[clang] [llvm] [OptBisect][IR] Adding a new OptPassGate for disabling passes via name (PR #145059)

[Nikita Popov via cfe-commits]

================
@@ -86,6 +91,16 @@ StringRef Pass::getPassName() const {
   return "Unnamed pass: implement Pass::getPassName()";
 }
 
+/// getPassArgument - Return a nice clean name for a pass
+/// corresponding to that used to enable the pass in opt
+StringRef Pass::getPassArgument() const {
+  AnalysisID AID = getPassID();
+  const PassInfo *PI = PassRegistry::getPassRegistry()->getPassInfo(AID);
----------------
nikic wrote:

```suggestion
  const PassInfo *PI = Pass::lookupPassInfo(AID);
```

https://github.com/llvm/llvm-project/pull/145059
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