[llvm] [llvm-objdump] Add triple support to `mcpu=help` (PR #165661)

[James Henderson via llvm-commits]

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@@ -3533,6 +3533,35 @@ commaSeparatedValues(const llvm::opt::InputArgList &InputArgs, int ID) {
   return Values;
 }
 
+static void mcpuHelp() {
+  std::string Error;
+  Triple DummyTriple;
+
+  if (!TripleName.empty())
+    DummyTriple.setTriple(TripleName);
+  else {
+    // If the target triple is derived from the files, we display help message
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jh7370 wrote:

Going back to my original comment in this thread: there's no need for the `if (Disassemble)` clause to be inside the else case. It should be the main route taken when disassembling and the rest of this function should only occur if we are not disassembling.

https://github.com/llvm/llvm-project/pull/165661