[Bug ipa/119376] [15 Regression] musttail does not get dropped after inlining?

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119376

--- Comment #24 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
MpUnknownEnumFallback also fails still because we didn't optimize away this:
```
  <bb 35> [count: 0]:
<L12>:
  goto <bb 39>; [100.00%]

...

  <bb 38> [count: 0]:
<L10>:

  <bb 39> [count: 0]:
<L7>:
  resx 1
```