[clang] [libc] [llvm] [NVPTX] Implement variadic functions using IR lowering (PR #96015)

[Artem Belevich via llvm-commits]

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@@ -203,8 +203,12 @@ ABIArgInfo NVPTXABIInfo::classifyArgumentType(QualType Ty) const {
 void NVPTXABIInfo::computeInfo(CGFunctionInfo &FI) const {
   if (!getCXXABI().classifyReturnType(FI))
     FI.getReturnInfo() = classifyReturnType(FI.getReturnType());
+
+  unsigned ArgumentsCount = 0;
   for (auto &I : FI.arguments())
-    I.info = classifyArgumentType(I.type);
+    I.info = ArgumentsCount++ < FI.getNumRequiredArgs()
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Artem-B wrote:

This looks like a good use case for `for (auto &&[index, arg] : llvm::enumerate(FI.arguments)`

https://github.com/llvm/llvm-project/pull/96015