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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 --closed-world -tnh --type-merging --remove-unused-types -all -S -o - | filecheck %s
;; ref.cast does not inhibit merging if traps never happen.
(module
;; CHECK: (rec
;; CHECK-NEXT: (type $A (sub (struct)))
(type $A (sub (struct)))
(type $B (sub $A (struct)))
;; CHECK: (type $1 (func (param (ref $A)) (result (ref $A))))
;; CHECK: (func $test (type $1) (param $a (ref $A)) (result (ref $A))
;; CHECK-NEXT: (ref.cast (ref $A)
;; CHECK-NEXT: (local.get $a)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $test (param $a (ref $A)) (result (ref $B))
(ref.cast (ref $B)
(local.get $a)
)
)
)
;; Check that a ref.test still inhibits merging with -tnh.
(module
;; CHECK: (rec
;; CHECK-NEXT: (type $A (sub (struct)))
(type $A (sub (struct)))
;; CHECK: (type $B (sub $A (struct)))
(type $B (sub $A (struct)))
;; CHECK: (type $2 (func (param (ref $A)) (result i32)))
;; CHECK: (func $test (type $2) (param $a (ref $A)) (result i32)
;; CHECK-NEXT: (ref.test (ref $B)
;; CHECK-NEXT: (local.get $a)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $test (param $a (ref $A)) (result i32)
(ref.test (ref $B)
(local.get $a)
)
)
)
;; Check that a br_on_cast still inhibits merging with -tnh.
(module
;; CHECK: (rec
;; CHECK-NEXT: (type $A (sub (struct)))
(type $A (sub (struct)))
;; CHECK: (type $B (sub $A (struct)))
(type $B (sub $A (struct)))
;; CHECK: (type $2 (func (param (ref $A)) (result (ref $B))))
;; CHECK: (func $test (type $2) (param $a (ref $A)) (result (ref $B))
;; CHECK-NEXT: (block $label (result (ref $B))
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (br_on_cast $label (ref $A) (ref $B)
;; CHECK-NEXT: (local.get $a)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (block $l (result (ref $A))
;; CHECK-NEXT: (br_on_non_null $l
;; CHECK-NEXT: (local.get $a)
;; CHECK-NEXT: )
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $test (param $a (ref $A)) (result (ref $B))
(drop
(br_on_cast 0 anyref (ref $B)
(local.get $a)
)
)
;; Also check that a different br_on* doesn't confuse us.
(drop
(block $l (result (ref $A))
(br_on_non_null $l
(local.get $a)
)
(unreachable)
)
)
(unreachable)
)
)
;; call_indirect should not inhibit merging if traps never happen.
(module
;; CHECK: (type $A (sub (func)))
(type $A (sub (func)))
(type $B (sub $A (func)))
(table 1 1 (ref null $A))
;; CHECK: (table $0 1 1 (ref null $A))
;; CHECK: (func $test (type $A)
;; CHECK-NEXT: (call_indirect $0 (type $A)
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $test (type $A)
(call_indirect (type $B)
(i32.const 0)
)
)
)
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