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| author | Matthias Braun <matze@braunis.de> | 2015-11-24 20:06:56 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2015-11-24 20:06:56 +0000 |
| commit | 147110da842950a6df4b4f8c33f090f5d923d58d (patch) | |
| tree | 09fba2a480bc6577249b5564ca57435742b91408 /llvm/lib/CodeGen/LiveVariables.cpp | |
| parent | 130de7af7f41b561e9f63bf29b8d9628d3f86369 (diff) | |
| download | bcm5719-llvm-147110da842950a6df4b4f8c33f090f5d923d58d.tar.gz bcm5719-llvm-147110da842950a6df4b4f8c33f090f5d923d58d.zip | |
LiveVariables should not clobber MachineOperand::IsDead, ::IsKill on reserved physical registers
Patch by Nick Johnson <Nicholas.Paul.Johnson@deshawresearch.com>
Differential Revision: http://reviews.llvm.org/D14875
llvm-svn: 254012
Diffstat (limited to 'llvm/lib/CodeGen/LiveVariables.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LiveVariables.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/LiveVariables.cpp b/llvm/lib/CodeGen/LiveVariables.cpp index 007f4eb1ae3..06b86d82daf 100644 --- a/llvm/lib/CodeGen/LiveVariables.cpp +++ b/llvm/lib/CodeGen/LiveVariables.cpp @@ -522,11 +522,15 @@ void LiveVariables::runOnInstr(MachineInstr *MI, continue; unsigned MOReg = MO.getReg(); if (MO.isUse()) { - MO.setIsKill(false); + if (!(TargetRegisterInfo::isPhysicalRegister(MOReg) && + MRI->isReserved(MOReg))) + MO.setIsKill(false); if (MO.readsReg()) UseRegs.push_back(MOReg); } else /*MO.isDef()*/ { - MO.setIsDead(false); + if (!(TargetRegisterInfo::isPhysicalRegister(MOReg) && + MRI->isReserved(MOReg))) + MO.setIsDead(false); DefRegs.push_back(MOReg); } } |
