[llvm] [SjLjEHPrepare] Configure call sites correctly (PR #117656)

[Sergei Barannikov via llvm-commits]

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@@ -435,6 +435,10 @@ bool SjLjEHPrepareImpl::setupEntryBlockAndCallSites(Function &F) {
   // where to look for it.
   Builder.CreateCall(FuncCtxFn, FuncCtx);
 
+  // Register the function context and make sure it's known to not throw.
+  CallInst *Register = Builder.CreateCall(RegisterFn, FuncCtx, "");
+  Register->setDoesNotThrow();
+
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s-barannikov wrote:

This NFC change wasn't strictly necessary, but with it the generated code becomes more logical/structured (setting up call sites right before associated calls).


https://github.com/llvm/llvm-project/pull/117656