diff options
| author | Yonghong Song <yhs@fb.com> | 2021-07-19 00:12:15 -0700 |
|---|---|---|
| committer | Yonghong Song <yhs@fb.com> | 2021-08-20 12:06:37 -0700 |
| commit | 430e22388173c96da6777fccb9735a6e8ee3ea1c (patch) | |
| tree | 15010909dfcc7cff9ac17e8a1be2ca5478ea78a5 /llvm/lib/Bitcode/Reader/MetadataLoader.cpp | |
| parent | 5425106e493e26f7e0a87077c8eca657a9aff293 (diff) | |
[DebugInfo] generate btf_tag annotations for DIDerived types
Generate btf_tag annotations for DIDrived types. More specifically,
clang frontend generates the btf_tag annotations for record
fields. The annotations are represented as an DINodeArray
in DebugInfo. The following example illustrate how
annotations are encoded in IR:
distinct !DIDerivedType(tag: DW_TAG_member, ..., annotations: !10)
!10 = !{!11, !12}
!11 = !{!"btf_tag", !"a"}
!12 = !{!"btf_tag", !"b"}
Differential Revision: https://reviews.llvm.org/D106616
Diffstat (limited to 'llvm/lib/Bitcode/Reader/MetadataLoader.cpp')
| -rw-r--r-- | llvm/lib/Bitcode/Reader/MetadataLoader.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp index da6010e1c640..3343efdaeb9a 100644 --- a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp +++ b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp @@ -1437,7 +1437,7 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata( break; } case bitc::METADATA_DERIVED_TYPE: { - if (Record.size() < 12 || Record.size() > 13) + if (Record.size() < 12 || Record.size() > 14) return error("Invalid record"); // DWARF address space is encoded as N->getDWARFAddressSpace() + 1. 0 means @@ -1446,6 +1446,10 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata( if (Record.size() > 12 && Record[12]) DWARFAddressSpace = Record[12] - 1; + Metadata *Annotations = nullptr; + if (Record.size() > 13 && Record[13]) + Annotations = getMDOrNull(Record[13]); + IsDistinct = Record[0]; DINode::DIFlags Flags = static_cast<DINode::DIFlags>(Record[10]); MetadataList.assignValue( @@ -1455,7 +1459,7 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata( getDITypeRefOrNull(Record[5]), getDITypeRefOrNull(Record[6]), Record[7], Record[8], Record[9], DWARFAddressSpace, Flags, - getDITypeRefOrNull(Record[11]))), + getDITypeRefOrNull(Record[11]), Annotations)), NextMetadataNo); NextMetadataNo++; break; |