[llvm] [IR] Add CallBr intrinsics support (PR #133907)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,70 @@
+; RUN: rm -rf %t && split-file %s %t
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arsenm wrote:

Try to avoid split-file. It's kind of useful in cases with poor error handling (as in they exit early without reporting all errors in the file). Maintaining codegen tests using it is unnecessarily difficult.

https://github.com/llvm/llvm-project/pull/133907