[clang] [flang] [flang][clang] Add support for -finit-logical in Flang (PR #150939)

[Tarun Prabhu via cfe-commits]

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@@ -1541,6 +1541,22 @@ bool CompilerInvocation::createFromArgs(
   else
     invoc.loweringOpts.setInitGlobalZero(false);
 
+  // -finit-logical
+  if (const auto *arg =
+          args.getLastArg(clang::driver::options::OPT_finit_logical_EQ)) {
+    llvm::StringRef argValue = llvm::StringRef(arg->getValue());
+    if (argValue.lower() == "true")
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tarunprabhu wrote:

Consider using `StringRef::compare_insensitive` here. `lower()` creates a new std::string which seems unnecessary. 

https://github.com/llvm/llvm-project/pull/150939