search for: prologueepilgueinserter

> From: aprantl at apple.com <aprantl at apple.com> > Since it sounds like the problem is only with implicit descriptions, would a rule > such as "if the expression has a DW_OP_stack_value, add an extra > DW_OP_deref" work for the PrologueEpilgueInserter or do we need > something more principled? Right, that could very well be sufficient for this particular case so I will experiment with that. In general though and for the future it seems that it would be of benefit to have additional metadata in the expressions indicating if they describe e.g....

Hello, Could someone explain to me what the rules are for concatenation of DWARF location expressions? For example in lib/CodeGen/PrologEpilogInserter.cpp there is a call to DIExpression::prepend to concatenate the stack slot address of a variable to an existing expression. Now the problem here is that the former is a 'Memory location description' while the latter could very well be a