Merge branch 'master' into avi/inferencerefactor

base/compiler/abstractinterpretation.jl

@@ -1999,7 +1999,8 @@ function abstract_eval_statement(interp::AbstractInterpreter, @nospecialize(e),
                 effects.effect_free ? ALWAYS_TRUE : TRISTATE_UNKNOWN,
                 effects.nothrow ? ALWAYS_TRUE : TRISTATE_UNKNOWN,
                 effects.terminates_globally ? ALWAYS_TRUE : TRISTATE_UNKNOWN,
-                #=nonoverlayed=#true
+                #=nonoverlayed=#true,
+                #=notaskstate=#TRISTATE_UNKNOWN
             ))
         else
             tristate_merge!(sv, EFFECTS_UNKNOWN)

base/compiler/ssair/show.jl

@@ -802,6 +802,8 @@ function Base.show(io::IO, e::Core.Compiler.Effects)
     printstyled(io, string(tristate_letter(e.nothrow), 'n'); color=tristate_color(e.nothrow))
     print(io, ',')
     printstyled(io, string(tristate_letter(e.terminates), 't'); color=tristate_color(e.terminates))
+    print(io, ',')
+    printstyled(io, string(tristate_letter(e.notaskstate), 's'); color=tristate_color(e.notaskstate))
     print(io, ')')
     e.nonoverlayed || printstyled(io, '′'; color=:red)
 end

base/compiler/tfuncs.jl

@@ -559,6 +559,7 @@ add_tfunc(atomic_pointerswap, 3, 3, (a, v, order) -> (@nospecialize; pointer_elt
 add_tfunc(atomic_pointermodify, 4, 4, atomic_pointermodify_tfunc, 5)
 add_tfunc(atomic_pointerreplace, 5, 5, atomic_pointerreplace_tfunc, 5)
 add_tfunc(donotdelete, 0, INT_INF, (@nospecialize args...)->Nothing, 0)
+add_tfunc(Core.finalizer, 2, 2, (@nospecialize args...)->Nothing, 5)
 
 # more accurate typeof_tfunc for vararg tuples abstract only in length
 function typeof_concrete_vararg(t::DataType)

base/compiler/types.jl

@@ -45,6 +45,11 @@ The effects are composed of the following set of different properties:
 - `terminates::TriState`: this method is guaranteed to terminate
 - `nonoverlayed::Bool`: indicates that any methods that may be called within this method
   are not defined in an [overlayed method table](@ref OverlayMethodTable)
+- `notaskstate::TriState`: this method does not access any state bound to the current
+  task and may thus be moved to a different task without changing observable
+  behavior. Note that this currently implies that `noyield` as well, since
+  yielding modifies the state of the current task, though this may be split
+  in the future.
 See [`Base.@assume_effects`](@ref) for more detailed explanation on the definitions of these properties.
 
 Along the abstract interpretation, `Effects` at each statement are analyzed locally and
@@ -67,6 +72,7 @@ struct Effects
     nothrow::TriState
     terminates::TriState
     nonoverlayed::Bool
+    notaskstate::TriState
     # This effect is currently only tracked in inference and modified
     # :consistent before caching. We may want to track it in the future.
     inbounds_taints_consistency::Bool
@@ -76,41 +82,46 @@ function Effects(
     effect_free::TriState,
     nothrow::TriState,
     terminates::TriState,
-    nonoverlayed::Bool)
+    nonoverlayed::Bool,
+    notaskstate::TriState)
     return Effects(
         consistent,
         effect_free,
         nothrow,
         terminates,
         nonoverlayed,
+        notaskstate,
         false)
 end
 
-const EFFECTS_TOTAL    = Effects(ALWAYS_TRUE,      ALWAYS_TRUE,      ALWAYS_TRUE,      ALWAYS_TRUE,      true)
-const EFFECTS_THROWS   = Effects(ALWAYS_TRUE,      ALWAYS_TRUE,      TRISTATE_UNKNOWN, ALWAYS_TRUE,      true)
-const EFFECTS_UNKNOWN  = Effects(TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, true)  # mostly unknown, but it's not overlayed at least (e.g. it's not a call)
-const EFFECTS_UNKNOWN′ = Effects(TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, false) # unknown, really
+const EFFECTS_TOTAL    = Effects(ALWAYS_TRUE,      ALWAYS_TRUE,      ALWAYS_TRUE,      ALWAYS_TRUE,      true, ALWAYS_TRUE)
+const EFFECTS_THROWS   = Effects(ALWAYS_TRUE,      ALWAYS_TRUE,      TRISTATE_UNKNOWN, ALWAYS_TRUE,      true, ALWAYS_TRUE)
+const EFFECTS_UNKNOWN  = Effects(TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, true, TRISTATE_UNKNOWN)  # mostly unknown, but it's not overlayed at least (e.g. it's not a call)
+const EFFECTS_UNKNOWN′ = Effects(TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, TRISTATE_UNKNOWN, false, TRISTATE_UNKNOWN) # unknown, really
 
 function Effects(e::Effects = EFFECTS_UNKNOWN′;
     consistent::TriState = e.consistent,
     effect_free::TriState = e.effect_free,
     nothrow::TriState = e.nothrow,
     terminates::TriState = e.terminates,
     nonoverlayed::Bool = e.nonoverlayed,
+    notaskstate::TriState = e.notaskstate,
     inbounds_taints_consistency::Bool = e.inbounds_taints_consistency)
     return Effects(
         consistent,
         effect_free,
         nothrow,
         terminates,
         nonoverlayed,
+        notaskstate,
         inbounds_taints_consistency)
 end
 
