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Replace std::map<K, V*> with std::map<K, std::unique_ptr<V>> to handle ownership and deletion of the values. 

Ideally we would store the MultiClasses by value directly in the maps, but I had some trouble with that before and this at least fixes the leak.

llvm-svn: 223997
This commit is contained in:
Craig Topper 2014-12-11 05:25:30 +00:00
parent 611a3ef0bc
commit 7adf2bf76a
2 changed files with 9 additions and 6 deletions
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13
llvm/lib/TableGen/TGParser.cpp
View File

@ -459,7 +459,7 @@ MultiClass *TGParser::ParseMultiClassID() {
return nullptr;
}
MultiClass *Result = MultiClasses[Lex.getCurStrVal()];
MultiClass *Result = MultiClasses[Lex.getCurStrVal()].get();
if (!Result)
TokError("Couldn't find multiclass '" + Lex.getCurStrVal() + "'");
@ -2290,11 +2290,14 @@ bool TGParser::ParseMultiClass() {
return TokError("expected identifier after multiclass for name");
std::string Name = Lex.getCurStrVal();
if (MultiClasses.count(Name))
auto Result =
MultiClasses.insert(std::make_pair(Name,
llvm::make_unique<MultiClass>(Name, Lex.getLoc(),Records)));
if (!Result.second)
return TokError("multiclass '" + Name + "' already defined");
CurMultiClass = MultiClasses[Name] = new MultiClass(Name,
Lex.getLoc(), Records);
CurMultiClass = Result.first->second.get();
Lex.Lex(); // Eat the identifier.
// If there are template args, parse them.
@ -2555,7 +2558,7 @@ bool TGParser::ParseDefm(MultiClass *CurMultiClass) {
// To instantiate a multiclass, we need to first get the multiclass, then
// instantiate each def contained in the multiclass with the SubClassRef
// template parameters.
MultiClass *MC = MultiClasses[Ref.Rec->getName()];
MultiClass *MC = MultiClasses[Ref.Rec->getName()].get();
assert(MC && "Didn't lookup multiclass correctly?");
std::vector<Init*> &TemplateVals = Ref.TemplateArgs;

2
llvm/lib/TableGen/TGParser.h
View File

@ -55,7 +55,7 @@ namespace llvm {
class TGParser {
TGLexer Lex;
std::vector<std::vector<LetRecord> > LetStack;
std::map<std::string, MultiClass*> MultiClasses;
std::map<std::string, std::unique_ptr<MultiClass>> MultiClasses;
/// Loops - Keep track of any foreach loops we are within.
///