Update the LiveVariables analysis after the special handling for
unspillable terminators which was added in D91358. This is just enough
to fix some "Block should not be in AliveBlocks" / "Block missing from
AliveBlocks" errors in the codegen test suite when machine verification
is forced to run after PHIElimination (currently it is disabled).
Differential Revision: https://reviews.llvm.org/D110939
assert(MRI->use_empty(SrcReg) &&
"Expected a single use from UnspillableTerminator");
SrcRegDef->getOperand(0).setReg(IncomingReg);
+
+ // Update LiveVariables.
+ if (LV) {
+ LiveVariables::VarInfo &SrcVI = LV->getVarInfo(SrcReg);
+ LiveVariables::VarInfo &IncomingVI = LV->getVarInfo(IncomingReg);
+ IncomingVI.AliveBlocks = std::move(SrcVI.AliveBlocks);
+ SrcVI.AliveBlocks.clear();
+ }
+
continue;
}