[llvm] [llc] Provide `opt` like verifier options (PR #106665)

[Arthur Eubanks via llvm-commits]

================
@@ -32,6 +32,8 @@ class ToolOutputFile;
 class LLVMContext;
 class MIRParser;
 
+enum class VerifierKind { NoVerifier, VerifyOut, VerifyEachPass };
----------------
aeubanks wrote:

I thought the default was "verify input and output", so `VerifyOut` is misleading. `VerifyInputOutput`?

Ah I see that you copied this from opt. But yeah the name should be changed

https://github.com/llvm/llvm-project/pull/106665