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

[Craig Topper via cfe-commits]

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@@ -111,9 +115,51 @@ void RISCVABIInfo::appendAttributeMangling(StringRef AttrStr,
 }
 
 void RISCVABIInfo::computeInfo(CGFunctionInfo &FI) const {
+  unsigned ABIVLen;
+  switch (FI.getExtInfo().getCC()) {
+  default:
+    ABIVLen = 0;
+    break;
+  case CallingConv::CC_RISCVVLSCall_32:
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topperc wrote:

Use a macro like you did in other places?

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