[DebugInfo][LICM] Debug value info loss caused by removing dead instructions without salvaging

Removing the dead instruction without salvaging the debug value info in hoistGEP:

Line 2543 in 393c783

eraseInstruction(*Src, SafetyInfo, MSSAU);

Code example: https://godbolt.org/z/b3331YxE8

Removing the dead instruction without salvaging the debug value info in hoistAdd:

Line 2597 in 393c783

eraseInstruction(cast<Instruction>(*VariantLHS), SafetyInfo, MSSAU);

Code example: https://godbolt.org/z/TbjdP5Y1d

Removing the dead instruction without salvaging the debug value info in hoistSub:

Line 2675 in 393c783

eraseInstruction(cast<Instruction>(*VariantLHS), SafetyInfo, MSSAU);

Code example: https://godbolt.org/z/h3veE8fj9

Removing the dead instruction without salvaging the debug value info in hoistBOAssociation:

Lines 2882 to 2883 in 393c783

    
           if (BO0->use_empty()) 
        
             eraseInstruction(*BO0, SafetyInfo, MSSAU);

Code example: https://godbolt.org/z/9nE7Tob6E

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	if (BO0->use_empty())
	eraseInstruction(*BO0, SafetyInfo, MSSAU);