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author | Chris Lattner <sabre@nondot.org> | 2010-02-12 20:49:41 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2010-02-12 20:49:41 +0000 |
commit | fdfeb6976f07ad10d809b922ed7376ba2a3539be (patch) | |
tree | f6ba4446fc9db081e5e3386c57d2db253774c1fa /lib/Bitcode | |
parent | b3e1bf54b29354c6d332cfaffcc86cd776fd4ca8 (diff) | |
download | external_llvm-fdfeb6976f07ad10d809b922ed7376ba2a3539be.zip external_llvm-fdfeb6976f07ad10d809b922ed7376ba2a3539be.tar.gz external_llvm-fdfeb6976f07ad10d809b922ed7376ba2a3539be.tar.bz2 |
Add support for a union type in LLVM IR. Patch by Talin!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96011 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Bitcode')
-rw-r--r-- | lib/Bitcode/Reader/BitcodeReader.cpp | 7 | ||||
-rw-r--r-- | lib/Bitcode/Writer/BitcodeWriter.cpp | 21 |
2 files changed, 27 insertions, 1 deletions
diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp index 4dfc6ce..a0402ca 100644 --- a/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/lib/Bitcode/Reader/BitcodeReader.cpp @@ -585,6 +585,13 @@ bool BitcodeReader::ParseTypeTable() { ResultTy = StructType::get(Context, EltTys, Record[0]); break; } + case bitc::TYPE_CODE_UNION: { // UNION: [eltty x N] + SmallVector<const Type*, 8> EltTys; + for (unsigned i = 0, e = Record.size(); i != e; ++i) + EltTys.push_back(getTypeByID(Record[i], true)); + ResultTy = UnionType::get(&EltTys[0], EltTys.size()); + break; + } case bitc::TYPE_CODE_ARRAY: // ARRAY: [numelts, eltty] if (Record.size() < 2) return Error("Invalid ARRAY type record"); diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp index ec081d5..82e73b5 100644 --- a/lib/Bitcode/Writer/BitcodeWriter.cpp +++ b/lib/Bitcode/Writer/BitcodeWriter.cpp @@ -181,6 +181,14 @@ static void WriteTypeTable(const ValueEnumerator &VE, BitstreamWriter &Stream) { Log2_32_Ceil(VE.getTypes().size()+1))); unsigned StructAbbrev = Stream.EmitAbbrev(Abbv); + // Abbrev for TYPE_CODE_UNION. + Abbv = new BitCodeAbbrev(); + Abbv->Add(BitCodeAbbrevOp(bitc::TYPE_CODE_UNION)); + Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); + Abbv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, + Log2_32_Ceil(VE.getTypes().size()+1))); + unsigned UnionAbbrev = Stream.EmitAbbrev(Abbv); + // Abbrev for TYPE_CODE_ARRAY. Abbv = new BitCodeAbbrev(); Abbv->Add(BitCodeAbbrevOp(bitc::TYPE_CODE_ARRAY)); @@ -250,6 +258,17 @@ static void WriteTypeTable(const ValueEnumerator &VE, BitstreamWriter &Stream) { AbbrevToUse = StructAbbrev; break; } + case Type::UnionTyID: { + const UnionType *UT = cast<UnionType>(T); + // UNION: [eltty x N] + Code = bitc::TYPE_CODE_UNION; + // Output all of the element types. + for (UnionType::element_iterator I = UT->element_begin(), + E = UT->element_end(); I != E; ++I) + TypeVals.push_back(VE.getTypeID(*I)); + AbbrevToUse = UnionAbbrev; + break; + } case Type::ArrayTyID: { const ArrayType *AT = cast<ArrayType>(T); // ARRAY: [numelts, eltty] @@ -789,7 +808,7 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal, else if (isCStr7) AbbrevToUse = CString7Abbrev; } else if (isa<ConstantArray>(C) || isa<ConstantStruct>(V) || - isa<ConstantVector>(V)) { + isa<ConstantUnion>(C) || isa<ConstantVector>(V)) { Code = bitc::CST_CODE_AGGREGATE; for (unsigned i = 0, e = C->getNumOperands(); i != e; ++i) Record.push_back(VE.getValueID(C->getOperand(i))); |