[llvm] [llvm][lit] Omit vendor in triples for "native" feature (PR #136325)

[David Spickett via llvm-commits]

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@@ -108,14 +118,17 @@ def __init__(self, lit_config, config):
         elif platform.system() == "OS/390":
             features.add("system-zos")
 
-        # Native compilation: host arch == default triple arch
+        # Native compilation: host arch == default triple arch (sans vendor)
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DavidSpickett wrote:

Without vendor assuming the vendor is not significant to ABI.

Maybe you could say:
Native compilation: host arch == default triple arch (for ABI purposes)

https://github.com/llvm/llvm-project/pull/136325