[llvm] [llubi] Add support for undef values (PR #205602)

[Nikita Popov via llvm-commits]

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@@ -2522,6 +2401,7 @@ class InstExecutor : public InstVisitor<InstExecutor, void>,
 
         Instruction &I = *Top.PC;
         visit(&I);
+        Ctx.resetNoncacheableConstantBuffer();
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nikic wrote:

Should there also be a call during globals initialization?

https://github.com/llvm/llvm-project/pull/205602