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| author | Yonghong Song <yhs@fb.com> | 2021-07-19 09:11:10 -0700 |
|---|---|---|
| committer | Yonghong Song <yhs@fb.com> | 2021-08-26 14:18:30 -0700 |
| commit | 1bebc31c617d1a0773f1d561f02dd17c5e83b23b (patch) | |
| tree | c97eaff78d0fe1c3d096b61e88fa653ff7bb7195 /llvm/lib/Bitcode | |
| parent | 73093599287cc6d546ac46652ee781789d7de61f (diff) | |
| download | llvm-1bebc31c617d1a0773f1d561f02dd17c5e83b23b.zip llvm-1bebc31c617d1a0773f1d561f02dd17c5e83b23b.tar.gz llvm-1bebc31c617d1a0773f1d561f02dd17c5e83b23b.tar.bz2 | |
[DebugInfo] generate btf_tag annotations for func parameters
Generate btf_tag annotations for function parameters.
A field "annotations" is introduced to DILocalVariable, and
annotations are represented as an DINodeArray, similar to
DIComposite elements. The following example illustrates how
annotations are encoded in IR:
distinct !DILocalVariable(name: "info",, arg: 1, ..., annotations: !10)
!10 = !{!11, !12}
!11 = !{!"btf_tag", !"a"}
!12 = !{!"btf_tag", !"b"}
Differential Revision: https://reviews.llvm.org/D106620
Diffstat (limited to 'llvm/lib/Bitcode')
| -rw-r--r-- | llvm/lib/Bitcode/Reader/MetadataLoader.cpp | 11 | ||||
| -rw-r--r-- | llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | 1 |
2 files changed, 9 insertions, 3 deletions
diff --git a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp index 3fc0919..9ac6358 100644 --- a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp +++ b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp @@ -1961,18 +1961,23 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata( bool HasTag = !HasAlignment && Record.size() > 8; DINode::DIFlags Flags = static_cast<DINode::DIFlags>(Record[7 + HasTag]); uint32_t AlignInBits = 0; + Metadata *Annotations = nullptr; if (HasAlignment) { - if (Record[8 + HasTag] > (uint64_t)std::numeric_limits<uint32_t>::max()) + if (Record[8] > (uint64_t)std::numeric_limits<uint32_t>::max()) return error("Alignment value is too large"); - AlignInBits = Record[8 + HasTag]; + AlignInBits = Record[8]; + if (Record.size() > 9) + Annotations = getMDOrNull(Record[9]); } + MetadataList.assignValue( GET_OR_DISTINCT(DILocalVariable, (Context, getMDOrNull(Record[1 + HasTag]), getMDString(Record[2 + HasTag]), getMDOrNull(Record[3 + HasTag]), Record[4 + HasTag], getDITypeRefOrNull(Record[5 + HasTag]), - Record[6 + HasTag], Flags, AlignInBits)), + Record[6 + HasTag], Flags, AlignInBits, + Annotations)), NextMetadataNo); NextMetadataNo++; break; diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp index d012733..a7061c6 100644 --- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -1994,6 +1994,7 @@ void ModuleBitcodeWriter::writeDILocalVariable( Record.push_back(N->getArg()); Record.push_back(N->getFlags()); Record.push_back(N->getAlignInBits()); + Record.push_back(VE.getMetadataOrNullID(N->getAnnotations().get())); Stream.EmitRecord(bitc::METADATA_LOCAL_VAR, Record, Abbrev); Record.clear(); |