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;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s --generate-stack-ir --optimize-stack-ir -all --print-stack-ir | filecheck %s
;; Also verify we roundtrip the output here properly.
;; RUN: wasm-opt %s --generate-stack-ir --optimize-stack-ir -all --roundtrip --print | filecheck %s --check-prefix=ROUNDTRIP
(module
;; CHECK: (func $drop-unreachable (type $0) (result i32)
;; CHECK-NEXT: call $drop-unreachable
;; CHECK-NEXT: unreachable
;; CHECK-NEXT: )
;; ROUNDTRIP: (func $drop-unreachable (type $0) (result i32)
;; ROUNDTRIP-NEXT: (drop
;; ROUNDTRIP-NEXT: (call $drop-unreachable)
;; ROUNDTRIP-NEXT: )
;; ROUNDTRIP-NEXT: (unreachable)
;; ROUNDTRIP-NEXT: )
(func $drop-unreachable (result i32)
;; This drop can be removed.
(drop
(call $drop-unreachable)
)
(unreachable)
)
;; CHECK: (func $unreachable (type $0) (result i32)
;; CHECK-NEXT: unreachable
;; CHECK-NEXT: )
;; ROUNDTRIP: (func $unreachable (type $0) (result i32)
;; ROUNDTRIP-NEXT: (unreachable)
;; ROUNDTRIP-NEXT: )
(func $unreachable (result i32)
;; An unreachable with nothing before it. Check we do not error here.
(unreachable)
)
;; CHECK: (func $unreachable-non-drop (type $1)
;; CHECK-NEXT: call $unreachable-non-drop
;; CHECK-NEXT: unreachable
;; CHECK-NEXT: )
;; ROUNDTRIP: (func $unreachable-non-drop (type $1)
;; ROUNDTRIP-NEXT: (call $unreachable-non-drop)
;; ROUNDTRIP-NEXT: (unreachable)
;; ROUNDTRIP-NEXT: )
(func $unreachable-non-drop
;; An unreachable with something other than a drop before it. Check we do
;; not error here.
(call $unreachable-non-drop)
(unreachable)
)
;; CHECK: (func $many-drop-unreachable (type $0) (result i32)
;; CHECK-NEXT: i32.const 1
;; CHECK-NEXT: if (result i32)
;; CHECK-NEXT: call $drop-unreachable
;; CHECK-NEXT: unreachable
;; CHECK-NEXT: else
;; CHECK-NEXT: call $drop-unreachable
;; CHECK-NEXT: unreachable
;; CHECK-NEXT: end
;; CHECK-NEXT: drop
;; CHECK-NEXT: call $drop-unreachable
;; CHECK-NEXT: unreachable
;; CHECK-NEXT: )
;; ROUNDTRIP: (func $many-drop-unreachable (type $0) (result i32)
;; ROUNDTRIP-NEXT: (drop
;; ROUNDTRIP-NEXT: (if (result i32)
;; ROUNDTRIP-NEXT: (i32.const 1)
;; ROUNDTRIP-NEXT: (then
;; ROUNDTRIP-NEXT: (drop
;; ROUNDTRIP-NEXT: (call $drop-unreachable)
;; ROUNDTRIP-NEXT: )
;; ROUNDTRIP-NEXT: (unreachable)
;; ROUNDTRIP-NEXT: )
;; ROUNDTRIP-NEXT: (else
;; ROUNDTRIP-NEXT: (drop
;; ROUNDTRIP-NEXT: (call $drop-unreachable)
;; ROUNDTRIP-NEXT: )
;; ROUNDTRIP-NEXT: (unreachable)
;; ROUNDTRIP-NEXT: )
;; ROUNDTRIP-NEXT: )
;; ROUNDTRIP-NEXT: )
;; ROUNDTRIP-NEXT: (drop
;; ROUNDTRIP-NEXT: (call $drop-unreachable)
;; ROUNDTRIP-NEXT: )
;; ROUNDTRIP-NEXT: (unreachable)
;; ROUNDTRIP-NEXT: )
(func $many-drop-unreachable (result i32)
;; Two drop-unreachables in an if. The drop on the if can remain, but all
;; others are removable.
(drop
(if (result i32)
(i32.const 1)
(then
(drop
(call $drop-unreachable)
)
(unreachable)
)
(else
(drop
(call $drop-unreachable)
)
(unreachable)
)
)
)
;; Two more outside the if.
(drop
(call $drop-unreachable)
)
(unreachable)
(drop
(call $drop-unreachable)
)
(unreachable)
)
)
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