[DebugInfo] Implement killOperand#89005
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Rather than having two ways of storing an op_deref (prependDeref bit, or start of DIExpr), always use the prependDeref bit when creating a debug_value instruction. The stored DIExpr should only have fragments.
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This function drops debug_value operands by making them undef, rather than deleting them.
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Moved to be part of #89412 |
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Based on #89422
Add killOperand function to clear DebugValueInst operand. This function should be used in passes where the value cannot be salvaged.
Calls to this function should ideally be added:
Calls to this function should not be added: