inference: use ssa_def_slot for InterConditional propagation
#43147
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This tweak should allow constraint propagation in following kind of cases: ```julia julia> isaT(x, T) = isa(x, T); \# backward propagation julia> @test Base.return_types((Any,Int)) do a, b c = a if isaT(c, typeof(b)) return c # c::Int end return 0 end |> only === Int; \# forward propagation julia> @test Base.return_types((Any,Vector{Any})) do x, y z = x ifelse(isa(z, Int), z, length(y)) end |> only === Int; ```
vtjnash
approved these changes
Nov 19, 2021
LilithHafner
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that referenced
this pull request
Feb 22, 2022
…iaLang#43147) This tweak should allow constraint propagation in following kind of cases: ```julia julia> isaT(x, T) = isa(x, T); \# backward propagation julia> @test Base.return_types((Any,Int)) do a, b c = a if isaT(c, typeof(b)) return c # c::Int end return 0 end |> only === Int; \# forward propagation julia> @test Base.return_types((Any,Vector{Any})) do x, y z = x ifelse(isa(z, Int), z, length(y)) end |> only === Int; ```
LilithHafner
pushed a commit
to LilithHafner/julia
that referenced
this pull request
Mar 8, 2022
…iaLang#43147) This tweak should allow constraint propagation in following kind of cases: ```julia julia> isaT(x, T) = isa(x, T); \# backward propagation julia> @test Base.return_types((Any,Int)) do a, b c = a if isaT(c, typeof(b)) return c # c::Int end return 0 end |> only === Int; \# forward propagation julia> @test Base.return_types((Any,Vector{Any})) do x, y z = x ifelse(isa(z, Int), z, length(y)) end |> only === Int; ```
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This tweak should allow constraint propagation in following kind of cases: