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|
;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s --remove-unused-names --merge-blocks -all -S -o - \
;; RUN: | filecheck %s
;;
;; --remove-unused-names lets --merge-blocks assume blocks without names have no
;; branch targets.
(module
(type $anyref_=>_none (func (param anyref)))
;; CHECK: (type $array (array (mut i32)))
;; CHECK: (type $struct (struct (field (mut i32))))
(type $struct (struct (field (mut i32))))
(type $array (array (mut i32)))
;; CHECK: (func $br_on_to_drop (type $4)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (block $label$1 (result i31ref)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (br_on_cast $label$1 nullref (ref none)
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $br_on_to_drop
(nop) ;; ensure a block at the function level
(drop
(block $label$1 (result (ref null i31)) ;; this block type must stay, we
;; cannot remove it due to the br_on
(drop
(br_on_cast $label$1 anyref (ref i31)
(ref.null any)
)
)
(ref.null i31) ;; this must not end up dropped
)
)
)
;; CHECK: (func $struct.set (type $5) (param $struct (ref null $struct))
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1234)
;; CHECK-NEXT: )
;; CHECK-NEXT: (struct.set $struct 0
;; CHECK-NEXT: (local.get $struct)
;; CHECK-NEXT: (i32.const 5)
;; CHECK-NEXT: )
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
(func $struct.set (param $struct (ref null $struct))
(block
(nop)
(struct.set $struct 0
(block (result (ref null $struct))
(drop (i32.const 1234))
(local.get $struct)
)
(i32.const 5)
)
(nop)
)
)
;; CHECK: (func $struct.get (type $5) (param $struct (ref null $struct))
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1234)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (struct.get $struct 0
;; CHECK-NEXT: (local.get $struct)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
(func $struct.get (param $struct (ref null $struct))
(block
(nop)
(drop
(struct.get $struct 0
(block (result (ref null $struct))
(drop (i32.const 1234))
(local.get $struct)
)
)
)
(nop)
)
)
;; CHECK: (func $array.set (type $3) (param $foo (ref $array))
;; CHECK-NEXT: (local $bar (ref null $array))
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (array.set $array
;; CHECK-NEXT: (local.tee $bar
;; CHECK-NEXT: (local.get $foo)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: (i32.const 37)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $array.set (param $foo (ref $array))
(local $bar (ref null $array))
(array.set $array
(block $block (result (ref null $array))
(nop)
(nop)
(nop)
;; Side effects in the first item on the array.set do not prevent moving
;; the nops outside.
(local.tee $bar
(local.get $foo)
)
)
(i32.const 0)
(i32.const 37)
)
)
;; CHECK: (func $array.set-no-1 (type $3) (param $foo (ref $array))
;; CHECK-NEXT: (local $bar i32)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (array.set $array
;; CHECK-NEXT: (local.get $foo)
;; CHECK-NEXT: (local.tee $bar
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 37)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $array.set-no-1 (param $foo (ref $array))
(local $bar i32)
(array.set $array
(local.get $foo)
(block $block (result i32)
(nop)
(nop)
(nop)
;; Side effects in the second item do prevent optimizations, currently.
(local.tee $bar
(i32.const 0)
)
)
(i32.const 37)
)
)
;; CHECK: (func $array.set-no-2 (type $3) (param $foo (ref $array))
;; CHECK-NEXT: (local $bar i32)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: (array.set $array
;; CHECK-NEXT: (local.get $foo)
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: (local.tee $bar
;; CHECK-NEXT: (i32.const 37)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $array.set-no-2 (param $foo (ref $array))
(local $bar i32)
(array.set $array
(local.get $foo)
(i32.const 0)
(block $block (result i32)
(nop)
(nop)
(nop)
;; Side effects in the third item do prevent optimizations, currently.
(local.tee $bar
(i32.const 37)
)
)
)
)
;; CHECK: (func $if-condition (type $6) (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (if (result i32)
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
;; CHECK-NEXT: (else
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 4)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 5)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $if-condition (result i32)
;; Content can be moved out of an if condition, but not anywhere else.
