[clang] [clang][Driver] Use shared_ptr in the Compilation class (PR #116406)

[David Truby via cfe-commits]

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@@ -63,41 +56,39 @@ Compilation::getArgsForToolChain(const ToolChain *TC, StringRef BoundArch,
   if (!TC)
     TC = &DefaultToolChain;
 
-  DerivedArgList *&Entry = TCArgs[{TC, BoundArch, DeviceOffloadKind}];
+  std::shared_ptr<DerivedArgList> &Entry =
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DavidTruby wrote:

You can just use a reference to the unique_ptr here, since no ownership is being taken. 

https://github.com/llvm/llvm-project/pull/116406