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Introduce MetadataBase, a base class for MDString and MDNode.

Browse Source 
Derive MDString directly from MetadataBase. 
Introduce new bitcode block to hold metadata.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76759 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-07-22 17:43:22 +00:00
parent dbe77cfa0b
commit e54abc90fe
16 changed files with 231 additions and 130 deletions
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35
lib/AsmParser/LLParser.cpp
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@ -42,7 +42,8 @@ namespace llvm {
t_Null, t_Undef, t_Zero, // No value.
t_EmptyArray, // No value: []
t_Constant, // Value in ConstantVal.
t_InlineAsm // Value in StrVal/StrVal2/UIntVal.
t_InlineAsm, // Value in StrVal/StrVal2/UIntVal.
t_Metadata // Value in MetadataVal.
} Kind;
LLParser::LocTy Loc;
@ -51,6 +52,7 @@ namespace llvm {
APSInt APSIntVal;
APFloat APFloatVal;
Constant *ConstantVal;
MetadataBase *MetadataVal;
ValID() : APFloatVal(0.0) {}
};
}
@ -368,7 +370,7 @@ bool LLParser::ParseNamedGlobal() {
// MDString:
// ::= '!' STRINGCONSTANT
bool LLParser::ParseMDString(Constant *&MDS) {
bool LLParser::ParseMDString(MetadataBase *&MDS) {
std::string Str;
if (ParseStringConstant(Str)) return true;
MDS = Context.getMDString(Str.data(), Str.data() + Str.size());
@ -1694,7 +1696,8 @@ bool LLParser::ParseValID(ValID &ID) {
// MDString:
// ::= '!' STRINGCONSTANT
if (ParseMDString(ID.ConstantVal)) return true;
if (ParseMDString(ID.MetadataVal)) return true;
ID.Kind = ValID::t_Metadata;
return false;
}
case lltok::APSInt:
@ -2107,7 +2110,9 @@ bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
return Error(ID.Loc, "functions are not values, refer to them as pointers");
switch (ID.Kind) {
default: llvm_unreachable("Unknown ValID!");
default: llvm_unreachable("Unknown ValID!");
case ValID::t_Metadata:
return Error(ID.Loc, "invalid use of metadata");
case ValID::t_LocalID:
case ValID::t_LocalName:
return Error(ID.Loc, "invalid use of function-local name");
@ -2224,6 +2229,8 @@ bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
return Error(ID.Loc, "invalid type for inline asm constraint string");
V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal);
return false;
} else if (ID.Kind == ValID::t_Metadata) {
V = ID.MetadataVal;
} else {
Constant *C;
if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
@ -3451,9 +3458,23 @@ bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
Lex.Lex();
V = 0;
} else {
Constant *C;
if (ParseGlobalTypeAndValue(C)) return true;
V = C;
PATypeHolder Ty(Type::VoidTy);
if (ParseType(Ty)) return true;
if (Lex.getKind() == lltok::Metadata) {
Lex.Lex();
Constant *Node = 0;
if (!ParseMDNode(Node))
V = Node;
else {
MetadataBase *MDS = 0;
if (ParseMDString(MDS)) return true;
V = MDS;
}
} else {
Constant *C;
if (ParseGlobalValue(Ty, C)) return true;
V = C;
}
}
Elts.push_back(V);
} while (EatIfPresent(lltok::comma));