[llvm] [llvm-exegesis][AArch64] Disable pauth and ldgm as unsupported instructions (PR #132346)

[Lakshay Kumar via llvm-commits]

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@@ -39,12 +39,18 @@ const char *
 ExegesisTarget::getIgnoredOpcodeReasonOrNull(const LLVMState &State,
                                              unsigned Opcode) const {
   const MCInstrDesc &InstrDesc = State.getIC().getInstr(Opcode).Description;
-  if (InstrDesc.isPseudo() || InstrDesc.usesCustomInsertionHook())
-    return "Unsupported opcode: isPseudo/usesCustomInserter";
-  if (InstrDesc.isBranch() || InstrDesc.isIndirectBranch())
-    return "Unsupported opcode: isBranch/isIndirectBranch";
-  if (InstrDesc.isCall() || InstrDesc.isReturn())
-    return "Unsupported opcode: isCall/isReturn";
+  if (InstrDesc.isPseudo())
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lakshayk-nv wrote:

> split up the first couple of if-statements as I don't like error messages that say "it can be this or that":
>>
Sjoerd suggested 'unclubbing' the unsupported error message to specify the exact reason. Thus, keeping this and formatter's changes for this file only.

https://github.com/llvm/llvm-project/pull/132346