diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2010-03-06 01:14:19 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-03-06 01:14:19 +0000 |
| commit | 6cc1aeaad23b878fbf252efc3e45fb3a74a646eb (patch) | |
| tree | 6c05558fcb8747babce52442351b38e9f4e38519 /lib/CodeGen/MachineCSE.cpp | |
| parent | fc8ccfedbba651e324d827de6693aad1491314c7 (diff) | |
Don't update physical register def.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97861 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | lib/CodeGen/MachineCSE.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp index af35a7a3bb..b376e3d05f 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); |