Adrian Prantl fb3abba237 [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> llvm-svn: 266446		2016-04-15 15:57:41 +00:00
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Inputs
abilist.ll
args-unreachable-bb.ll
arith.ll
call.ll	[DFSan] Remove an overly aggressive assert reported in PR26068.	2016-03-07 14:05:09 +00:00
debug-nonzero-labels.ll
debug.ll	[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.	2016-04-15 15:57:41 +00:00
external_mask.ll	[sanitizer] [dfsan] Unify aarch64 mapping	2015-11-27 12:42:39 +00:00
load.ll
memset.ll	Revert "Change memcpy/memset/memmove to have dest and source alignments."	2015-11-19 05:56:52 +00:00
prefix-rename.ll
store.ll
union-large.ll
union.ll