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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basic32iters.ll	[PATCH] Force LoopReroll to reset the loop trip count value after reroll.	2016-03-22 13:50:57 +00:00
basic.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
negative.ll	Handle loop with negtive induction variable increment	2015-07-24 22:01:49 +00:00
nonconst_lb.ll	[LPM] Factor all of the loop analysis usage updates into a common helper	2016-02-19 10:45:18 +00:00
ptrindvar.ll	Enable loopreroll to rerool loop with pointer induction variable.	2016-01-25 19:43:45 +00:00
reduction.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
reroll_with_dbg.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00