From ba6057de7198f57738550fccb5b43d30f83757bb Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Fri, 24 Apr 2015 06:49:44 +0000
Subject: [TableGen] Don't leak Expanders and Operators in SetTheory.

llvm-svn: 235697
---
 llvm/lib/TableGen/SetTheory.cpp | 41 +++++++++++++++++++++--------------------
 1 file changed, 21 insertions(+), 20 deletions(-)

(limited to 'llvm/lib/TableGen/SetTheory.cpp')

diff --git a/llvm/lib/TableGen/SetTheory.cpp b/llvm/lib/TableGen/SetTheory.cpp
index c99c2bab45a..a8816c87814 100644
--- a/llvm/lib/TableGen/SetTheory.cpp
+++ b/llvm/lib/TableGen/SetTheory.cpp
@@ -245,28 +245,28 @@ void SetTheory::Expander::anchor() {}
 
 
 SetTheory::SetTheory() {
-  addOperator("add", new AddOp);
-  addOperator("sub", new SubOp);
-  addOperator("and", new AndOp);
-  addOperator("shl", new ShlOp);
-  addOperator("trunc", new TruncOp);
-  addOperator("rotl", new RotOp(false));
-  addOperator("rotr", new RotOp(true));
-  addOperator("decimate", new DecimateOp);
-  addOperator("interleave", new InterleaveOp);
-  addOperator("sequence", new SequenceOp);
+  addOperator("add", llvm::make_unique<AddOp>());
+  addOperator("sub", llvm::make_unique<SubOp>());
+  addOperator("and", llvm::make_unique<AndOp>());
+  addOperator("shl", llvm::make_unique<ShlOp>());
+  addOperator("trunc", llvm::make_unique<TruncOp>());
+  addOperator("rotl", llvm::make_unique<RotOp>(false));
+  addOperator("rotr", llvm::make_unique<RotOp>(true));
+  addOperator("decimate", llvm::make_unique<DecimateOp>());
+  addOperator("interleave", llvm::make_unique<InterleaveOp>());
+  addOperator("sequence", llvm::make_unique<SequenceOp>());
 }
 
-void SetTheory::addOperator(StringRef Name, Operator *Op) {
-  Operators[Name] = Op;
+void SetTheory::addOperator(StringRef Name, std::unique_ptr<Operator> Op) {
+  Operators[Name] = std::move(Op);
 }
 
-void SetTheory::addExpander(StringRef ClassName, Expander *E) {
-  Expanders[ClassName] = E;
+void SetTheory::addExpander(StringRef ClassName, std::unique_ptr<Expander> E) {
+  Expanders[ClassName] = std::move(E);
 }
 
 void SetTheory::addFieldExpander(StringRef ClassName, StringRef FieldName) {
-  addExpander(ClassName, new FieldExpander(FieldName));
+  addExpander(ClassName, llvm::make_unique<FieldExpander>(FieldName));
 }
 
 void SetTheory::evaluate(Init *Expr, RecSet &Elts, ArrayRef<SMLoc> Loc) {
@@ -289,10 +289,10 @@ void SetTheory::evaluate(Init *Expr, RecSet &Elts, ArrayRef<SMLoc> Loc) {
   DefInit *OpInit = dyn_cast<DefInit>(DagExpr->getOperator());
   if (!OpInit)
     PrintFatalError(Loc, "Bad set expression: " + Expr->getAsString());
-  Operator *Op = Operators.lookup(OpInit->getDef()->getName());
-  if (!Op)
+  auto I = Operators.find(OpInit->getDef()->getName());
+  if (I == Operators.end())
     PrintFatalError(Loc, "Unknown set operator: " + Expr->getAsString());
-  Op->apply(*this, DagExpr, Elts, Loc);
+  I->second->apply(*this, DagExpr, Elts, Loc);
 }
 
 const RecVec *SetTheory::expand(Record *Set) {
@@ -307,11 +307,12 @@ const RecVec *SetTheory::expand(Record *Set) {
     // Skip unnamed superclasses.
     if (!dyn_cast<StringInit>(SC[i]->getNameInit()))
       continue;
-    if (Expander *Exp = Expanders.lookup(SC[i]->getName())) {
+    auto I = Expanders.find(SC[i]->getName());
+    if (I != Expanders.end()) {
       // This breaks recursive definitions.
       RecVec &EltVec = Expansions[Set];
       RecSet Elts;
-      Exp->expand(*this, Set, Elts);
+      I->second->expand(*this, Set, Elts);
       EltVec.assign(Elts.begin(), Elts.end());
       return &EltVec;
     }
-- 
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