llvm-project/llvm/test/Transforms/LICM
Adrian Prantl 75819aedf6 [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
..
2003-02-26-LoopExitNotDominated.ll
2003-02-27-NestedLoopExitBlocks.ll
2003-02-27-PreheaderExitNodeUpdate.ll
2003-02-27-PreheaderProblem.ll
2003-02-27-StoreSinkPHIs.ll
2003-02-28-PromoteDifferentType.ll
2003-05-02-LoadHoist.ll
2003-12-11-SinkingToPHI.ll
2004-09-14-AliasAnalysisInvalidate.ll [PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible 2015-09-09 17:55:00 +00:00
2004-11-17-UndefIndexCrash.ll
2006-09-12-DeadUserOfSunkInstr.ll
2007-05-22-VolatileSink.ll
2007-07-30-AliasSet.ll
2007-09-17-PromoteValue.ll
2007-09-24-PromoteNullValue.ll
2007-10-01-PromoteSafeValue.ll
2008-05-20-AliasSetVAArg.ll
2008-07-22-LoadGlobalConstant.ll
2009-12-10-LICM-Indbr-Crash.ll
2011-04-06-HoistMissedASTUpdate.ll
2011-04-06-PromoteResultOfPromotion.ll
2011-04-09-RAUW-AST.ll
2011-07-06-Alignment.ll
2014-09-10-doFinalizationAssert.ll
AliasSetMemSet.ll [AliasSetTracker] Teach AliasSetTracker about MemSetInst 2016-02-17 02:01:50 +00:00
PR19798.ll
PR21582.ll
PR24013.ll
Preserve-LCSSA.ll
alias-set-tracker-loss.ll [LICM] Teach LICM how to handle cases where the alias set tracker was 2016-02-27 04:34:07 +00:00
argmemonly-call.ll [LICM] Hoist calls to readonly argmemonly functions even with stores in the loop 2015-09-21 22:27:59 +00:00
atomics.ll
basictest.ll
constexpr.ll
crash.ll
debug-value.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
extra-copies.ll
funclet.ll [LICM] Fix a small oversight introduced in r256763 2016-01-04 23:16:22 +00:00
hoist-bitcast-load.ll
hoist-deref-load.ll [LICM] Keep metadata on control equivalent hoists 2016-01-28 15:51:58 +00:00
hoist-invariant-load.ll [PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible 2015-09-09 17:55:00 +00:00
hoist-round.ll Mark some FP intrinsics as safe to speculatively execute 2016-04-03 12:30:46 +00:00
hoisting.ll
lcssa-ssa-promoter.ll
no-preheader-test.ll
pr23608.ll Fix CHECK directives that weren't checking. 2015-08-31 21:10:35 +00:00
pr26843.ll [AliasSetTracker] Do not strip pointer casts when processing MemSetInst 2016-03-14 18:34:29 +00:00
pr27262.ll [AliasSetTracker] Correctly handle changing the size of an entry 2016-04-14 22:00:11 +00:00
preheader-safe.ll
promote-order.ll
promote-tls.ll [LICM] Store promotion when memory is thread local 2016-03-09 22:59:30 +00:00
scalar-promote-memmodel.ll
scalar_promote.ll
sinking.ll [LICM] Make instruction sinking funclet-aware 2016-01-04 03:37:39 +00:00
speculate.ll
volatile-alias.ll