[clang] [llvm] [RISCV] Add support for vector registers with -fzero-call-used-regs (PR #206206)

[Luke Lau via cfe-commits]

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@@ -7057,8 +7041,7 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
     // The backend code needs to be changed to include the appropriate function
     // calls automatically.
     StringRef Value = A->getValue();
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lukel97 wrote:

Sorry just noticing this now, Value is dead so needs to be removed otherwise any `-Werror` buildbots will fail

https://github.com/llvm/llvm-project/pull/206206