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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 --nominal --gto -all -S -o - | filecheck %s
;; (remove-unused-names is added to test fallthrough values without a block
;; name getting in the way)
(module
;; The struct here has three fields, and the second of them has no struct.set
;; which means we can make it immutable.
;; CHECK: (type $struct (struct_subtype (field (mut funcref)) (field funcref) (field (mut funcref)) data))
(type $struct (struct (field (mut funcref)) (field (mut funcref)) (field (mut funcref))))
;; Test that we update tag types properly.
;; CHECK: (type $ref|$struct|_=>_none (func_subtype (param (ref $struct)) func))
;; CHECK: (type $none_=>_ref?|$struct| (func_subtype (result (ref null $struct)) func))
;; CHECK: (tag $tag (param (ref $struct)))
(tag $tag (param (ref $struct)))
;; CHECK: (func $func (param $x (ref $struct))
;; CHECK-NEXT: (local $temp (ref null $struct))
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (struct.new $struct
;; CHECK-NEXT: (ref.null func)
;; CHECK-NEXT: (ref.null func)
;; CHECK-NEXT: (ref.null func)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (struct.set $struct 0
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (ref.null func)
;; CHECK-NEXT: )
;; CHECK-NEXT: (struct.set $struct 2
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (ref.null func)
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (struct.get $struct 0
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (struct.get $struct 1
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $func (param $x (ref $struct))
(local $temp (ref null $struct))
;; The presence of a struct.new does not prevent this optimization: we just
;; care about writes using struct.set.
(drop
(struct.new $struct
(ref.null func)
(ref.null func)
(ref.null func)
)
)
(struct.set $struct 0
(local.get $x)
(ref.null func)
)
(struct.set $struct 2
(local.get $x)
(ref.null func)
)
;; Test that local types remain valid after our work (otherwise, we'd get a
;; validation error).
(local.set $temp
(local.get $x)
)
;; Test that struct.get types remain valid after our work.
(drop
(struct.get $struct 0
(local.get $x)
)
)
(drop
(struct.get $struct 1
(local.get $x)
)
)
)
;; CHECK: (func $foo (result (ref null $struct))
;; CHECK-NEXT: (try $try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $tag
;; CHECK-NEXT: (return
;; CHECK-NEXT: (pop (ref $struct))
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (ref.null $struct)
;; CHECK-NEXT: )
(func $foo (result (ref null $struct))
;; Use a tag so that we test proper updating of its type after making
;; changes.
(try
(do
(nop)
)
(catch $tag
(return
(pop (ref $struct))
)
)
)
(ref.null $struct)
)
)
(module
;; Test recursion between structs where we only modify one. Specifically $B
;; has no writes to either of its fields.
;; CHECK: (type $A (struct_subtype (field (mut (ref null $B))) (field (mut i32)) data))
(type $A (struct (field (mut (ref null $B))) (field (mut i32)) ))
;; CHECK: (type $B (struct_subtype (field (ref null $A)) (field f64) data))
(type $B (struct (field (mut (ref null $A))) (field (mut f64)) ))
;; CHECK: (type $ref|$A|_=>_none (func_subtype (param (ref $A)) func))
;; CHECK: (func $func (param $x (ref $A))
;; CHECK-NEXT: (struct.set $A 0
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (ref.null $B)
;; CHECK-NEXT: )
;; CHECK-NEXT: (struct.set $A 1
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 20)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $func (param $x (ref $A))
(struct.set $A 0
(local.get $x)
(ref.null $B)
)
(struct.set $A 1
(local.get $x)
(i32.const 20)
)
)
)
(module
;; As before, but flipped so that $A's fields can become immutable.
;; CHECK: (type $B (struct_subtype (field (mut (ref null $A))) (field (mut f64)) data))
(type $B (struct (field (mut (ref null $A))) (field (mut f64)) ))
;; CHECK: (type $A (struct_subtype (field (ref null $B)) (field i32) data))
(type $A (struct (field (mut (ref null $B))) (field (mut i32)) ))
;; CHECK: (type $ref|$B|_=>_none (func_subtype (param (ref $B)) func))
;; CHECK: (func $func (param $x (ref $B))
;; CHECK-NEXT: (struct.set $B 0
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (ref.null $A)
;; CHECK-NEXT: )
;; CHECK-NEXT: (struct.set $B 1
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (f64.const 3.14159)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $func (param $x (ref $B))
(struct.set $B 0
(local.get $x)
(ref.null $A)
)
(struct.set $B 1
(local.get $x)
(f64.const 3.14159)
)
)
)
(module
;; As before, but now one field in each can become immutable.
