[Bug tree-optimization/55180] Missed optimization abs(-x) -> abs(x)

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55180
Bug 55180 depends on bug 16107, which changed state.

Bug 16107 Summary: missed optimization with some math function builtins
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=16107

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED