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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 |
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| .. | ||
| 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 | ||
| 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 | ||
| alias-set-tracker-loss.ll | ||
| AliasSetMemSet.ll | ||
| argmemonly-call.ll | ||
| atomics.ll | ||
| basictest.ll | ||
| constexpr.ll | ||
| crash.ll | ||
| debug-value.ll | ||
| extra-copies.ll | ||
| funclet.ll | ||
| hoist-bitcast-load.ll | ||
| hoist-deref-load.ll | ||
| hoist-invariant-load.ll | ||
| hoist-round.ll | ||
| hoisting.ll | ||
| lcssa-ssa-promoter.ll | ||
| no-preheader-test.ll | ||
| pr23608.ll | ||
| pr26843.ll | ||
| pr27262.ll | ||
| PR19798.ll | ||
| PR21582.ll | ||
| PR24013.ll | ||
| preheader-safe.ll | ||
| Preserve-LCSSA.ll | ||
| promote-order.ll | ||
| promote-tls.ll | ||
| scalar_promote.ll | ||
| scalar-promote-memmodel.ll | ||
| sinking.ll | ||
| speculate.ll | ||
| volatile-alias.ll | ||