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(module
(func $contrast ;; check for tee and structure sinking
(local $x i32)
(local $y i32)
(local $z i32)
(local $a i32)
(local $b i32)
(set_local $x (i32.const 1))
(if (get_local $x) (nop))
(if (get_local $x) (nop))
(set_local $y (if (result i32) (i32.const 2) (i32.const 3) (i32.const 4)))
(drop (get_local $y))
(set_local $z (block (result i32) (i32.const 5)))
(drop (get_local $z))
(if (i32.const 6)
(set_local $a (i32.const 7))
(set_local $a (i32.const 8))
)
(drop (get_local $a))
(block $val
(if (i32.const 10)
(block
(set_local $b (i32.const 11))
(br $val)
)
)
(set_local $b (i32.const 12))
)
(drop (get_local $b))
)
(func $no-unreachable
(local $x i32)
(drop
(tee_local $x
(unreachable)
)
)
)
(func $implicit-trap-and-global-effects
(local $var$0 i32)
(set_local $var$0
(i32.trunc_u/f64
(f64.const -nan:0xfffffffffffc3) ;; this implicit trap will actually trap
)
)
(f32.store align=1 ;; and if we move it across this store, the store will execute, having global side effects
(i32.const 22)
(f32.const 154)
)
(drop
(get_local $var$0)
)
)
(func $implicit-trap-and-local-effects
(local $var$0 i32)
(local $other i32)
(set_local $var$0
(i32.trunc_u/f64
(f64.const -nan:0xfffffffffffc3) ;; this implicit trap will actually trap
)
)
(set_local $other (i32.const 100)) ;; but it's fine to move it across a local effect, that vanishes anyhow
(drop
(get_local $var$0)
)
(if (i32.const 1)
(drop
(get_local $other)
)
)
)
(func $multi-pass-get-equivs-right (param $var$0 i32) (param $var$1 i32) (result f64)
(local $var$2 i32)
(set_local $var$2
(get_local $var$0)
)
(i32.store
(get_local $var$2)
(i32.const 1)
)
(f64.promote/f32
(f32.load
(get_local $var$2)
)
)
)
(func $if-value-structure-equivalent (param $x i32) (result i32)
(local $y i32)
(if (i32.const 1)
(set_local $x (i32.const 2))
(block
(set_local $y (get_local $x))
(set_local $x (get_local $y))
)
)
(get_local $x)
)
)
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