llvm-mirror/test/CodeGen/WinEH
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
..
lit.local.cfg
wineh-asm.ll [WinEH] Don't remove unannotated inline-asm calls 2016-02-26 00:04:25 +00:00
wineh-cloning.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
wineh-demotion.ll Revert r258580 and r258581. 2016-02-01 03:29:38 +00:00
wineh-intrinsics-invalid.ll [WinEH] Add llvm.eh.exceptionpointer intrinsic 2015-09-03 09:15:32 +00:00
wineh-intrinsics.ll [IR] Reformulate LLVM's EH funclet IR 2015-12-12 05:38:55 +00:00
wineh-nested-unwind.ll [WinEH] Visit 'unwind to caller' catchswitches nested in catchswitches 2016-02-23 07:18:15 +00:00
wineh-no-demotion.ll Revert r258580 and r258581. 2016-02-01 03:29:38 +00:00
wineh-noret-cleanup.ll [WinEH] Prevent EH state numbering from skipping nested cleanup pads that never return 2016-02-12 21:10:16 +00:00
wineh-setjmp.ll [WinEH] Make setjmp work correctly with EH 2016-02-29 19:16:03 +00:00
wineh-statenumbering-cleanups.ll [WinEH] Don't perform state stores in cleanups 2016-01-29 05:33:15 +00:00
wineh-statenumbering.ll [WinEH] Optimize WinEH state stores 2016-02-17 18:37:11 +00:00