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|
;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s -all --dae -S -o - | filecheck %s
(module
;; CHECK: (type $"{}" (sub (struct)))
(type $"{}" (sub (struct)))
;; CHECK: (type $"return_{}" (func (result (ref $"{}"))))
(type $"return_{}" (func (result (ref $"{}"))))
;; CHECK: (type $"{i32}" (sub $"{}" (struct (field i32))))
(type $"{i32}" (sub $"{}" (struct (field i32))))
;; CHECK: (type $"{i32_f32}" (sub $"{i32}" (struct (field i32) (field f32))))
(type $"{i32_f32}" (sub $"{i32}" (struct (field i32) (field f32))))
;; CHECK: (type $"{i32_i64}" (sub $"{i32}" (struct (field i32) (field i64))))
(type $"{i32_i64}" (sub $"{i32}" (struct (field i32) (field i64))))
(table 1 1 funcref)
;; We cannot refine the return type if nothing is actually returned.
;; CHECK: (func $refine-return-no-return (type $0) (result anyref)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (call $refine-return-no-return)
;; CHECK-NEXT: )
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
(func $refine-return-no-return (result anyref)
;; Call this function, so that we attempt to optimize it. Note that we do not
;; just drop the result, as that would cause the drop optimizations to kick
;; in.
(local $temp anyref)
(local.set $temp (call $refine-return-no-return))
(unreachable)
)
;; We cannot refine the return type if it is already the best it can be.
;; CHECK: (func $refine-return-no-refining (type $0) (result anyref)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local $any anyref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (call $refine-return-no-refining)
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.get $any)
;; CHECK-NEXT: )
(func $refine-return-no-refining (result anyref)
(local $temp anyref)
(local $any anyref)
(local.set $temp (call $refine-return-no-refining))
(local.get $any)
)
;; Refine the return type based on the value flowing out.
;; CHECK: (func $refine-return-flow (type $4) (result i31ref)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local $i31 i31ref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (call $refine-return-flow)
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
(func $refine-return-flow (result anyref)
(local $temp anyref)
(local $i31 (ref null i31))
(local.set $temp (call $refine-return-flow))
(local.get $i31)
)
;; CHECK: (func $call-refine-return-flow (type $4) (result i31ref)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (call $call-refine-return-flow)
;; CHECK-NEXT: )
;; CHECK-NEXT: (if (result i31ref)
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (call $refine-return-flow)
;; CHECK-NEXT: )
;; CHECK-NEXT: (else
;; CHECK-NEXT: (call $refine-return-flow)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $call-refine-return-flow (result anyref)
(local $temp anyref)
(local.set $temp (call $call-refine-return-flow))
;; After refining the return value of the above function, refinalize will
;; update types here, which will lead to updating the if, and then the entire
;; function's return value.
(if (result anyref)
(i32.const 1)
(then
(call $refine-return-flow)
)
(else
(call $refine-return-flow)
)
)
)
;; Refine the return type based on a return.
;; CHECK: (func $refine-return-return (type $4) (result i31ref)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local $i31 i31ref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (call $refine-return-return)
;; CHECK-NEXT: )
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $refine-return-return (result anyref)
(local $temp anyref)
(local $i31 (ref null i31))
(local.set $temp (call $refine-return-return))
(return (local.get $i31))
)
;; Refine the return type based on multiple values.
;; CHECK: (func $refine-return-many (type $4) (result i31ref)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local $i31 i31ref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (call $refine-return-many)
;; CHECK-NEXT: )
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
(func $refine-return-many (result anyref)
(local $temp anyref)
(local $i31 (ref null i31))
(local.set $temp (call $refine-return-many))
(if
(i32.const 1)
(then
(return (local.get $i31))
)
)
(if
(i32.const 2)
(then
(return (local.get $i31))
)
)
(local.get $i31)
)
;; CHECK: (func $refine-return-many-lub (type $7) (result eqref)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local $i31 i31ref)
;; CHECK-NEXT: (local $struct structref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (call $refine-return-many-lub)
;; CHECK-NEXT: )
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $struct)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
(func $refine-return-many-lub (result anyref)
(local $temp anyref)
(local $i31 (ref null i31))
(local $struct (ref null struct))
(local.set $temp (call $refine-return-many-lub))
(if
(i32.const 1)
(then
(return (local.get $i31))
)
)
(if
(i32.const 2)
;; The refined return type has to be a supertype of struct.
