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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> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266446 91177308-0d34-0410-b5e6-96231b3b80d8 |
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| .. | ||
| 2002-03-28-UninitializedVal.ll | ||
| 2002-05-01-ShouldNotPromoteThisAlloca.ll | ||
| 2003-04-10-DFNotFound.ll | ||
| 2003-04-18-DeadBlockProblem.ll | ||
| 2003-04-24-MultipleIdenticalSuccessors.ll | ||
| 2003-06-26-IterativePromote.ll | ||
| 2003-10-05-DeadPHIInsertion.ll | ||
| 2005-06-30-ReadBeforeWrite.ll | ||
| 2005-11-28-Crash.ll | ||
| 2007-08-27-VolatileLoadsStores.ll | ||
| atomic.ll | ||
| ConvertDebugInfo2.ll | ||
| ConvertDebugInfo.ll | ||
| crash.ll | ||
| ignore-lifetime.ll | ||
| optnone.ll | ||
| pr24179.ll | ||
| PromoteMemToRegister.ll | ||
| UndefValuesMerge.ll | ||