;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s --code-pushing -all -S -o - | filecheck %s
;; The tests in this file test EffectAnalyzer, which is used by CodePushing.
(module
;; CHECK: (tag $e (param i32))
(tag $e (param i32))
;; CHECK: (func $cannot-push-past-call (type $0)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $out
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $cannot-push-past-call)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $out
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $cannot-push-past-call
(local $x i32)
(block $out
;; This local.set cannot be pushed down, because the call below can throw
(local.set $x (i32.const 1))
(call $cannot-push-past-call)
(drop (i32.const 1))
(br_if $out (i32.const 2))
(drop (local.get $x))
)
)
;; CHECK: (func $cannot-push-past-throw (type $0)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $out
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (throw $e
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $out
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $cannot-push-past-throw
(local $x i32)
(block $out
;; This local.set cannot be pushed down, because there is 'throw' below.
;; This pass only pushes past conditional control flow atm.
(local.set $x (i32.const 1))
(throw $e (i32.const 0))
(drop (i32.const 1))
(br_if $out (i32.const 2))
(drop (local.get $x))
)
)
;; CHECK: (func $can-push-past-try (type $0)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $out
;; CHECK-NEXT: (try $try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (throw $e
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $out
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $can-push-past-try
(local $x i32)
(block $out
;; This local.set can be pushed down, because the 'throw' below is going
;; to be caught by the inner catch_all
(local.set $x (i32.const 1))
(try
(do
(throw $e (i32.const 0))
)
(catch_all)
)
(drop (i32.const 1))
(br_if $out (i32.const 2))
(drop (local.get $x))
)
)
;; CHECK: (func $foo (type $0)
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
(func $foo)
;; CHECK: (func $cannot-push-past-try (type $0)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $out
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (try $try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (call $foo)
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch $e
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (pop i32)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $out
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $cannot-push-past-try
(local $x i32)
(block $out
;; This local.set cannot be pushed down, because the exception thrown by
;; 'call $foo' below may not be caught by 'catch $e'
(local.set $x (i32.const 1))
(try
(do
(call $foo)
)
(catch $e
(drop (pop i32))
)
)
(drop (i32.const 1))
(br_if $out (i32.const 2))
(drop (local.get $x))
)
)
;; CHECK: (func $cannot-push-past-rethrow-within-catch (type $0)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $out
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (try $l0
;; CHECK-NEXT: (do
;; CHECK-NEXT: (throw $e
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (rethrow $l0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $out
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $cannot-push-past-rethrow-within-catch
(local $x i32)
(block $out
;; This local.set cannot be pushed down, because there is 'rethrow' within
;; the inner catch_all
(local.set $x (i32.const 1))
(try $l0
(do
(throw $e (i32.const 0))
)
(catch_all
(rethrow $l0)
)
)
(drop (i32.const 1))
(br_if $out (i32.const 2))
(drop (local.get $x))
)
)
;; CHECK: (func $can-push-past-try-delegate (type $0)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $out
;; CHECK-NEXT: (try $l
;; CHECK-NEXT: (do
;; CHECK-NEXT: (try $try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (throw $e
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (delegate $l)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $out
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $can-push-past-try-delegate
(local $x i32)
(block $out
;; This local.set can be pushed down, because the 'throw' below is going
;; to be caught by the catch_all
(local.set $x (i32.const 1))
(try $l
(do
(try
(do
(throw $e (i32.const 0))
)
(delegate $l)
)
)
(catch_all)
)
(drop (i32.const 1))
(br_if $out (i32.const 2))
(drop (local.get $x))
)
)
;; CHECK: (func $cannot-push-past-try-delegate (type $0)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $out
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (try $l
;; CHECK-NEXT: (do
;; CHECK-NEXT: (try $try
;; CHECK-NEXT: (do
;; CHECK-NEXT: (throw $e
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (delegate 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (catch_all
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (br_if $out
;; CHECK-NEXT: (i32.const 2)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $cannot-push-past-try-delegate
(local $x i32)
(block $out
;; This local.set cannot be pushed down, because the 'delegate' bypasses
;; the catch_all, making the whole 'try' throwable.
(local.set $x (i32.const 1))
(try $l
(do
(try
(do
(throw $e (i32.const 0))
)
(delegate 2)
)
)
(catch_all)
)
(drop (i32.const 1))
(br_if $out (i32.const 2))
(drop (local.get $x))
)
)
;; CHECK: (func $can-push-past-conditional-throw (type $1) (param $param i32)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $block
;; CHECK-NEXT: (if
;; CHECK-NEXT: (local.get $param)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (throw $e
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $can-push-past-conditional-throw (param $param i32)
(local $x i32)
(block $block
;; We can push past an if containing a throw. The if is conditional
;; control flow, which is what we look for in this optimization, and a
;; throw is like a break - it will jump out of the current block - so we
;; can push the set past it, as the set is only needed in this block.
(local.set $x (i32.const 1))
(if
(local.get $param)
(then
(throw $e (i32.const 0))
)
)
(drop (local.get $x))
)
)
;; CHECK: (func $cannot-push-past-conditional-throw-extra-use (type $1) (param $param i32)
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (block $block
;; CHECK-NEXT: (local.set $x
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: )
;; CHECK-NEXT: (if
;; CHECK-NEXT: (local.get $param)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (throw $e
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $cannot-push-past-conditional-throw-extra-use (param $param i32)
(local $x i32)
;; As above, but now there is another local.get outside of the block. That
;; means the local.set cannot be pushed to a place it might not execute.
(block $block
(local.set $x (i32.const 1))
(if
(local.get $param)
(then
(throw $e (i32.const 0))
)
)
(drop (local.get $x))
)
(drop (local.get $x))
)
)