[llvm] [Exegesis] CPU selection, when native arch and target mismatch (PR #131014)

[Aiden Grossman via llvm-commits]

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@@ -479,6 +480,12 @@ void benchmarkMain() {
 #endif
   }
 
+  // case for cross generating, when native arch and target mismatch
+  if ((Triple(sys::getProcessTriple()).getArch() !=
+       Triple(TripleName).getArch()) &&
+      (MCPU == "native"))
+    ExitWithError("Incorrect cpu. To see all possible options use -mcpu=help");
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boomanaiden154 wrote:

Can we be a bit more descriptive here? Maybe something like `A CPU must be explicitly specified when cross compiling. To see all possible options use -mcpu=help`?

https://github.com/llvm/llvm-project/pull/131014