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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 --licm -S -o - | filecheck %s
(module
(memory 10 20)
;; CHECK: (type $0 (func (param i32)))
;; CHECK: (type $1 (func))
;; CHECK: (memory $0 10 20)
;; CHECK: (func $unreachable-get
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: (loop $loop
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $unreachable-get
(local $x i32)
(loop $loop
(unreachable)
;; This loop is unreachable. We should not error on handling it (because it
;; is unreachable it does not have a basic block, which the analysis uses).
;; In this case it is fine to move it out of the loop (though it does not
;; really help much).
(drop
(local.get $x)
)
)
)
;; CHECK: (func $unreachable-get-call (param $p i32)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (loop $loop
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: (call $unreachable-get-call
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $unreachable-get-call (param $p i32)
(local $x i32)
;; As above, but now the get is in a call. We cannot move the call out, as it
;; may have side effects.
(loop $loop
(unreachable)
(call $unreachable-get-call
(local.get $x)
)
)
)
;; CHECK: (func $unreachable-get-store (param $p i32)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (loop $loop
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: (i32.store
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 10)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $unreachable-get-store (param $p i32)
(local $x i32)
;; As above, but now the get is stored. This is a different effect than the
;; call in the function before us, and it too cannot be moved.
(loop $loop
(unreachable)
(i32.store
(local.get $x)
(i32.const 10)
)
)
)
)
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