[llvm] [NVPTX] Misc table-gen cleanup (NFC) (PR #142877)

[Alex MacLean via llvm-commits]

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@@ -513,14 +498,14 @@ class CpAsyncBulkStr<bit mc, bit ch, bit mask = 0> {
 }
 
 multiclass CP_ASYNC_BULK_S2G_INTR<bit has_ch> {
-  def NAME : NVPTXInst<(outs), (ins ADDR:$dst, ADDR:$src, Int32Regs:$size, Int64Regs:$ch),
+  def "" : NVPTXInst<(outs), (ins ADDR:$dst, ADDR:$src, Int32Regs:$size, Int64Regs:$ch),
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AlexMaclean wrote:

I personally think the empty string is more consistent with cases where we specify a prefix and a bit more concise. I wanted to be sure we were using the same thing everywhere do you recall why NAME was preferred? 

https://github.com/llvm/llvm-project/pull/142877