[DebugInfo][SCCPSolver] Missing debug location updates

[svs-quic]

The functions replaceSignedInst() and removeNonFeasibleEdges() do not propagate the debug locations to the newly created instructions.

// Wire up the new instruction and update state.
assert(NewInst && "Expected replacement instruction");
NewInst->takeName(&Inst);
InsertedValues.insert(NewInst);
Inst.replaceAllUsesWith(NewInst);
Solver.removeLatticeValueFor(&Inst);
Inst.eraseFromParent();

BranchInst::Create(OnlyFeasibleSuccessor, BB);
TI->eraseFromParent();

[llvmbot]

@llvm/issue-subscribers-debuginfo

Author: Sudharsan Veeravalli (svs-quic)

The functions replaceSignedInst() and removeNonFeasibleEdges() do not propagate the debug locations to the newly created instructions.

// Wire up the new instruction and update state.
assert(NewInst && "Expected replacement instruction");
NewInst->takeName(&Inst);
InsertedValues.insert(NewInst);
Inst.replaceAllUsesWith(NewInst);
Solver.removeLatticeValueFor(&Inst);
Inst.eraseFromParent();

BranchInst::Create(OnlyFeasibleSuccessor, BB);
TI->eraseFromParent();