(then
(return (local.get $struct))
)
)
(local.get $i31)
)
;; CHECK: (func $refine-return-many-lub-2 (type $7) (result eqref)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local $i31 i31ref)
;; CHECK-NEXT: (local $struct structref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (call $refine-return-many-lub-2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.get $struct)
;; CHECK-NEXT: )
(func $refine-return-many-lub-2 (result anyref)
(local $temp anyref)
(local $i31 (ref null i31))
(local $struct (ref null struct))
(local.set $temp (call $refine-return-many-lub-2))
(if
(i32.const 1)
(then
(return (local.get $i31))
)
)
(if
(i32.const 2)
(then
(return (local.get $i31))
)
)
;; The refined return type has to be a supertype of struct.
(local.get $struct)
)
;; We can refine the return types of tuples.
;; CHECK: (func $refine-return-tuple (type $8) (result i31ref i32)
;; CHECK-NEXT: (local $temp anyref)
;; CHECK-NEXT: (local $i31 i31ref)
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (tuple.extract 2 0
;; CHECK-NEXT: (call $refine-return-tuple)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (tuple.make 2
;; CHECK-NEXT: (local.get $i31)
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $refine-return-tuple (result anyref i32)
(local $temp anyref)
(local $i31 (ref null i31))
(local.set $temp
(tuple.extract 2 0
(call $refine-return-tuple)
)
)
(tuple.make 2
(local.get $i31)
(i32.const 1)
)
)
;; This function does a return call of the one after it. The one after it
;; returns a ref.func of this one. They both begin by returning a funcref;
;; after refining the return type of the second function, it will have a more
;; specific type (which is ok as subtyping is allowed with tail calls).
;; CHECK: (func $do-return-call (type $6) (result funcref)
;; CHECK-NEXT: (return_call $return-ref-func)
;; CHECK-NEXT: )
(func $do-return-call (result funcref)
(return_call $return-ref-func)
)
;; CHECK: (func $return-ref-func (type $9) (result (ref $6))
;; CHECK-NEXT: (ref.func $do-return-call)
;; CHECK-NEXT: )
(func $return-ref-func (result funcref)
(ref.func $do-return-call)
)
;; Show that we can optimize the return type of a function that does a tail
;; call.
;; CHECK: (func $tail-callee (type $"return_{}") (result (ref $"{}"))
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
(func $tail-callee (result (ref $"{}"))
(unreachable)
)
;; CHECK: (func $tail-caller-yes (type $"return_{}") (result (ref $"{}"))
;; CHECK-NEXT: (return_call $tail-callee)
;; CHECK-NEXT: )
(func $tail-caller-yes (result anyref)
;; This function's return type can be refined because of this call, whose
;; target's return type is more specific than anyref.
(return_call $tail-callee)
)
;; CHECK: (func $tail-caller-no (type $0) (result anyref)
;; CHECK-NEXT: (local $any anyref)
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $any)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (return_call $tail-callee)
;; CHECK-NEXT: )
(func $tail-caller-no (result anyref)
(local $any anyref)
;; This function's return type cannot be refined because of another return
;; whose type prevents it.
(if (i32.const 1)
(then
(return (local.get $any))
)
)
(return_call $tail-callee)
)
;; CHECK: (func $tail-call-caller (type $5)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $tail-caller-yes)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $tail-caller-no)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $tail-call-caller
;; Call the functions to cause optimization to happen.
(drop
(call $tail-caller-yes)
)
(drop
(call $tail-caller-no)
)
)
;; As above, but with an indirect tail call.
