diff options
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp index 8a00d54..1e6d5f0 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp @@ -297,13 +297,14 @@ static MachineInstr *MoveAndTeeForMultiUse( unsigned NewReg = MRI.createVirtualRegister(RegClass); unsigned TeeReg = MRI.createVirtualRegister(RegClass); unsigned DefReg = MRI.createVirtualRegister(RegClass); + MachineOperand &DefMO = Def->getOperand(0); MRI.replaceRegWith(Reg, NewReg); MachineInstr *Tee = BuildMI(MBB, Insert, Insert->getDebugLoc(), TII->get(GetTeeLocalOpcode(RegClass)), TeeReg) .addReg(NewReg, RegState::Define) - .addReg(DefReg); + .addReg(DefReg, getUndefRegState(DefMO.isDead())); Op.setReg(TeeReg); - Def->getOperand(0).setReg(DefReg); + DefMO.setReg(DefReg); LIS.InsertMachineInstrInMaps(*Tee); LIS.removeInterval(Reg); LIS.createAndComputeVirtRegInterval(NewReg); |