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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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| .. | ||
| 2006-06-27-struct-ret.ll | ||
| 2007-02-07-FuncRename.ll | ||
| 2007-10-18-VarargsReturn.ll | ||
| 2007-12-20-ParamAttrs.ll | ||
| 2008-01-16-VarargsParamAttrs.ll | ||
| 2008-06-23-DeadAfterLive.ll | ||
| 2009-03-17-MRE-Invoke.ll | ||
| 2010-04-30-DbgInfo.ll | ||
| 2013-05-17-VarargsAndBlockAddress.ll | ||
| aggregates.ll | ||
| basictest.ll | ||
| canon.ll | ||
| dbginfo.ll | ||
| dead_vaargs.ll | ||
| deadexternal.ll | ||
| deadretval2.ll | ||
| deadretval.ll | ||
| keepalive.ll | ||
| linkage.ll | ||
| multdeadretval.ll | ||
| naked_functions.ll | ||
| operandbundle.ll | ||
| returned.ll | ||
| variadic_safety.ll | ||