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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 -S -o - | filecheck %s
(module
;; CHECK: (tag $e-i32 (param i32))
(tag $e-i32 (param i32))
;; CHECK: (func $foo (type $3) (param $0 i32) (param $1 i32)
;; CHECK-NEXT: )
(func $foo (param i32 i32))
;; CHECK: (func $pop-cannot-be-sinked (type $0)
;; CHECK-NEXT: (local $0 i32)
;; CHECK-NEXT: (try
;; CHECK-NEXT: (do
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $e-i32
;; CHECK-NEXT: (local.set $0
;; CHECK-NEXT: (pop i32)
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $foo
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $pop-cannot-be-sinked (local $0 i32)
(try
(do)
(catch $e-i32
;; This (local.set $0) of (pop i32) cannot be sunk to (local.get $0)
;; below, because the pop should follow right after 'catch'.
(local.set $0 (pop i32))
(call $foo
(i32.const 3)
(local.get $0)
)
)
)
)
;; CHECK: (func $pop-within-catch-can-be-sinked (type $0)
;; CHECK-NEXT: (local $0 i32)
;; CHECK-NEXT: (try
;; CHECK-NEXT: (do
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (call $foo
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: (try (result i32)
;; CHECK-NEXT: (do
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $e-i32
;; CHECK-NEXT: (pop i32)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $pop-within-catch-can-be-sinked (local $0 i32)
(try
(do)
(catch_all
;; This whole 'try' body can be sinked to eliminate local.set /
;; local.get. Even though it contains a pop, it is enclosed within
;; try-catch, so it is OK.
(local.set $0
(try (result i32)
(do (i32.const 0))
(catch $e-i32 (pop i32))
)
)
(call $foo
(i32.const 3)
(local.get $0)
)
)
)
)
;; CHECK: (func $bar (type $1) (result i32)
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
(func $bar (result i32) (i32.const 3))
;; CHECK: (func $call-cannot-be-sinked-into-try (type $0)
;; CHECK-NEXT: (local $0 i32)
;; CHECK-NEXT: (local.set $0
;; CHECK-NEXT: (call $bar)
;; CHECK-NEXT: )
;; CHECK-NEXT: (try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $e-i32
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (pop i32)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $call-cannot-be-sinked-into-try (local $0 i32)
(drop
;; This local.tee should NOT be sinked into 'try' below, because it may
;; throw
(local.tee $0 (call $bar))
)
(try
(do
(drop (local.get $0))
)
(catch $e-i32
(drop (pop i32))
)
)
)
;; CHECK: (func $non-call-can-be-sinked-into-try (type $0)
;; CHECK-NEXT: (local $0 i32)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $e-i32
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (pop i32)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $non-call-can-be-sinked-into-try (local $0 i32)
(drop
;; This local.tee can be sinked into 'try' below, because it cannot throw
(local.tee $0 (i32.const 3))
)
(try
(do
(drop (local.get $0))
)
(catch $e-i32
(drop (pop i32))
)
)
)
;; CHECK: (func $return-call-can-be-sinked-into-try (type $1) (result i32)
;; CHECK-NEXT: (local $0 i32)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (try (result i32)
;; CHECK-NEXT: (do
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (if (result i32)
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return_call $return-call-can-be-sinked-into-try)
;; CHECK-NEXT: )
;; CHECK-NEXT: (else
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $e-i32
;; CHECK-NEXT: (pop i32)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $return-call-can-be-sinked-into-try (result i32)
(local $0 i32)
(drop
;; This cannot throw either, so it can be sunk. Wrap the return_call in an
;; if so the whole expression does not return unconditionally.
(local.tee $0
(if (result i32)
(i32.const 0)
(then
(return_call $return-call-can-be-sinked-into-try)
)
(else
(i32.const 1)
)
)
)
)
(try (result i32)
(do
(drop (local.get $0))
(i32.const 0)
)
(catch $e-i32
(pop i32)
)
)
)
)
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