diff options
Diffstat (limited to 'lib/CodeGen/MachineVerifier.cpp')
| -rw-r--r-- | lib/CodeGen/MachineVerifier.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineVerifier.cpp b/lib/CodeGen/MachineVerifier.cpp index 7a55852a13..8541d18ef3 100644 --- a/lib/CodeGen/MachineVerifier.cpp +++ b/lib/CodeGen/MachineVerifier.cpp @@ -686,6 +686,11 @@ MachineVerifier::visitMachineOperand(const MachineOperand *MO, unsigned MONum) { else addRegWithSubRegs(regsDefined, Reg); + // Verify SSA form. + if (MRI->isSSA() && TargetRegisterInfo::isVirtualRegister(Reg) && + llvm::next(MRI->def_begin(Reg)) != MRI->def_end()) + report("Multiple virtual register defs in SSA form", MO, MONum); + // Check LiveInts for a live range, but only for virtual registers. if (LiveInts && TargetRegisterInfo::isVirtualRegister(Reg) && !LiveInts->isNotInMIMap(MI)) { |