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);
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)) {
+ // MI could kill register without a kill flag on MO.
+ bool miKill = MI->killsRegister(Reg);
+ bool liKill = LI.killedAt(UseIdx.getDefIndex());
+ if (miKill && !liKill) {
+ report("Live range continues after kill flag", MO, MONum);
+ *OS << "Live range: " << LI << '\n';
+ }
+ if (!miKill && 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);
}