - SDValue(CurDAG->getMachineNode(TargetInstrInfo::IMPLICIT_DEF, - dl, MVT::i64), 0); + SDValue Zero = CurDAG->getTargetConstant(0, MVT::i64); SDValue SubRegNo = CurDAG->getTargetConstant(X86::SUBREG_32BIT, MVT::i32); ClrNode = - SDValue(CurDAG->getMachineNode(TargetInstrInfo::INSERT_SUBREG, dl, - MVT::i64, Undef, ClrNode, SubRegNo), + SDValue(CurDAG->getMachineNode(TargetInstrInfo::SUBREG_TO_REG, dl, + MVT::i64, Zero, ClrNode, SubRegNo), 0); } else { ClrNode = SDValue(CurDAG->getMachineNode(ClrOpcode, dl, NVT), 0);