;; CHECK: (func $tail-callee-indirect (type $"return_{}") (result (ref $"{}"))
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
(func $tail-callee-indirect (result (ref $"{}"))
(unreachable)
)
;; CHECK: (func $tail-caller-indirect-yes (type $"return_{}") (result (ref $"{}"))
;; CHECK-NEXT: (return_call_indirect $0 (type $"return_{}")
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $tail-caller-indirect-yes (result anyref)
(return_call_indirect (type $"return_{}") (i32.const 0))
)
;; CHECK: (func $tail-caller-indirect-no (type $0) (result anyref)
;; CHECK-NEXT: (local $any anyref)
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $any)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (return_call_indirect $0 (type $"return_{}")
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $tail-caller-indirect-no (result anyref)
(local $any anyref)
(if (i32.const 1)
(then
(return (local.get $any))
)
)
(return_call_indirect (type $"return_{}") (i32.const 0))
)
;; CHECK: (func $tail-call-caller-indirect (type $5)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $tail-caller-indirect-yes)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $tail-caller-indirect-no)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $tail-call-caller-indirect
(drop
(call $tail-caller-indirect-yes)
)
(drop
(call $tail-caller-indirect-no)
)
)
;; As above, but with a tail call by function reference.
;; CHECK: (func $tail-callee-call_ref (type $"return_{}") (result (ref $"{}"))
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
(func $tail-callee-call_ref (result (ref $"{}"))
(unreachable)
)
;; CHECK: (func $tail-caller-call_ref-yes (type $"return_{}") (result (ref $"{}"))
;; CHECK-NEXT: (local $"return_{}" (ref null $"return_{}"))
;; CHECK-NEXT: (return_call_ref $"return_{}"
;; CHECK-NEXT: (local.get $"return_{}")
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $tail-caller-call_ref-yes (result anyref)
(local $"return_{}" (ref null $"return_{}"))
(return_call_ref $"return_{}" (local.get $"return_{}"))
)
;; CHECK: (func $tail-caller-call_ref-no (type $0) (result anyref)
;; CHECK-NEXT: (local $any anyref)
;; CHECK-NEXT: (local $"return_{}" (ref null $"return_{}"))
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (local.get $any)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (return_call_ref $"return_{}"
;; CHECK-NEXT: (local.get $"return_{}")
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $tail-caller-call_ref-no (result anyref)
(local $any anyref)
(local $"return_{}" (ref null $"return_{}"))
(if (i32.const 1)
(then
(return (local.get $any))
)
)
(return_call_ref $"return_{}" (local.get $"return_{}"))
)
;; CHECK: (func $tail-caller-call_ref-unreachable (type $0) (result anyref)
;; CHECK-NEXT: (block ;; (replaces unreachable CallRef we can't emit)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $tail-caller-call_ref-unreachable (result anyref)
;; An unreachable means there is no function signature to even look at. We
;; should not hit an assertion on such things.
(return_call_ref $"return_{}" (unreachable))
)
;; CHECK: (func $tail-call-caller-call_ref (type $5)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $tail-caller-call_ref-yes)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $tail-caller-call_ref-no)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $tail-caller-call_ref-unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $tail-call-caller-call_ref
(drop
(call $tail-caller-call_ref-yes)
)
(drop
(call $tail-caller-call_ref-no)
)
(drop
(call $tail-caller-call_ref-unreachable)
)
)
;; CHECK: (func $update-null (type $10) (param $x i32) (param $y i32) (result (ref null $"{i32}"))
;; CHECK-NEXT: (if
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (if
;; CHECK-NEXT: (local.get $y)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return
;; CHECK-NEXT: (struct.new_default $"{i32_f32}")
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (else
;; CHECK-NEXT: (return
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (else
;; CHECK-NEXT: (return
;; CHECK-NEXT: (struct.new_default $"{i32_i64}")
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $update-null (param $x i32) (param $y i32) (result anyref)
;; Of the three returns here, the null can be updated, and the LUB is
;; determined by the other two, and is their shared parent $"{}."
(if
(local.get $x)
(then
(if
(local.get $y)
(then
(return (struct.new_default $"{i32_f32}"))
)
(else
(return (ref.null any))
)
)
)
(else
(return (struct.new_default $"{i32_i64}"))
)
)
)
;; CHECK: (func $call-update-null (type $0) (result anyref)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (call $update-null
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $update-null
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $call-update-null (result anyref)
;; Call $update-null so it gets optimized. (Call it with various values so
;; that other opts do not inline the constants.)
(drop
(call $update-null
(i32.const 0)
(i32.const 1)
)
)
(call $update-null
(i32.const 1)
(i32.const 0)
)
)
)
|
