From aad3d578da0ddf6d0d3d95e5e09a32e47f6dfeb8 Mon Sep 17 00:00:00 2001 From: LemonBoy Date: Sat, 18 Apr 2020 11:31:38 -0700 Subject: [DebugInfo] Change DIEnumerator payload type from int64_t to APInt This allows the representation of arbitrarily large enumeration values. See https://lists.llvm.org/pipermail/llvm-dev/2017-December/119475.html for context. Reviewed By: andrewrk, aprantl, MaskRay Differential Revision: https://reviews.llvm.org/D62475 --- llvm/lib/Bitcode/Reader/MetadataLoader.cpp | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'llvm/lib/Bitcode/Reader/MetadataLoader.cpp') diff --git a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp index c1fa91d..6ec4416 100644 --- a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp +++ b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp @@ -1277,14 +1277,24 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata( break; } case bitc::METADATA_ENUMERATOR: { - if (Record.size() != 3) + if (Record.size() < 3) return error("Invalid record"); IsDistinct = Record[0] & 1; bool IsUnsigned = Record[0] & 2; + bool IsBigInt = Record[0] & 4; + APInt Value; + + if (IsBigInt) { + const uint64_t BitWidth = Record[1]; + const size_t NumWords = Record.size() - 3; + Value = readWideAPInt(makeArrayRef(&Record[3], NumWords), BitWidth); + } else + Value = APInt(64, unrotateSign(Record[1]), !IsUnsigned); + MetadataList.assignValue( - GET_OR_DISTINCT(DIEnumerator, (Context, unrotateSign(Record[1]), - IsUnsigned, getMDString(Record[2]))), + GET_OR_DISTINCT(DIEnumerator, + (Context, Value, IsUnsigned, getMDString(Record[2]))), NextMetadataNo); NextMetadataNo++; break; -- cgit v1.1