(if (result i32)
(block (result i32)
(drop (i32.const 0))
(i32.const 1)
)
(then
(block (result i32)
(drop (i32.const 2))
(i32.const 3)
)
)
(else
(block (result i32)
(drop (i32.const 4))
(i32.const 5)
)
)
)
)
;; CHECK: (func $subsequent-children (type $1) (param $x i32) (param $y i32) (param $z i32) (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $subsequent-children
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: (i32.const 4)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $subsequent-children (param $x i32) (param $y i32) (param $z i32) (result i32)
;; Both of the calls to helper can be moved outside. Those calls remain in
;; order after doing so, so there is no problem, and none of them are moved
;; across anything with side effects. This leaves only consts in the call to
;; $subsequent-children.
(call $subsequent-children
(block (result i32)
(drop (call $helper (i32.const 0)))
(i32.const 1)
)
(i32.const 2)
(block (result i32)
(drop (call $helper (i32.const 3)))
(i32.const 4)
)
)
)
;; CHECK: (func $subsequent-children-1 (type $1) (param $x i32) (param $y i32) (param $z i32) (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $subsequent-children-1
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: (block (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 4)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $subsequent-children-1 (param $x i32) (param $y i32) (param $z i32) (result i32)
(call $subsequent-children-1
(block (result i32)
(drop (call $helper (i32.const 0)))
(call $helper (i32.const 1)) ;; Compared to before, this is now a call, so
;; it has side effects, and the call with arg
;; 3 cannot be moved past it.
)
(i32.const 2)
(block (result i32)
(drop (call $helper (i32.const 3)))
(i32.const 4)
)
)
)
;; CHECK: (func $subsequent-children-2 (type $1) (param $x i32) (param $y i32) (param $z i32) (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $subsequent-children-2
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (block (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 4)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $subsequent-children-2 (param $x i32) (param $y i32) (param $z i32) (result i32)
(call $subsequent-children-2
(block (result i32)
(drop (call $helper (i32.const 0)))
(call $helper (i32.const 1))
)
;; Similar to the above, but with the main call's last two arguments flipped.
;; This should not have an effect on the output: we still can't pull out the
;; call with arg 3.
(block (result i32)
(drop (call $helper (i32.const 3)))
(i32.const 4)
)
(i32.const 2)
)
)
;; CHECK: (func $subsequent-children-3 (type $1) (param $x i32) (param $y i32) (param $z i32) (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $subsequent-children-3
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (block (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 4)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $subsequent-children-3 (param $x i32) (param $y i32) (param $z i32) (result i32)
(call $subsequent-children-3
(block (result i32)
(drop (i32.const 0)) ;; Similar to the above, but this is just a const now
;; and not a call. We still can't pull out the call
;; with arg 3, due to the call with arg 1.
(call $helper (i32.const 1))
)
(block (result i32)
(drop (call $helper (i32.const 3)))
(i32.const 4)
)
(i32.const 2)
)
)
;; CHECK: (func $subsequent-children-4 (type $1) (param $x i32) (param $y i32) (param $z i32) (result i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $helper
;; CHECK-NEXT: (i32.const 3)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $subsequent-children-4
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (i32.const 4)
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $subsequent-children-4 (param $x i32) (param $y i32) (param $z i32) (result i32)
(call $subsequent-children-4
(block (result i32)
(drop (i32.const 0))
;; Similar to the above, but remove the call on arg 1 as well. Now we *can*
;; pull out the call with arg 3.
(i32.const 1)
)
(block (result i32)
(drop (call $helper (i32.const 3)))
(i32.const 4)
)
(i32.const 2)
)
)
;; CHECK: (func $toplevel (type $4)
;; CHECK-NEXT: (block $label
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br $label)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $toplevel
;; Test we can remove a block value even when the drop is at the toplevel of
;; a function.
(drop
(block $label (result i32)
(br $label
(i32.const 42)
)
)
)
)
;; CHECK: (func $helper (type $7) (param $x i32) (result i32)
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
(func $helper (param $x i32) (result i32)
(unreachable)
)
)
|
