Plug another leak in the DWARF unittests, DIEInlineStrings are never destroyed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289208 91177308-0d34-0410-b5e6-96231b3b80d8

Author: d0k

include/llvm/CodeGen/DIE.h

@@ -256,15 +256,16 @@ class DIEString {
 ///
 /// This class is used with the DW_FORM_string form.
 class DIEInlineString {
-  std::string S;
+  StringRef S;
 
 public:
-  explicit DIEInlineString(StringRef Str) : S(Str.str()) {}
+  template <typename Allocator>
+  explicit DIEInlineString(StringRef Str, Allocator &A) : S(Str.copy(A)) {}
 
   ~DIEInlineString() = default;
 
   /// Grab the string out of the object.
-  StringRef getString() const { return StringRef(S); }
+  StringRef getString() const { return S; }
 
   void EmitValue(const AsmPrinter *AP, dwarf::Form Form) const;
   unsigned SizeOf(const AsmPrinter *AP, dwarf::Form Form) const;

lib/CodeGen/AsmPrinter/DIE.cpp

@@ -606,7 +606,7 @@ unsigned DIEInlineString::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
 
 LLVM_DUMP_METHOD
 void DIEInlineString::print(raw_ostream &O) const {
-  O << "InlineString: " << S.c_str();
+  O << "InlineString: " << S;
 }
 
 //===----------------------------------------------------------------------===//

unittests/DebugInfo/DWARF/DwarfGenerator.cpp

@@ -61,7 +61,8 @@ void dwarfgen::DIE::addAttribute(uint16_t A, dwarf::Form Form,
   auto &DG = CU->getGenerator();
   if (Form == DW_FORM_string) {
     Die->addValue(DG.getAllocator(), static_cast<dwarf::Attribute>(A), Form,
-                  new (DG.getAllocator()) DIEInlineString(String));
+                  new (DG.getAllocator())
+                      DIEInlineString(String, DG.getAllocator()));
   } else {
     Die->addValue(
         DG.getAllocator(), static_cast<dwarf::Attribute>(A), Form,