[clang] [flang] [clang][driver] When -fveclib=ArmPL flag is in use, always link against libamath (PR #116432)

[Fangrui Song via cfe-commits]

================
@@ -490,6 +490,17 @@ void tools::AddLinkerInputs(const ToolChain &TC, const 
InputInfoList &Inputs,
     else
       A.renderAsInput(Args, CmdArgs);
   }
+  if (const Arg *A = Args.getLastArg(options::OPT_fveclib)) {
+    if (A->getNumValues() == 1) {
----------------
MaskRay wrote:

fveclib is a Joined option that takes exactly one value. `getNumValues() == 1` 
is an unneeded test

https://github.com/llvm/llvm-project/pull/116432
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