#include "llvm/IR/AutoUpgrade.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/Constants.h"
+#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Operator.h"
#include "llvm/IR/ValueSymbolTable.h"
+#include "llvm/Support/Dwarf.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/SaveAndRestore.h"
#include "llvm/Support/raw_ostream.h"
// Resolve metadata cycles.
for (auto &N : NumberedMetadata)
- if (auto *U = cast_or_null<UniquableMDNode>(N))
- U->resolveCycles();
+ if (N && !N->isResolved())
+ N->resolveCycles();
// Look for intrinsic functions and CallInst that need to be upgraded
for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
}
// Otherwise, create MDNode forward reference.
- MDNodeFwdDecl *FwdNode = MDNode::getTemporary(Context, None);
- ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
+ auto &FwdRef = ForwardRefMDNodes[MID];
+ FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
if (NumberedMetadata.size() <= MID)
NumberedMetadata.resize(MID+1);
- NumberedMetadata[MID].reset(FwdNode);
- Result = FwdNode;
+ Result = FwdRef.first.get();
+ NumberedMetadata[MID].reset(Result);
return false;
}
return TokError("unexpected type in metadata definition");
bool IsDistinct = EatIfPresent(lltok::kw_distinct);
- if (ParseToken(lltok::exclaim, "Expected '!' here") ||
- ParseMDTuple(Init, IsDistinct))
+ if (Lex.getKind() == lltok::MetadataVar) {
+ if (ParseSpecializedMDNode(Init, IsDistinct))
+ return true;
+ } else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
+ ParseMDTuple(Init, IsDistinct))
return true;
// See if this was forward referenced, if so, handle it.
auto FI = ForwardRefMDNodes.find(MetadataID);
if (FI != ForwardRefMDNodes.end()) {
- auto *Temp = FI->second.first;
- Temp->replaceAllUsesWith(Init);
- MDNode::deleteTemporary(Temp);
+ FI->second.first->replaceAllUsesWith(Init);
ForwardRefMDNodes.erase(FI);
assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
unsigned MDK = M->getMDKindID(Name);
Lex.Lex();
- if (ParseToken(lltok::exclaim, "expected '!' here"))
+ MDNode *N;
+ if (ParseMDNode(N))
return true;
- // This code is similar to that of ParseMetadata. However, only MDNodes
- // are supported here.
- if (Lex.getKind() == lltok::lbrace) {
- MDNode *N;
- if (ParseMDTuple(N))
- return true;
- Inst->setMetadata(MDK, N);
- } else {
- MDNode *Node;
- if (ParseMDNodeID(Node))
- return true;
- // If we got the node, add it to the instruction.
- Inst->setMetadata(MDK, Node);
- }
-
+ Inst->setMetadata(MDK, N);
if (MDK == LLVMContext::MD_tbaa)
InstsWithTBAATag.push_back(Inst);
if (ParseMDNodeVector(Elts))
return true;
- MD = (IsDistinct ? MDNode::getDistinct : MDNode::get)(Context, Elts);
+ MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
+ return false;
+}
+
+/// MDNode:
+/// ::= !{ ... }
+/// ::= !7
+/// ::= !MDLocation(...)
+bool LLParser::ParseMDNode(MDNode *&N) {
+ if (Lex.getKind() == lltok::MetadataVar)
+ return ParseSpecializedMDNode(N);
+
+ return ParseToken(lltok::exclaim, "expected '!' here") ||
+ ParseMDNodeTail(N);
+}
+
+bool LLParser::ParseMDNodeTail(MDNode *&N) {
+ // !{ ... }
+ if (Lex.getKind() == lltok::lbrace)
+ return ParseMDTuple(N);
+
+ // !42
+ return ParseMDNodeID(N);
+}
+
+bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
+ MDUnsignedField<uint32_t> &Result) {
+ if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
+ return TokError("expected unsigned integer");
+ uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(Result.Max + 1ull);
+
+ if (Val64 > Result.Max)
+ return TokError("value for '" + Name + "' too large, limit is " +
+ Twine(Result.Max));
+ Result.assign(Val64);
+ Lex.Lex();
+ return false;
+}
+
+bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
+ if (Lex.getKind() == lltok::APSInt)
+ return ParseMDField(Loc, Name,
+ static_cast<MDUnsignedField<uint32_t> &>(Result));
+
+ if (Result.Seen)
+ return Error(Loc,
+ "field '" + Name + "' cannot be specified more than once");
+
+ if (Lex.getKind() != lltok::DwarfTag)
+ return TokError("expected DWARF tag");
+
+ unsigned Tag = dwarf::getTag(Lex.getStrVal());
+ if (Tag == dwarf::DW_TAG_invalid)
+ return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
+ assert(Tag < 1u << 16 && "Expected valid DWARF tag");
+
+ Result.assign(Tag);
+ Lex.Lex();
+ return false;
+}
+
+bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
+ Metadata *MD;
+ if (ParseMetadata(MD, nullptr))
+ return true;
+
+ Result.assign(MD);
return false;
}
+bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
+ std::string S;
+ if (ParseStringConstant(S))
+ return true;
+
+ Result.assign(std::move(S));
+ return false;
+}
+
+bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
+ SmallVector<Metadata *, 4> MDs;
