[clang] [clang-repl] Honor `-emit-llvm` to print incremental IR (PR #217870)

[Vassil Vassilev via cfe-commits]

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@@ -361,8 +367,19 @@ int main(int argc, const char **argv) {
 
   bool HasError = false;
 
+  auto ProcessInput = [&](llvm::StringRef Input) -> llvm::Error {
+    if (!EmitLLVMIR)
+      return Interp->ParseAndExecute(Input);
+    auto PTU = Interp->Parse(Input);
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vgvassilev wrote:

After we parse we do not seem to be calling Execute to register the module in the jit.

https://github.com/llvm/llvm-project/pull/217870