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AsmWriter/Bitcode: MDBasicType

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229005 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2015-02-13 01:14:58 +00:00
parent aa7c94359c
commit 57b4c150ca
8 changed files with 73 additions and 11 deletions
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3
include/llvm/Bitcode/LLVMBitCodes.h
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@ -149,7 +149,8 @@ namespace bitc {
METADATA_ATTACHMENT = 11, // [m x [value, [n x [id, mdnode]]]
METADATA_GENERIC_DEBUG = 12, // [distinct, tag, vers, header, n x md num]
METADATA_SUBRANGE = 13, // [distinct, count, lo]
METADATA_ENUMERATOR = 14 // [distinct, value, name?]
METADATA_ENUMERATOR = 14, // [distinct, value, name?]
METADATA_BASIC_TYPE = 15 // [distinct, tag, name, size, align, enc]
};
// The constants block (CONSTANTS_BLOCK_ID) describes emission for each

2
include/llvm/IR/DebugInfoMetadata.h
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@ -381,6 +381,8 @@ public:
Metadata *getScope() const { return getOperand(1); }
StringRef getName() const { return getStringOperand(2); }
MDString *getRawName() const { return getOperandAs<MDString>(2); }
static bool classof(const Metadata *MD) {
switch (MD->getMetadataID()) {
default:

16
lib/AsmParser/LLParser.cpp
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@ -3194,9 +3194,23 @@ bool LLParser::ParseMDEnumerator(MDNode *&Result, bool IsDistinct) {
return false;
}
/// ParseMDBasicType:
/// ::= !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
bool LLParser::ParseMDBasicType(MDNode *&Result, bool IsDistinct) {
return TokError("unimplemented parser");
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
REQUIRED(tag, DwarfTagField, ); \
OPTIONAL(name, MDStringField, ); \
OPTIONAL(size, MDUnsignedField, (0, UINT32_MAX)); \
OPTIONAL(align, MDUnsignedField, (0, UINT32_MAX)); \
OPTIONAL(encoding, MDUnsignedField, (0, UINT32_MAX));
PARSE_MD_FIELDS();
#undef VISIT_MD_FIELDS
Result = GET_OR_DISTINCT(MDBasicType, (Context, tag.Val, name.Val, size.Val,
align.Val, encoding.Val));
return false;
}
bool LLParser::ParseMDDerivedType(MDNode *&Result, bool IsDistinct) {
return TokError("unimplemented parser");
}

11
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -1371,6 +1371,17 @@ std::error_code BitcodeReader::ParseMetadata() {
NextMDValueNo++);
break;
}
case bitc::METADATA_BASIC_TYPE: {
if (Record.size() != 6)
return Error("Invalid record");
MDValueList.AssignValue(
GET_OR_DISTINCT(MDBasicType, Record[0],
(Context, Record[1], getMDString(Record[2]),
Record[3], Record[4], Record[5])),
NextMDValueNo++);
break;
}
case bitc::METADATA_STRING: {
std::string String(Record.begin(), Record.end());
llvm::UpgradeMDStringConstant(String);

18
lib/Bitcode/Writer/BitcodeWriter.cpp
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@ -838,11 +838,21 @@ static void WriteMDEnumerator(const MDEnumerator *N, const ValueEnumerator &VE,
Record.clear();
}
static void WriteMDBasicType(const MDBasicType *, const ValueEnumerator &,
BitstreamWriter &, SmallVectorImpl<uint64_t> &,
unsigned) {
llvm_unreachable("write not implemented");
static void WriteMDBasicType(const MDBasicType *N, const ValueEnumerator &VE,
BitstreamWriter &Stream,
SmallVectorImpl<uint64_t> &Record,
unsigned Abbrev) {
Record.push_back(N->isDistinct());
Record.push_back(N->getTag());
Record.push_back(VE.getMetadataOrNullID(N->getRawName()));
Record.push_back(N->getSizeInBits());
Record.push_back(N->getAlignInBits());
Record.push_back(N->getEncoding());
Stream.EmitRecord(bitc::METADATA_BASIC_TYPE, Record, Abbrev);
Record.clear();
}
static void WriteMDDerivedType(const MDDerivedType *, const ValueEnumerator &,
BitstreamWriter &, SmallVectorImpl<uint64_t> &,
unsigned) {

18
lib/IR/AsmWriter.cpp
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@ -1366,10 +1366,22 @@ static void writeMDEnumerator(raw_ostream &Out, const MDEnumerator *N,
Out << ")";
}
static void writeMDBasicType(raw_ostream &, const MDBasicType *, TypePrinting *,
SlotTracker *, const Module *) {
llvm_unreachable("write not implemented");
static void writeMDBasicType(raw_ostream &Out, const MDBasicType *N,
TypePrinting *, SlotTracker *, const Module *) {
Out << "!MDBasicType(";
FieldSeparator FS;
writeTag(Out, FS, N);
if (!N->getName().empty())
Out << FS << "name: \"" << N->getName() << "\"";
if (N->getSizeInBits())
Out << FS << "size: " << N->getSizeInBits();
if (N->getAlignInBits())
Out << FS << "align: " << N->getAlignInBits();
if (N->getEncoding())
Out << FS << "encoding: " << N->getEncoding();
Out << ")";
}
static void writeMDDerivedType(raw_ostream &, const MDDerivedType *,
TypePrinting *, SlotTracker *, const Module *) {
llvm_unreachable("write not implemented");

12
test/Assembler/debug-info.ll
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@ -1,8 +1,8 @@
; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
; RUN: verify-uselistorder %s
; CHECK: !named = !{!0, !0, !1, !2, !3, !4, !5}
!named = !{!0, !1, !2, !3, !4, !5, !6}
; CHECK: !named = !{!0, !0, !1, !2, !3, !4, !5, !6, !7, !8, !8}
!named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8, !9, !10}
; CHECK: !0 = !MDSubrange(count: 3)
; CHECK-NEXT: !1 = !MDSubrange(count: 3, lowerBound: 4)
@ -19,3 +19,11 @@
!4 = !MDEnumerator(value: 7, name: "seven")
!5 = !MDEnumerator(value: -8, name: "negeight")
!6 = !MDEnumerator(value: 0, name: "")
; CHECK-NEXT: !6 = !MDBasicType(tag: DW_TAG_base_type, name: "name", size: 1, align: 2, encoding: 3)
; CHECK-NEXT: !7 = !MDBasicType(tag: DW_TAG_unspecified_type, name: "decltype(nullptr)")
; CHECK-NEXT: !8 = !MDBasicType(tag: DW_TAG_base_type)
!7 = !MDBasicType(tag: DW_TAG_base_type, name: "name", size: 1, align: 2, encoding: 3)
!8 = !MDBasicType(tag: DW_TAG_unspecified_type, name: "decltype(nullptr)")
!9 = !MDBasicType(tag: DW_TAG_base_type)
!10 = !MDBasicType(tag: DW_TAG_base_type, name: "", size: 0, align: 0, encoding: 0)

4
test/Assembler/invalid-mdbasictype-missing-tag.ll Normal file
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@ -0,0 +1,4 @@
; RUN: not llvm-as < %s -disable-output 2>&1 | FileCheck %s
; CHECK: [[@LINE+1]]:31: error: missing required field 'tag'
!0 = !MDBasicType(name: "name")