[clang] [flang] [flang] Support -f(no-)protect-parens (PR #170505)

[via cfe-commits]

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@@ -40,6 +40,7 @@ CODEGENOPT(PrepareForFullLTO , 1, 0) ///< Set when -flto is enabled on the
                                      ///< compile step.
 CODEGENOPT(PrepareForThinLTO , 1, 0) ///< Set when -flto=thin is enabled on the
                                      ///< compile step.
+CODEGENOPT(ProtectParens, 1, 1) ///< -fprotect-parens (enable parenthesis protection)
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jeanPerier wrote:

Ah, I missed this use case. Never mind then, this looks consistent.

https://github.com/llvm/llvm-project/pull/170505