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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> llvm-svn: 266446 |
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| .. | ||
| allocas.ll | ||
| apelim.ll | ||
| basic.ll | ||
| cfg-hazards.ll | ||
| comdat-ipo.ll | ||
| contract-end-of-use-list.ll | ||
| contract-marker.ll | ||
| contract-storestrong-ivar.ll | ||
| contract-storestrong.ll | ||
| contract-testcases.ll | ||
| contract.ll | ||
| empty-block.ll | ||
| ensure-that-exception-unwind-path-is-visited.ll | ||
| escape.ll | ||
| expand.ll | ||
| gvn.ll | ||
| intrinsic-use-isolated.ll | ||
| intrinsic-use.ll | ||
| invoke.ll | ||
| move-and-form-retain-autorelease.ll | ||
| move-and-merge-autorelease.ll | ||
| nested.ll | ||
| path-overflow.ll | ||
| pointer-types.ll | ||
| post-inlining.ll | ||
| pr12270.ll | ||
| provenance.ll | ||
| retain-block-side-effects.ll | ||
| retain-not-declared.ll | ||
| rle-s2l.ll | ||
| rv.ll | ||
| split-backedge.ll | ||
| tail-call-invariant-enforcement.ll | ||
| unsafe-claim-rv.ll | ||
| weak-contract.ll | ||
| weak-copies.ll | ||
| weak-dce.ll | ||
| weak.ll | ||