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fix a bug preventing inlining of getindex of const globals #35239

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Mar 25, 2020
Merged

fix a bug preventing inlining of getindex of const globals #35239

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2 changes: 1 addition & 1 deletion base/compiler/optimize.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -280,7 +280,7 @@ intrinsic_effect_free_if_nothrow(f) = f === Intrinsics.pointerref || is_pure_int
plus_saturate(x::Int, y::Int) = max(x, y, x+y)

# known return type
isknowntype(@nospecialize T) = (T === Union{}) || isconcretetype(T)
isknowntype(@nospecialize T) = (T === Union{}) || isa(T, Const) || isconcretetype(widenconst(T))

function statement_cost(ex::Expr, line::Int, src::CodeInfo, sptypes::Vector{Any}, slottypes::Vector{Any}, params::Params)
head = ex.head
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6 changes: 6 additions & 0 deletions test/compiler/inline.jl
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Expand Up @@ -282,3 +282,9 @@ end
@test ccall(:jl_ast_flag_inlineable, Bool, (Any,), first(methods(@inline function f(x) x end)).source)
@test !ccall(:jl_ast_flag_inlineable, Bool, (Any,), first(methods(function f(x) x end)).source)
end

const _a_global_array = [1]
f_inline_global_getindex() = _a_global_array[1]
let ci = code_typed(f_inline_global_getindex, Tuple{})[1].first
@test any(x->(isexpr(x, :call) && x.args[1] === GlobalRef(Base, :arrayref)), ci.code)
end