diff options
Diffstat (limited to 'lib/CodeGen/MachineVerifier.cpp')
| -rw-r--r-- | lib/CodeGen/MachineVerifier.cpp | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/lib/CodeGen/MachineVerifier.cpp b/lib/CodeGen/MachineVerifier.cpp index 51e3b698a2..68688cacab 100644 --- a/lib/CodeGen/MachineVerifier.cpp +++ b/lib/CodeGen/MachineVerifier.cpp @@ -589,7 +589,7 @@ MachineVerifier::visitMachineOperand(const MachineOperand *MO, unsigned MONum) { unsigned DefReg = MI->getOperand(defIdx).getReg(); if (Reg == DefReg) { isKill = true; - // ANd in that case an explicit kill flag is not allowed. + // And in that case an explicit kill flag is not allowed. if (MO->isKill()) report("Illegal kill flag on two-address instruction operand", MO, MONum); @@ -622,7 +622,18 @@ MachineVerifier::visitMachineOperand(const MachineOperand *MO, unsigned MONum) { report("No live range at use", MO, MONum); *OS << UseIdx << " is not live in " << LI << '\n'; } - // TODO: Verify isKill == LI.killedAt. + // Verify isKill == LI.killedAt. + if (!MI->isRegTiedToDefOperand(MONum)) { + bool liKill = LI.killedAt(UseIdx.getDefIndex()); + if (isKill && !liKill) { + report("Live range continues after kill flag", MO, MONum); + *OS << "Live range: " << LI << '\n'; + } + if (!isKill && liKill) { + report("Live range ends without kill flag", MO, MONum); + *OS << "Live range: " << LI << '\n'; + } + } } else { report("Virtual register has no Live interval", MO, MONum); } |