[clang] [llvm] [RISCV][VLS] Support RISCV VLS calling convention (PR #100346)

[Brandon Wu via llvm-commits]

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@@ -3013,6 +3013,7 @@ enum CXCallingConv {
   CXCallingConv_M68kRTD = 19,
   CXCallingConv_PreserveNone = 20,
   CXCallingConv_RISCVVectorCall = 21,
+  CXCallingConv_RISCVVLSCall = 22,
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4vtomat wrote:

Let me clarify this, do you mean using different calling convention attributes like `__attribute__((riscv_vls_cc_32))`, `__attribute__(riscv_vls_cc_64))`, `__attribute__(riscv_vls_cc_128))`, etc.?

https://github.com/llvm/llvm-project/pull/100346