From: Evan Cheng Date: Sat, 6 Mar 2010 01:14:19 +0000 (+0000) Subject: Don't update physical register def. X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6cc1aeaad23b878fbf252efc3e45fb3a74a646eb;p=oota-llvm.git Don't update physical register def. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97861 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp index af35a7a3bb3..b376e3d05fe 100644 --- a/lib/CodeGen/MachineCSE.cpp +++ b/lib/CodeGen/MachineCSE.cpp @@ -238,8 +238,9 @@ bool MachineCSE::ProcessBlock(MachineDomTreeNode *Node) { continue; unsigned OldReg = MO.getReg(); unsigned NewReg = CSMI->getOperand(i).getReg(); - assert(OldReg != NewReg && - TargetRegisterInfo::isVirtualRegister(OldReg) && + if (OldReg == NewReg) + continue; + assert(TargetRegisterInfo::isVirtualRegister(OldReg) && TargetRegisterInfo::isVirtualRegister(NewReg) && "Do not CSE physical register defs!"); MRI->replaceRegWith(OldReg, NewReg);