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;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s --dce -all -S -o - | filecheck %s
;; If either try_table body or any of catch handler is reachable, the whole
;; try_table construct is reachable.
(module
;; CHECK: (tag $e)
(tag $e)
;; CHECK: (tag $e-i32 (param i32))
(tag $e-i32 (param i32))
;; CHECK: (func $foo (type $0)
;; CHECK-NEXT: )
(func $foo)
;; CHECK: (func $try_table_unreachable (type $0)
;; CHECK-NEXT: (block $catch
;; CHECK-NEXT: (try_table (catch_all $catch)
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $foo)
;; CHECK-NEXT: )
(func $try_table_unreachable
(block $catch
(try_table (catch_all $catch)
(unreachable)
)
)
(call $foo) ;; shouldn't be dce'd
)
;; CHECK: (func $catch_unreachable (type $0)
;; CHECK-NEXT: (block $tryend
;; CHECK-NEXT: (block $catch
;; CHECK-NEXT: (try_table (catch_all $catch)
;; CHECK-NEXT: (br $tryend)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $foo)
;; CHECK-NEXT: )
(func $catch_unreachable
(block $tryend
(block $catch
(try_table (catch_all $catch)
(br $tryend)
)
)
(unreachable)
)
(call $foo) ;; shouldn't be dce'd
)
;; CHECK: (func $both_unreachable (type $0)
;; CHECK-NEXT: (block $tryend
;; CHECK-NEXT: (block $catch
;; CHECK-NEXT: (try_table (catch_all $catch)
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $both_unreachable
(block $tryend
(block $catch
(try_table (catch_all $catch)
(unreachable)
)
)
(unreachable)
)
(call $foo) ;; should be dce'd
)
;; CHECK: (func $throw (type $0)
;; CHECK-NEXT: (block $label$0
;; CHECK-NEXT: (block $label$1
;; CHECK-NEXT: (throw $e)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $throw
;; All these wrapping expressions before 'throw' will be dce'd.
(drop
(block $label$0 (result externref)
(if
(i32.clz
(block $label$1 (result i32)
(throw $e)
)
)
(then
(nop)
)
)
(ref.null extern)
)
)
)
;; CHECK: (func $throw_ref (type $0)
;; CHECK-NEXT: (local $ex exnref)
;; CHECK-NEXT: (block $tryend
;; CHECK-NEXT: (local.set $ex
;; CHECK-NEXT: (block $catch (result exnref)
;; CHECK-NEXT: (try_table (catch_all_ref $catch)
;; CHECK-NEXT: (br $tryend)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (block
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (throw_ref
;; CHECK-NEXT: (local.get $ex)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $throw_ref
(local $ex exnref)
(block $tryend
(local.set $ex
(block $catch (result exnref)
(try_table (catch_all_ref $catch)
(br $tryend)
)
)
)
(drop
;; This i32.add will be dce'd.
(i32.add
(i32.const 0)
(throw_ref (local.get $ex))
)
)
)
)
)
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