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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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| .. | ||
| 2002-01-31-UseStuckAround.ll | ||
| 2002-05-22-PHITest.ll | ||
| 2002-05-23-ZeroArgPHITest.ll | ||
| 2002-05-28-Crash-distilled.ll | ||
| 2002-05-28-Crash.ll | ||
| 2002-07-17-AssertionFailure.ll | ||
| 2002-07-17-PHIAssertion.ll | ||
| 2002-07-29-Segfault.ll | ||
| 2003-01-22-PredecessorProblem.ll | ||
| 2003-04-25-PHIPostDominateProblem.ll | ||
| 2003-06-11-InvalidCFG.ll | ||
| 2003-06-24-BadSuccessor.ll | ||
| 2003-06-24-BasicFunctionality.ll | ||
| 2003-09-10-UnwindInstFail.ll | ||
| 2003-09-15-InfLoopCrash.ll | ||
| 2003-11-16-MissingPostDominanceInfo.ll | ||
| 2004-05-04-UnreachableBlock.ll | ||
| 2005-02-17-PHI-Invoke-Crash.ll | ||
| basictest1.ll | ||
| basictest2.ll | ||
| basictest.ll | ||
| dce_pure_call.ll | ||
| dce_pure_invoke.ll | ||
| debug-info-intrinsic.ll | ||
| delete-profiling-calls-to-constant.ll | ||
| unreachable-function.ll | ||