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Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446 |
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| .. | ||
| 2003-04-25-AssertFail.ll | ||
| 2003-05-12-PreheaderExitOfChild.ll | ||
| 2003-08-15-PreheadersFail.ll | ||
| 2003-12-10-ExitBlocksProblem.ll | ||
| 2004-02-05-DominatorInfoCorruption.ll | ||
| 2004-03-15-IncorrectDomUpdate.ll | ||
| 2004-04-01-IncorrectDomUpdate.ll | ||
| 2004-04-12-LoopSimplify-SwitchBackedges.ll | ||
| 2004-04-13-LoopSimplifyUpdateDomFrontier.ll | ||
| 2007-10-28-InvokeCrash.ll | ||
| 2010-07-15-IncorrectDomFrontierUpdate.ll | ||
| 2010-12-26-PHIInfiniteLoop.ll | ||
| 2011-12-14-LandingpadHeader.ll | ||
| 2012-03-20-indirectbr.ll | ||
| ashr-crash.ll | ||
| basictest.ll | ||
| dbg-loc.ll | ||
| dup-preds.ll | ||
| hardertest.ll | ||
| indirectbr-backedge.ll | ||
| indirectbr.ll | ||
| merge-exits.ll | ||
| notify-scev.ll | ||
| phi-node-simplify.ll | ||
| preserve-scev.ll | ||
| single-backedge.ll | ||
| unreachable-loop-pred.ll | ||