 is_consistent(effects::Effects)   = effects.consistent === ALWAYS_TRUE
 is_effect_free(effects::Effects)  = effects.effect_free === ALWAYS_TRUE
 is_nothrow(effects::Effects)      = effects.nothrow === ALWAYS_TRUE
 is_terminates(effects::Effects)   = effects.terminates === ALWAYS_TRUE
+is_notaskstate(effects::Effects)  = effects.notaskstate === ALWAYS_TRUE
 is_nonoverlayed(effects::Effects) = effects.nonoverlayed
 
 is_concrete_eval_eligible(effects::Effects) =
@@ -132,7 +143,8 @@ function encode_effects(e::Effects)
            (e.effect_free.state << 2) |
            (e.nothrow.state << 4) |
            (e.terminates.state << 6) |
-           (UInt32(e.nonoverlayed) << 8)
+           (UInt32(e.nonoverlayed) << 8) |
+           (UInt32(e.notaskstate.state) << 9)
 end
 function decode_effects(e::UInt32)
     return Effects(
@@ -141,6 +153,7 @@ function decode_effects(e::UInt32)
         TriState((e >> 4) & 0x03),
         TriState((e >> 6) & 0x03),
         _Bool(   (e >> 8) & 0x01),
+        TriState((e >> 9) & 0x03),
         false)
 end
 
@@ -155,6 +168,8 @@ function tristate_merge(old::Effects, new::Effects)
         tristate_merge(
             old.terminates, new.terminates),
         old.nonoverlayed & new.nonoverlayed,
+        tristate_merge(
+            old.notaskstate, new.notaskstate),
         old.inbounds_taints_consistency | new.inbounds_taints_consistency)
 end
 

base/docs/basedocs.jl

@@ -3068,4 +3068,25 @@ end
 """
 Base.donotdelete
 
+"""
+    Core.finalizer(f, o)
+
+This builtin is an implementation detail of [`Base.finalizer`](@ref) and end-users
+should use the latter instead.
+
+# Differences from `Base.finalizer`
+
+The interface of `Core.finalizer` is essentially the same as `Base.finalizer`,
+but there are a number of small differences. They are documented here for
+completeness only and (unlike `Base.finalizer`) have no stability guarantees.
+
+The current differences are:
+    - `Core.finalizer` does not check for mutability of `o`. Attempting to register
+      a finalizer for an immutable object is undefined behavior.
+    - The value `f` must be a Julia object. `Core.finalizer` does not support a
+      raw C function pointer.
+    - `Core.finalizer` returns `nothing` rather than `o`.
+"""
+Core.finalizer
+
 end

base/gcutils.jl

@@ -4,17 +4,27 @@
 ==(w::WeakRef, v) = isequal(w.value, v)
 ==(w, v::WeakRef) = isequal(w, v.value)
 
+# Used by `Base.finalizer` to validate mutability of an object being finalized.
+function _check_mutable(@nospecialize(o)) @noinline
+    if !ismutable(o)
+        error("objects of type ", typeof(o), " cannot be finalized")
+    end
+end
+
 """
     finalizer(f, x)
 
 Register a function `f(x)` to be called when there are no program-accessible references to
-`x`, and return `x`. The type of `x` must be a `mutable struct`, otherwise the behavior of
-this function is unpredictable.
+`x`, and return `x`. The type of `x` must be a `mutable struct`, otherwise the function
+will throw.
 
 `f` must not cause a task switch, which excludes most I/O operations such as `println`.
 Using the `@async` macro (to defer context switching to outside of the finalizer) or
 `ccall` to directly invoke IO functions in C may be helpful for debugging purposes.
 
+Note that there is no guaranteed world age for the execution of `f`. It may be
+called in the world age in which the finalizer was registered or any later world age.
+
 # Examples
 ```julia
 finalizer(my_mutable_struct) do x
@@ -42,18 +52,13 @@ end
 ```
 """
 function finalizer(@nospecialize(f), @nospecialize(o))
-    if !ismutable(o)
-        error("objects of type ", typeof(o), " cannot be finalized")
-    end
-    ccall(:jl_gc_add_finalizer_th, Cvoid, (Ptr{Cvoid}, Any, Any),
-          Core.getptls(), o, f)
+    _check_mutable(o)
+    Core.finalizer(f, o)
     return o
 end
 
 function finalizer(f::Ptr{Cvoid}, o::T) where T @inline
-    if !ismutable(o)
-        error("objects of type ", typeof(o), " cannot be finalized")
-    end
+    _check_mutable(o)
     ccall(:jl_gc_add_ptr_finalizer, Cvoid, (Ptr{Cvoid}, Any, Ptr{Cvoid}),
           Core.getptls(), o, f)
     return o

deps/Versions.make

@@ -90,7 +90,7 @@ OPENLIBM_JLL_NAME := OpenLibm
 PATCHELF_VER := 0.13
 
 # p7zip
-P7ZIP_VER := 16.2.0
+P7ZIP_VER := 17.04
 P7ZIP_JLL_NAME := p7zip
 
 # PCRE

deps/checksums/p7zip

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-p7zip.v16.2.1+1.aarch64-linux-gnu.tar.gz/md5/35a760ced992c9cd4c6085e40394299b
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