[clang] [flang] [llvm] [TargetVerifier][AMDGPU] Add TargetVerifier. (PR #123609)

[Shilei Tian via cfe-commits]

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@@ -841,6 +857,11 @@ class PassBuilder {
   // Callbacks to parse `filter` parameter in register allocation passes
   SmallVector<std::function<RegAllocFilterFunc(StringRef)>, 2>
       RegClassFilterParsingCallbacks;
+  // Verifier callbacks
+  SmallVector<std::function<bool(ModulePassManager &)>, 2>
+      VerifierCallbacks;
+  SmallVector<std::function<bool(FunctionPassManager &)>, 2>
+      FnVerifierCallbacks;
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shiltian wrote:

Is it necessary to have two here? We can use adaptor right?

https://github.com/llvm/llvm-project/pull/123609