Adrian Prantl 4eeaa0da04 [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. ... 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		2016-04-15 15:57:41 +00:00
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address-spaces.ll
alignment.ll
basictest.ll	[SROA] Fix PR25873, which Andrea Di Biagio analyzed the daylights out	2016-03-10 15:31:17 +00:00
big-endian.ll
dbg-single-piece.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
fca.ll
phi-and-select.ll
ppcf128-no-fold.ll
pr26972.ll	Have DataLayout::isLegalInteger() accept uint64_t	2016-03-18 23:19:29 +00:00
slice-order-independence.ll
slice-width.ll
vector-conversion.ll
vector-lifetime-intrinsic.ll
vector-promotion.ll
vectors-of-pointers.ll