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;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s --optimize-instructions --ignore-implicit-traps --enable-reference-types --enable-gc -S -o - \
;; RUN: | filecheck %s
(module
(type $parent (struct (field i32)))
(type $child (struct (field i32) (field f64)))
(type $other (struct (field i64) (field f32)))
(func $foo)
;; CHECK: (func $ref-cast-iit (param $parent (ref $parent)) (param $child (ref $child)) (param $other (ref $other)) (param $parent-rtt (rtt $parent)) (param $child-rtt (rtt $child)) (param $other-rtt (rtt $other))
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (block (result (ref $parent))
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $parent-rtt)
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.get $parent)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (block (result (ref $child))
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $parent-rtt)
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.get $child)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (ref.cast
;; CHECK-NEXT: (local.get $parent)
;; CHECK-NEXT: (local.get $child-rtt)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (ref.cast
;; CHECK-NEXT: (local.get $child)
;; CHECK-NEXT: (local.get $other-rtt)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $ref-cast-iit
(param $parent (ref $parent))
(param $child (ref $child))
(param $other (ref $other))
(param $parent-rtt (rtt $parent))
(param $child-rtt (rtt $child))
(param $other-rtt (rtt $other))
;; a cast of parent to an rtt of parent: static subtyping matches.
(drop
(ref.cast
(local.get $parent)
(local.get $parent-rtt)
)
)
;; a cast of child to a supertype: static subtyping matches.
(drop
(ref.cast
(local.get $child)
(local.get $parent-rtt)
)
)
;; a cast of parent to a subtype: static subtyping does not match.
(drop
(ref.cast
(local.get $parent)
(local.get $child-rtt)
)
)
;; a cast of child to an unrelated type: static subtyping does not match.
(drop
(ref.cast
(local.get $child)
(local.get $other-rtt)
)
)
)
;; CHECK: (func $ref-cast-iit-bad (param $parent (ref $parent)) (param $parent-rtt (rtt $parent))
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (ref.cast
;; CHECK-NEXT: (block $block (result (ref $parent))
;; CHECK-NEXT: (call $foo)
;; CHECK-NEXT: (local.get $parent)
;; CHECK-NEXT: )
;; CHECK-NEXT: (block $block0 (result (rtt $parent))
;; CHECK-NEXT: (call $foo)
;; CHECK-NEXT: (local.get $parent-rtt)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (ref.cast
;; CHECK-NEXT: (local.get $parent)
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (ref.cast
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: (local.get $parent-rtt)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $ref-cast-iit-bad
(param $parent (ref $parent))
(param $parent-rtt (rtt $parent))
;; ignore due to the inability to reorder
(drop
(ref.cast
(block (result (ref $parent))
(call $foo)
(local.get $parent)
)
(block (result (rtt $parent))
(call $foo)
(local.get $parent-rtt)
)
)
)
;; ignore unreachability
(drop
(ref.cast
(local.get $parent)
(unreachable)
)
)
(drop
(ref.cast
(unreachable)
(local.get $parent-rtt)
)
)
)
)
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