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;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s --simplify-locals -all --enable-gc-nn-locals -S -o - | filecheck %s
(module
;; CHECK: (func $test-nn
;; CHECK-NEXT: (local $nn (ref any))
;; CHECK-NEXT: (local.set $nn
;; CHECK-NEXT: (ref.as_non_null
;; CHECK-NEXT: (ref.null any)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (try $try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $nn)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $nn)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $test-nn
(local $nn (ref any))
;; We should not sink this set into the try, as the spec does not allow it
;; even though we are not changing dominance (we are not changing it,
;; because there is nothing that can throw in the try's body that can reach
;; the catch_all before the local.set that we move there). See
;; https://github.com/WebAssembly/function-references/issues/44#issuecomment-1083146887
(local.set $nn
(ref.as_non_null
(ref.null any)
)
)
(try
(do
(drop
(local.get $nn)
)
)
(catch_all
(drop
(local.get $nn)
)
)
)
)
;; CHECK: (func $test-nullable
;; CHECK-NEXT: (local $nullable anyref)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (try $try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (local.set $nullable
;; CHECK-NEXT: (ref.as_non_null
;; CHECK-NEXT: (ref.null any)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $nullable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $test-nullable
;; As above, but now the local is nullable. Here we *can* optimize the set
;; into the try.
(local $nullable (ref null any))
(local.set $nullable
(ref.as_non_null
(ref.null any)
)
)
(try
(do
(drop
(local.get $nullable)
)
)
(catch_all
(drop
(local.get $nullable)
)
)
)
)
;; CHECK: (func $test-nested-nn
;; CHECK-NEXT: (local $nullable anyref)
;; CHECK-NEXT: (local $nn (ref any))
;; CHECK-NEXT: (local.set $nullable
;; CHECK-NEXT: (block $block (result (ref any))
;; CHECK-NEXT: (local.set $nn
;; CHECK-NEXT: (ref.as_non_null
;; CHECK-NEXT: (ref.null any)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (ref.as_non_null
;; CHECK-NEXT: (ref.null any)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (try $try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $nullable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $nullable)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $nn)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $test-nested-nn
;; As above, the set we want to move is nullable, but now it has a nested
;; value that is a non-nullable set. That should also prevent us from
;; moving it.
(local $nullable (ref null any))
(local $nn (ref any))
(local.set $nullable
(block (result (ref any))
(local.set $nn
(ref.as_non_null
(ref.null any)
)
)
(ref.as_non_null
(ref.null any)
)
)
)
(try
(do
(drop
(local.get $nullable)
)
)
(catch_all
(drop
(local.get $nullable)
)
(drop
(local.get $nn)
)
)
)
)
)
|
