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69b4df22e0
Summary: We hit undefined references building with ThinLTO when one source file contained explicit instantiations of a template method (weak_odr) but there were also implicit instantiations in another file (linkonce_odr), and the latter was the prevailing copy. In this case the symbol was marked hidden when the prevailing linkonce_odr copy was promoted to weak_odr. It led to unsats when the resulting shared library was linked with other code that contained a reference (expecting to be resolved due to the explicit instantiation). Add a CanAutoHide flag to the GV summary to allow the thin link to identify when all copies are eligible for auto-hiding (because they were all originally linkonce_odr global unnamed addr), and only do the auto-hide in that case. Most of the changes here are due to plumbing the new flag through the bitcode and llvm assembly, and resulting test changes. I augmented the existing auto-hide test to check for this situation. Reviewers: pcc Subscribers: mehdi_amini, inglorion, eraman, dexonsmith, arphaman, dang, llvm-commits, steven_wu, wmi Tags: #llvm Differential Revision: https://reviews.llvm.org/D59709 llvm-svn: 360466 |
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| .. | ||
| alias_import.ll | ||
| alias_internal.ll | ||
| alias_resolution.ll | ||
| autoupgrade.bc | ||
| cache-icall.ll | ||
| cache-import-lists1.ll | ||
| cache-import-lists2.ll | ||
| cache-typeid-resolutions1.ll | ||
| cache-typeid-resolutions2.ll | ||
| cache-typeid-resolutions3.ll | ||
| cache-typeid-resolutions-import.ll | ||
| cache.ll | ||
| callees-metadata.ll | ||
| cfi-distributed.ll | ||
| crash_debuginfo.ll | ||
| deadstrip.ll | ||
| debuginfo-compositetype-import.ll | ||
| debuginfo-cu-import.ll | ||
| diagnostic-handler-remarks.ll | ||
| dicompositetype-unique2.ll | ||
| dicompositetype-unique-alias.ll | ||
| dicompositetype-unique.ll | ||
| distributed_import.ll | ||
| distributed_indexes.ll | ||
| dot-dumper.ll | ||
| drop-debug-info.bc | ||
| drop-debug-info.ll | ||
| dsolocal_dllimport.ll | ||
| emit_imports2.ll | ||
| emit_imports.ll | ||
| empty_module_with_cache.ll | ||
| empty.ll | ||
| export.ll | ||
| funcimport2.ll | ||
| funcimport-debug.ll | ||
| funcimport-tbaa.ll | ||
| funcimport.ll | ||
| function_entry_count.ll | ||
| globals-import-blockaddr.ll | ||
| globals-import-cf-baz.ll | ||
| globals-import.ll | ||
| import_opaque_type.ll | ||
| index-const-prop-alias.ll | ||
| index-const-prop-cache-foo.ll | ||
| index-const-prop-cache-test1.ll | ||
| index-const-prop-cache-test2.ll | ||
| index-const-prop-comdat.ll | ||
| index-const-prop-define-g.ll | ||
| index-const-prop-full-lto.ll | ||
| index-const-prop-gvref.ll | ||
| index-const-prop-linkage.ll | ||
| index-const-prop.ll | ||
| lazyload_metadata.ll | ||
| linkonce_aliasee_ref_import.ll | ||
| linkonce_odr_unnamed_addr.ll | ||
| linkonce_resolution_comdat.ll | ||
| llvm.used.ll | ||
| local_name_conflict1.ll | ||
| local_name_conflict2.ll | ||
| local_name_conflict_var1.ll | ||
| local_name_conflict_var2.ll | ||
| merge-triple.ll | ||
| module_asm2.ll | ||
| module_asm.ll | ||
| noinline.ll | ||
| personality-local.ll | ||
| personality.ll | ||
| pr35472.ll | ||
| reference_non_importable.ll | ||
| referenced_by_constant.ll | ||
| section.ll | ||
| select_right_alias_definition1.ll | ||
| select_right_alias_definition2.ll | ||
| strong_non_prevailing.ll | ||
| thinlto-internalize-used2.ll | ||
| weak_resolution.ll | ||