[clang] [clang] Update typechecking of builtin elementwise ternary math operators (PR #155620)

[via cfe-commits]

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@@ -266,6 +266,9 @@ Bug Fixes in This Version
   calls another function that requires target features not enabled in the caller. This
   prevents a fatal error in the backend.
 - Fixed scope of typedefs present inside a template class. (#GH91451)
+- Builtin elementwise operators now accept vector arguments that have different
+  qualifiers on their elements. For example, vector of 4 ``const float`` values
+  and vector of 4 ``float`` values. (#GH155620)
----------------
Sirraide wrote:

```suggestion
  and vector of 4 ``float`` values. (#GH155405)
```
This is supposed to be the issue that is fixed by this, not the pr number.

https://github.com/llvm/llvm-project/pull/155620