[llvm] [aarch64] atan2 intrinsic lowering (p5) (PR #112611)

[Thorsten Schütt via llvm-commits]

================
@@ -0,0 +1,255 @@
+# RUN: llc -verify-machineinstrs -mtriple aarch64--- \
----------------
tschuett wrote:

```
> ./llvm/utils/update_mir_test_checks.py llvm/test/CodeGen/AArch64/GlobalISel/legalize-atan2.mir
```

https://github.com/llvm/llvm-project/pull/112611