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

[Kito Cheng via cfe-commits]

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@@ -5554,6 +5554,17 @@ them if they use them.
  }];
 }
 
+def RISCVVLSCCDocs : Documentation {
+ let Category = DocCatCallingConvs;
+ let Heading = "riscv::vls_cc, riscv_vls_cc, clang::riscv_vls_cc";
+ let Content = [{
+The ``riscv_vls_cc`` attribute can be applied to a function. Functions
+declared with this attribute will utilize the standard fixed-length vector
+calling convention variant instead of the default calling convention defined by
+the ABI. This variant aims to pass fixed-length vectors via vector registers,
+if possible, rather than through general-purpose registers.}];
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kito-cheng wrote:

Yes

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