[clang] [clang][driver][darwin] Prefer DarwinSDKInfo for platform identification and compatibility over the -isysroot path (PR #176541)

[Cyndy Ishida via cfe-commits]

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@@ -1118,6 +1118,40 @@ AppleMachO::~AppleMachO() {}
 
 MachO::~MachO() {}
 
+void Darwin::CheckSDKSupportsTriple(const llvm::opt::ArgList &Args,
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cyndyishida wrote:

nit: s/CheckSDKSupportsTriple/VerifyTripleForSDK

https://github.com/llvm/llvm-project/pull/176541