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|
;; NOTE: Assertions have been generated by update_lit_checks.py --all-items and should not be edited.
;; RUN: foreach %s %t wasm-opt --global-refining -all -S -o - | filecheck %s
;; RUN: foreach %s %t wasm-opt --global-refining --closed-world -all -S -o - | filecheck %s --check-prefix=CLOSD
(module
;; Globals with no assignments aside from their initial values. The first is a
;; null, so we can optimize to a nullfuncref. The second is a ref.func which
;; lets us refine to the specific function type.
;; CHECK: (type $foo_t (func))
;; CLOSD: (type $foo_t (func))
(type $foo_t (func))
;; CHECK: (global $func-null-init (mut nullfuncref) (ref.null nofunc))
;; CLOSD: (global $func-null-init (mut nullfuncref) (ref.null nofunc))
(global $func-null-init (mut funcref) (ref.null $foo_t))
;; CHECK: (global $func-func-init (mut (ref $foo_t)) (ref.func $foo))
;; CLOSD: (global $func-func-init (mut (ref $foo_t)) (ref.func $foo))
(global $func-func-init (mut funcref) (ref.func $foo))
;; CHECK: (func $foo (type $foo_t)
;; CHECK-NEXT: )
;; CLOSD: (func $foo (type $foo_t)
;; CLOSD-NEXT: )
(func $foo (type $foo_t))
)
(module
;; Globals with later assignments of null. The global with a function in its
;; init will update the null to allow it to refine.
;; CHECK: (type $foo_t (func))
;; CLOSD: (type $foo_t (func))
(type $foo_t (func))
;; CHECK: (global $func-null-init (mut nullfuncref) (ref.null nofunc))
;; CLOSD: (global $func-null-init (mut nullfuncref) (ref.null nofunc))
(global $func-null-init (mut funcref) (ref.null $foo_t))
;; CHECK: (global $func-func-init (mut (ref null $foo_t)) (ref.func $foo))
;; CLOSD: (global $func-func-init (mut (ref null $foo_t)) (ref.func $foo))
(global $func-func-init (mut funcref) (ref.func $foo))
;; CHECK: (func $foo (type $foo_t)
;; CHECK-NEXT: (global.set $func-null-init
;; CHECK-NEXT: (ref.null nofunc)
;; CHECK-NEXT: )
;; CHECK-NEXT: (global.set $func-func-init
;; CHECK-NEXT: (ref.null nofunc)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CLOSD: (func $foo (type $foo_t)
;; CLOSD-NEXT: (global.set $func-null-init
;; CLOSD-NEXT: (ref.null nofunc)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: (global.set $func-func-init
;; CLOSD-NEXT: (ref.null nofunc)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: )
(func $foo (type $foo_t)
(global.set $func-null-init (ref.null func))
(global.set $func-func-init (ref.null $foo_t))
)
)
(module
;; Globals with later assignments of something non-null. Both can be refined,
;; and the one with a non-null initial value can even become non-nullable.
;; CHECK: (type $0 (func))
;; CHECK: (global $func-null-init (mut (ref null $0)) (ref.null nofunc))
;; CLOSD: (type $0 (func))
;; CLOSD: (global $func-null-init (mut (ref null $0)) (ref.null nofunc))
(global $func-null-init (mut funcref) (ref.null func))
;; CHECK: (global $func-func-init (mut (ref $0)) (ref.func $foo))
;; CLOSD: (global $func-func-init (mut (ref $0)) (ref.func $foo))
(global $func-func-init (mut funcref) (ref.func $foo))
;; CHECK: (elem declare func $foo)
;; CHECK: (func $foo (type $0)
;; CHECK-NEXT: (global.set $func-null-init
;; CHECK-NEXT: (ref.func $foo)
;; CHECK-NEXT: )
;; CHECK-NEXT: (global.set $func-func-init
;; CHECK-NEXT: (ref.func $foo)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CLOSD: (elem declare func $foo)
;; CLOSD: (func $foo (type $0)
;; CLOSD-NEXT: (global.set $func-null-init
;; CLOSD-NEXT: (ref.func $foo)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: (global.set $func-func-init
;; CLOSD-NEXT: (ref.func $foo)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: )
(func $foo
(global.set $func-null-init (ref.func $foo))
(global.set $func-func-init (ref.func $foo))
)
)
(module
;; A global with multiple later assignments. The refined type is more
;; specific than the original, but less than each of the non-null values.
