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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 --enable-reference-types --enable-gc -S -o - \
;; RUN: | filecheck %s
(module
;; These functions test if an `if` with subtyped arms is correctly folded
;; 1. if its `ifTrue` and `ifFalse` arms are identical (can fold)
;; CHECK: (func $if-arms-subtype-fold (result anyref)
;; CHECK-NEXT: (ref.null extern)
;; CHECK-NEXT: )
(func $if-arms-subtype-fold (result anyref)
(if (result anyref)
(i32.const 0)
(ref.null extern)
(ref.null extern)
)
)
;; 2. if its `ifTrue` and `ifFalse` arms are not identical (cannot fold)
;; CHECK: (func $if-arms-subtype-nofold (result anyref)
;; CHECK-NEXT: (if (result anyref)
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: (ref.null extern)
;; CHECK-NEXT: (ref.null func)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $if-arms-subtype-nofold (result anyref)
(if (result anyref)
(i32.const 0)
(ref.null extern)
(ref.null func)
)
)
)
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