[llvm] [Inline] Accumulate the cost of the inlined function to the new call site (PR #111104)

[Yingwei Zheng via llvm-commits]

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@@ -0,0 +1,109 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; This tests that a hot callsite gets the (higher) inlinehint-threshold even without
+; without inline hints and gets inlined because the cost is less than
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dtcxzyw wrote:

```suggestion
; inline hints and gets inlined because the cost is less than ???
```

https://github.com/llvm/llvm-project/pull/111104