;; CHECK: (type $0 (func))
;; CHECK: (type $struct (struct))
;; CLOSD: (type $0 (func))
;; CLOSD: (type $struct (struct))
(type $struct (struct))
(type $array (array i8))
;; CHECK: (global $global (mut eqref) (ref.null none))
;; CLOSD: (global $global (mut eqref) (ref.null none))
(global $global (mut anyref) (ref.null any))
;; CHECK: (func $foo (type $0)
;; CHECK-NEXT: (global.set $global
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (global.set $global
;; CHECK-NEXT: (struct.new_default $struct)
;; CHECK-NEXT: )
;; CHECK-NEXT: (global.set $global
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: )
;; CHECK-NEXT: (global.set $global
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: )
;; CHECK-NEXT: (global.set $global
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CLOSD: (func $foo (type $0)
;; CLOSD-NEXT: (global.set $global
;; CLOSD-NEXT: (ref.i31
;; CLOSD-NEXT: (i32.const 0)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: )
;; CLOSD-NEXT: (global.set $global
;; CLOSD-NEXT: (struct.new_default $struct)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: (global.set $global
;; CLOSD-NEXT: (ref.null none)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: (global.set $global
;; CLOSD-NEXT: (ref.null none)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: (global.set $global
;; CLOSD-NEXT: (ref.null none)
;; CLOSD-NEXT: )
;; CLOSD-NEXT: )
(func $foo
(global.set $global (ref.i31 (i32.const 0)))
(global.set $global (struct.new_default $struct))
(global.set $global (ref.null eq))
;; These nulls will be updated.
(global.set $global (ref.null i31))
(global.set $global (ref.null $array))
)
)
;; We can refine $a, after which we should update the global.get in the other
;; global, or else we'd error on validation.
;; TODO: we could optimize further here and refine the type of the global $b.
(module
;; CHECK: (type $super (sub (func)))
;; CLOSD: (type $super (sub (func)))
(type $super (sub (func)))
;; CHECK: (type $sub (sub $super (func)))
;; CLOSD: (type $sub (sub $super (func)))
(type $sub (sub $super (func)))
;; CHECK: (global $a (ref $sub) (ref.func $func))
;; CLOSD: (global $a (ref $sub) (ref.func $func))
(global $a (ref $super) (ref.func $func))
;; CHECK: (global $b (ref $super) (global.get $a))
;; CLOSD: (global $b (ref $super) (global.get $a))
(global $b (ref $super) (global.get $a))
;; CHECK: (func $func (type $sub)
;; CHECK-NEXT: )
;; CLOSD: (func $func (type $sub)
;; CLOSD-NEXT: )
(func $func (type $sub)
)
)
;; Test all combinations of being exported and being mutable.
;;
;; Mutability limits our ability to optimize in open world: mutable globals that
;; are exported cannot be refined, as they might be modified in another module
;; using the old type. In closed world, however, we can optimize both globals
;; here, as mutability is not a concern. As a result, we can refine the
;; (ref null func) to nullfuncref only when not exported, and if exported, then
;; only when immutable in open world.
(module
;; CHECK: (global $mut (mut nullfuncref) (ref.null nofunc))
;; CLOSD: (global $mut (mut nullfuncref) (ref.null nofunc))
(global $mut (mut (ref null func)) (ref.null nofunc))
;; CHECK: (global $imm nullfuncref (ref.null nofunc))
;; CLOSD: (global $imm nullfuncref (ref.null nofunc))
(global $imm (ref null func) (ref.null nofunc))
;; CHECK: (global $mut-exp (mut funcref) (ref.null nofunc))
;; CLOSD: (global $mut-exp (mut funcref) (ref.null nofunc))
(global $mut-exp (mut (ref null func)) (ref.null nofunc))
;; CHECK: (global $imm-exp nullfuncref (ref.null nofunc))
;; CLOSD: (global $imm-exp funcref (ref.null nofunc))
(global $imm-exp (ref null func) (ref.null nofunc))
;; CHECK: (export "mut-exp" (global $mut-exp))
;; CLOSD: (export "mut-exp" (global $mut-exp))
(export "mut-exp" (global $mut-exp))
;; CHECK: (export "imm-exp" (global $imm-exp))
;; CLOSD: (export "imm-exp" (global $imm-exp))
(export "imm-exp" (global $imm-exp))
)
|
