[clang] [clang] Make -fveclib={ArmPL, SLEEF} imply -fno-math-errno (PR #112580)

[Benjamin Maxwell via cfe-commits]

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@@ -3410,7 +3410,8 @@ def fno_experimental_isel : Flag<["-"], "fno-experimental-isel">, Group<f_clang_
   Alias<fno_global_isel>;
 def fveclib : Joined<["-"], "fveclib=">, Group<f_Group>,
   Visibility<[ClangOption, CC1Option, FlangOption, FC1Option]>,
-    HelpText<"Use the given vector functions library">,
+    HelpText<"Use the given vector functions library."
+             "Note: In clang -fveclib={ArmPL,SLEEF} implies -fno-math-errno">,
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MacDue wrote:

Ah thanks, done :+1: 

https://github.com/llvm/llvm-project/pull/112580