diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/Hexagon/RDFCopy.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/Target/Hexagon/RDFCopy.cpp b/llvm/lib/Target/Hexagon/RDFCopy.cpp index f8c766ac972..212f75c746c 100644 --- a/llvm/lib/Target/Hexagon/RDFCopy.cpp +++ b/llvm/lib/Target/Hexagon/RDFCopy.cpp @@ -18,6 +18,7 @@ #include "llvm/CodeGen/MachineDominators.h" #include "llvm/CodeGen/MachineInstr.h" #include "llvm/CodeGen/MachineOperand.h" +#include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/CodeGen/TargetOpcodes.h" #include "llvm/CodeGen/TargetRegisterInfo.h" #include "llvm/MC/MCRegisterInfo.h" @@ -100,10 +101,11 @@ NodeId CopyPropagation::getLocalReachingDef(RegisterRef RefRR, bool CopyPropagation::run() { scanBlock(&DFG.getMF().front()); + MachineRegisterInfo &MRI = DFG.getMF().getRegInfo(); if (trace()) { dbgs() << "Copies:\n"; - for (auto I : Copies) { + for (NodeId I : Copies) { dbgs() << "Instr: " << *DFG.addr<StmtNode*>(I).Addr->getCode(); dbgs() << " eq: {"; for (auto J : CopyMap[I]) @@ -130,7 +132,7 @@ bool CopyPropagation::run() { return 0; }; - for (auto C : Copies) { + for (NodeId C : Copies) { #ifndef NDEBUG if (HasLimit && CpCount >= CpLimit) break; @@ -179,6 +181,8 @@ bool CopyPropagation::run() { unsigned NewReg = MinPhysReg(SR); Op.setReg(NewReg); Op.setSubReg(0); + if (MRI.isReserved(NewReg)) + Op.setIsRenamable(false); DFG.unlinkUse(UA, false); if (AtCopy != 0) { UA.Addr->linkToDef(UA.Id, DFG.addr<DefNode*>(AtCopy)); |
