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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 body or catch body is reachable, the whole try 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: (nop)
;; CHECK-NEXT: )
(func $foo)
;; CHECK: (func $try_unreachable (type $0)
;; CHECK-NEXT: (try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $foo)
;; CHECK-NEXT: )
(func $try_unreachable
(try
(do
(unreachable)
)
(catch_all)
)
(call $foo) ;; shouldn't be dce'd
)
;; CHECK: (func $catch_unreachable (type $0)
;; CHECK-NEXT: (try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $foo)
;; CHECK-NEXT: )
(func $catch_unreachable
(try
(do)
(catch_all
(unreachable)
)
)
(call $foo) ;; shouldn't be dce'd
)
;; CHECK: (func $both_unreachable (type $0)
;; CHECK-NEXT: (try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $both_unreachable
(try
(do
(unreachable)
)
(catch_all
(unreachable)
)
)
(call $foo) ;; should be dce'd
)
;; CHECK: (func $rethrow (type $0)
;; CHECK-NEXT: (try $l0
;; CHECK-NEXT: (do
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $e
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (rethrow $l0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $rethrow
(try $l0
(do)
(catch $e
(drop
;; This i32.add will be dce'd
(i32.add
(i32.const 0)
(rethrow $l0)
)
)
)
)
)
;; CHECK: (func $call-pop-catch (type $0)
;; CHECK-NEXT: (local $0 i32)
;; CHECK-NEXT: (block $label
;; CHECK-NEXT: (try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $e-i32
;; CHECK-NEXT: (local.set $0
;; CHECK-NEXT: (pop i32)
;; CHECK-NEXT: )
;; CHECK-NEXT: (block
;; CHECK-NEXT: (block
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br $label)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $call-pop-catch
(block $label
(try
(do
(nop)
)
(catch $e-i32
;; This call is unreachable and can be removed. The pop, however, must
;; be carefully handled while we do so, to not break validation.
(call $helper-i32-i32
(pop i32)
(br $label)
)
(nop)
)
)
)
)
;; CHECK: (func $helper-i32-i32 (type $2) (param $0 i32) (param $1 i32)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
(func $helper-i32-i32 (param $0 i32) (param $1 i32)
(nop)
)
)
|
