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;; NOTE: Assertions have been generated by update_lit_checks.py --all-items and should not be edited.
;; NOTE: This test was ported using port_passes_tests_to_lit.py and could be cleaned up.
;; RUN: foreach %s %t wasm-opt --code-pushing -tnh -S -o - | filecheck %s
(module
;; CHECK: (type $0 (func (param i32 i32)))
;; CHECK: (type $1 (func))
;; CHECK: (func $div (param $x i32) (param $y i32)
;; CHECK-NEXT: (local $temp i32)
;; CHECK-NEXT: (block $block
;; CHECK-NEXT: (if
;; CHECK-NEXT: (local.get $y)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (return)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (local.set $temp
;; CHECK-NEXT: (i32.div_u
;; CHECK-NEXT: (i32.const 1)
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $temp)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $div (param $x i32) (param $y i32)
(local $temp i32)
(block $block
;; This division might trap (if x is 0). But with tnh we can assume that
;; won't happen, and push it past the condition.
(local.set $temp
(i32.div_u
(i32.const 1)
(local.get $x)
)
)
(if
(local.get $y)
(then
(return)
)
)
(drop
(local.get $temp)
)
)
)
;; CHECK: (func $unreachable-value
;; CHECK-NEXT: (local $x i32)
;; CHECK-NEXT: (local.tee $x
;; CHECK-NEXT: (unreachable)
;; CHECK-NEXT: )
;; CHECK-NEXT: (if
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: (then
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $unreachable-value
(local $x i32)
;; We should not push this into the if. (If we did, we'd need to refinalize
;; the block, or we'd error; instead, leave this to DCE.)
(local.set $x
(unreachable)
)
(if
(i32.const 0)
(then
(drop
(local.get $x)
)
)
)
)
)
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