[llvm] [SDAG][NVPTX] Cache control metadata support and lowering (PR #204067)

[Yonah Goldberg via llvm-commits]

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@@ -1108,6 +1114,162 @@ bool NVPTXDAGToDAGISel::SelectADDR(SDValue Addr, SDValue &Base,
   return true;
 }
 
+static void emitInvalidMemCacheHint(LLVMContext &Ctx, const Twine &Msg) {
+  Ctx.diagnose(DiagnosticInfoGeneric(
+      Twine("invalid NVPTX !mem.cache_hint metadata: ") + Msg, DS_Warning));
+}
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YonahGoldberg wrote:

mm yeah, I'd say this function is too small and specific to generalize.

https://github.com/llvm/llvm-project/pull/204067