[gcc] Deleted branch 'wschmidt/heads/issue580-gcc9' in namespace 'refs/users'

[William Schmidt]

The branch 'wschmidt/heads/issue580-gcc9' in namespace 'refs/users' was deleted.
It previously pointed to:

 553ba99cf4f... rs6000: Fix -mpower9-vector -mno-altivec ICE (PR87560)

Diff:

!!! WARNING: THE FOLLOWING COMMITS ARE NO LONGER ACCESSIBLE (LOST):
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  553ba99... rs6000: Fix -mpower9-vector -mno-altivec ICE (PR87560)