Replace the std::map in the init list checker with a DenseMap to reduce malloc thrashing.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151254 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaInit.cpp b/lib/Sema/SemaInit.cpp
index 31e4ecb..55ab8dd 100644
--- a/lib/Sema/SemaInit.cpp
+++ b/lib/Sema/SemaInit.cpp
@@ -173,7 +173,7 @@
bool hadError;
bool VerifyOnly; // no diagnostics, no structure building
bool AllowBraceElision;
- std::map<InitListExpr *, InitListExpr *> SyntacticToSemantic;
+ llvm::DenseMap<InitListExpr *, InitListExpr *> SyntacticToSemantic;
InitListExpr *FullyStructuredList;
void CheckImplicitInitList(const InitializedEntity &Entity,
@@ -1632,7 +1632,7 @@
// Determine the structural initializer list that corresponds to the
// current subobject.
- StructuredList = IsFirstDesignator? SyntacticToSemantic[IList]
+ StructuredList = IsFirstDesignator? SyntacticToSemantic.lookup(IList)
: getStructuredSubobjectInit(IList, Index, CurrentObjectType,
StructuredList, StructuredIndex,
SourceRange(D->getStartLocation(),
@@ -2046,7 +2046,7 @@
return 0; // No structured list in verification-only mode.
Expr *ExistingInit = 0;
if (!StructuredList)
- ExistingInit = SyntacticToSemantic[IList];
+ ExistingInit = SyntacticToSemantic.lookup(IList);
else if (StructuredIndex < StructuredList->getNumInits())
ExistingInit = StructuredList->getInit(StructuredIndex);