+ if (ParseMDNodeVector(MDs))
+ return true;
+
+ Result.assign(std::move(MDs));
+ return false;
+}
+
+template <class ParserTy>
+bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
+ do {
+ if (Lex.getKind() != lltok::LabelStr)
+ return TokError("expected field label here");
+
+ if (parseField())
+ return true;
+ } while (EatIfPresent(lltok::comma));
+
+ return false;
+}
+
+template <class ParserTy>
+bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
+ assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
+ Lex.Lex();
+
+ if (ParseToken(lltok::lparen, "expected '(' here"))
+ return true;
+ if (Lex.getKind() != lltok::rparen)
+ if (ParseMDFieldsImplBody(parseField))
+ return true;
+
+ ClosingLoc = Lex.getLoc();
+ return ParseToken(lltok::rparen, "expected ')' here");
+}
+
+template <class FieldTy>
+bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
+ if (Result.Seen)
+ return TokError("field '" + Name + "' cannot be specified more than once");
+
+ LocTy Loc = Lex.getLoc();
+ Lex.Lex();
+ return ParseMDField(Loc, Name, Result);
+}
+
+bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
+ assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
+#define DISPATCH_TO_PARSER(CLASS) \
+ if (Lex.getStrVal() == #CLASS) \
+ return Parse##CLASS(N, IsDistinct);
+
+ DISPATCH_TO_PARSER(MDLocation);
+ DISPATCH_TO_PARSER(GenericDebugNode);
+#undef DISPATCH_TO_PARSER
+
+ return TokError("expected metadata type");
+}
+
+#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
+#define NOP_FIELD(NAME, TYPE, INIT)
+#define REQUIRE_FIELD(NAME, TYPE, INIT) \
+ if (!NAME.Seen) \
+ return Error(ClosingLoc, "missing required field '" #NAME "'");
+#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
+ if (Lex.getStrVal() == #NAME) \
+ return ParseMDField(#NAME, NAME);
+#define PARSE_MD_FIELDS() \
+ VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
+ do { \
+ LocTy ClosingLoc; \
+ if (ParseMDFieldsImpl([&]() -> bool { \
+ VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
+ return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
+ }, ClosingLoc)) \
+ return true; \
+ VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
+ } while (false)
+#define GET_OR_DISTINCT(CLASS, ARGS) \
+ (IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
+
+/// ParseMDLocationFields:
+/// ::= !MDLocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
+bool LLParser::ParseMDLocation(MDNode *&Result, bool IsDistinct) {
+#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
+ OPTIONAL(line, MDUnsignedField<uint32_t>, (0, ~0u >> 8)); \
+ OPTIONAL(column, MDUnsignedField<uint32_t>, (0, ~0u >> 16)); \
+ REQUIRED(scope, MDField, ); \
+ OPTIONAL(inlinedAt, MDField, );
+ PARSE_MD_FIELDS();
+#undef VISIT_MD_FIELDS
+
+ auto get = (IsDistinct ? MDLocation::getDistinct : MDLocation::get);
+ Result = get(Context, line.Val, column.Val, scope.Val, inlinedAt.Val);
+ return false;
+}
+
+/// ParseGenericDebugNode:
+/// ::= !GenericDebugNode(tag: 15, header: "...", operands: {...})
+bool LLParser::ParseGenericDebugNode(MDNode *&Result, bool IsDistinct) {
+#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
+ REQUIRED(tag, DwarfTagField, ); \
+ OPTIONAL(header, MDStringField, ); \
+ OPTIONAL(operands, MDFieldList, );
+ PARSE_MD_FIELDS();
+#undef VISIT_MD_FIELDS
+
+ Result = GET_OR_DISTINCT(GenericDebugNode,
+ (Context, tag.Val, header.Val, operands.Val));
+ return false;
+}
+#undef PARSE_MD_FIELD
+#undef NOP_FIELD
+#undef REQUIRE_FIELD
+#undef DECLARE_FIELD
+
/// ParseMetadataAsValue
/// ::= metadata i32 %local
/// ::= metadata i32 @global
/// ::= !42
/// ::= !{...}
/// ::= !"string"
+/// ::= !MDLocation(...)
bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
+ if (Lex.getKind() == lltok::MetadataVar) {
+ MDNode *N;
+ if (ParseSpecializedMDNode(N))
+ return true;
+ MD = N;
+ return false;
+ }
+
// ValueAsMetadata:
// <type> <value>
if (Lex.getKind() != lltok::exclaim)
assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
Lex.Lex();
- // MDNode:
- // !{ ... }
- if (Lex.getKind() == lltok::lbrace) {
- MDNode *N;
- if (ParseMDTuple(N))
- return true;
- MD = N;
- return false;
- }
-
- // Standalone metadata reference
- // !42
- if (Lex.getKind() == lltok::APSInt) {
- MDNode *N;
- if (ParseMDNodeID(N))
+ // MDString:
+ // ::= '!' STRINGCONSTANT
+ if (Lex.getKind() == lltok::StringConstant) {
+ MDString *S;
+ if (ParseMDString(S))
return true;
- MD = N;
+ MD = S;
return false;
}
- // MDString:
- // ::= '!' STRINGCONSTANT
- MDString *S;
- if (ParseMDString(S))
+ // MDNode:
+ // !{ ... }
+ // !7
+ MDNode *N;
+ if (ParseMDNodeTail(N))
return true;
- MD = S;
+ MD = N;
return false;
}
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