Hi, On Tue, 11 Sep 2012, Dehao Chen wrote:
> Looks like we have two choices: > > 1. Stream out block info, and use LTO_SET_PREVAIL for TREE_CHAIN(t) This will actually not work correctly in some cases. The problem is, if the prevailing decl is already part of another chain (say in another block_var list) you would break the current chain. Hence block vars need special handling in the lto streamer (another reason why tree_chain is not the most clever think to use for this chain). This problem area needs to be solved somehow if block info is to be preserved correctly. > 2. Don't stream out block info for LTO, and still call LTO_NO_PREVAIL > (TREE_CHAIN (t)). That's also a large hammer as it basically will mean no debug info after LTO :-/ Sigh, at this point I have no good solution that doesn't involve quite some work, perhaps your hack is good enough for the time being, though I hate it :) Ciao, Michael.
