Drop phase.isTyper use in isLegalPrefix/asf #21954
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Note that "asSeenFrom" (aka asf) is used by SymDenotation#findMember,
which is used by TypeComparer's "hasMatchingMember", as a part of
"compareRefinedSlow".
Previously (using the minimisation in i17222.8.scala) `summonOne` is
inlined during the "inlining" phase, while "summonInline" is inlined
during typing. The result is that during inlining we fail to find
`Reader[BC, Int]` because we incorrectly consider `A{type F = Int}` as
stable.
Gedochao
added
the
backport:nominated
Gedochao
requested review from
sjrd and
noti0na1
and removed request for
jchyb
noti0na1
reviewed
Nov 20, 2024
dwijnand
deleted the
i17222-anon-mixin-inline-match-erasedValue-summonInline
branch
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Note that "asSeenFrom" (aka asf) is used by SymDenotation#findMember,
which is used by TypeComparer's "hasMatchingMember", as a part of
"compareRefinedSlow".
Previously (using the minimisation in i17222.8.scala)
summonOneisinlined during the "inlining" phase, while "summonInline" is inlined
during typing. The result is that during inlining we fail to find
Reader[BC, Int]because we incorrectly considerA{type F = Int}asstable.
Fixes #17222