;; CHECK: (type $B (struct_subtype (field (ref null $A)) (field (mut f64)) data))
(type $B (struct (field (mut (ref null $A))) (field (mut f64)) ))
;; CHECK: (type $A (struct_subtype (field (mut (ref null $B))) (field i32) data))
(type $A (struct (field (mut (ref null $B))) (field (mut i32)) ))
;; CHECK: (type $ref|$A|_ref|$B|_=>_none (func_subtype (param (ref $A) (ref $B)) func))
;; CHECK: (func $func (param $x (ref $A)) (param $y (ref $B))
;; CHECK-NEXT: (struct.set $A 0
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (ref.null $B)
;; CHECK-NEXT: )
;; CHECK-NEXT: (struct.set $B 1
;; CHECK-NEXT: (local.get $y)
;; CHECK-NEXT: (f64.const 3.14159)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $func (param $x (ref $A)) (param $y (ref $B))
(struct.set $A 0
(local.get $x)
(ref.null $B)
)
(struct.set $B 1
(local.get $y)
(f64.const 3.14159)
)
)
)
(module
;; Field #0 is already immutable.
;; Field #1 is mutable and can become so.
;; Field #2 is mutable and must remain so.
;; CHECK: (type $struct (struct_subtype (field i32) (field i32) (field (mut i32)) data))
(type $struct (struct (field i32) (field (mut i32)) (field (mut i32))))
;; CHECK: (type $ref|$struct|_=>_none (func_subtype (param (ref $struct)) func))
;; CHECK: (func $func (param $x (ref $struct))
;; CHECK-NEXT: (struct.set $struct 2
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $func (param $x (ref $struct))
(struct.set $struct 2
(local.get $x)
(i32.const 1)
)
)
)
(module
;; Subtyping. Without a write in either supertype or subtype, we can
;; optimize the field to be immutable.
;; CHECK: (type $none_=>_none (func_subtype func))
;; CHECK: (type $super (struct_subtype (field i32) data))
(type $super (struct (field (mut i32))))
;; CHECK: (type $sub (struct_subtype (field i32) $super))
(type $sub (struct_subtype (field (mut i32)) $super))
;; CHECK: (func $func
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (struct.new $super
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (struct.new $sub
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $func
;; The presence of struct.new do not prevent us optimizing
(drop
(struct.new $super
(i32.const 1)
)
)
(drop
(struct.new $sub
(i32.const 1)
)
)
)
)
(module
;; As above, but add a write in the super, which prevents optimization.
;; CHECK: (type $super (struct_subtype (field (mut i32)) data))
(type $super (struct (field (mut i32))))
;; CHECK: (type $ref|$super|_=>_none (func_subtype (param (ref $super)) func))
;; CHECK: (type $sub (struct_subtype (field (mut i32)) $super))
(type $sub (struct_subtype (field (mut i32)) $super))
;; CHECK: (func $func (param $x (ref $super))
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (struct.new $super
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (struct.new $sub
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (struct.set $super 0
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $func (param $x (ref $super))
;; The presence of struct.new do not prevent us optimizing
(drop
(struct.new $super
(i32.const 1)
)
)
(drop
(struct.new $sub
(i32.const 1)
)
)
(struct.set $super 0
(local.get $x)
(i32.const 2)
)
)
)
(module
;; As above, but add a write in the sub, which prevents optimization.
;; CHECK: (type $sub (struct_subtype (field (mut i32)) $super))
;; CHECK: (type $ref|$sub|_=>_none (func_subtype (param (ref $sub)) func))
;; CHECK: (type $super (struct_subtype (field (mut i32)) data))
(type $super (struct (field (mut i32))))
(type $sub (struct_subtype (field (mut i32)) $super))
;; CHECK: (func $func (param $x (ref $sub))
;; CHECK-NEXT: (struct.set $sub 0
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $func (param $x (ref $sub))
(struct.set $sub 0
(local.get $x)
(i32.const 2)
)
)
)
|
