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;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s --optimize-instructions -S -o - | filecheck %s
(module
;; CHECK: (func $duplicate-elimination (param $x i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.extend8_s
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.extend16_s
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $duplicate-elimination (param $x i32)
(drop (i32.extend8_s (i32.extend8_s (local.get $x))))
(drop (i32.extend16_s (i32.extend16_s (local.get $x))))
)
;; i64(x) << 56 >> 56 ==> i64.extend8_s(x)
;; i64(x) << 48 >> 48 ==> i64.extend16_s(x)
;; i64(x) << 32 >> 32 ==> i64.extend32_s(x)
;; i64.extend_i32_s(i32.wrap_i64(x)) ==> i64.extend32_s(x)
;; CHECK: (func $i64-sign-extentions (param $x i64)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i64.extend8_s
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i64.extend16_s
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i64.extend32_s
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i64.shr_s
;; CHECK-NEXT: (i64.shl
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i64.const 16)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i64.const 16)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i64.extend32_s
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $i64-sign-extentions (param $x i64)
(drop (i64.shr_s (i64.shl (local.get $x) (i64.const 56)) (i64.const 56)))
(drop (i64.shr_s (i64.shl (local.get $x) (i64.const 48)) (i64.const 48)))
(drop (i64.shr_s (i64.shl (local.get $x) (i64.const 32)) (i64.const 32)))
(drop (i64.shr_s (i64.shl (local.get $x) (i64.const 16)) (i64.const 16))) ;; skip
(drop (i64.extend_i32_s (i32.wrap_i64 (local.get $x))))
)
;; i32(x) << 24 >> 24 ==> i32.extend8_s(x)
;; i32(x) << 16 >> 16 ==> i32.extend16_s(x)
;; CHECK: (func $i32-sign-extentions (param $x i32)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.extend8_s
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.extend16_s
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.shr_s
;; CHECK-NEXT: (i32.shl
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 8)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 8)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.and
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 255)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.and
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 65535)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.shr_s
;; CHECK-NEXT: (i32.shl
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 16)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 24)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.shr_s
;; CHECK-NEXT: (i32.shl
;; CHECK-NEXT: (local.get $x)
;; CHECK-NEXT: (i32.const 24)
;; CHECK-NEXT: )
;; CHECK-NEXT: (i32.const 16)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $i32-sign-extentions (param $x i32)
(drop (i32.shr_s (i32.shl (local.get $x) (i32.const 24)) (i32.const 24)))
(drop (i32.shr_s (i32.shl (local.get $x) (i32.const 16)) (i32.const 16)))
(drop (i32.shr_s (i32.shl (local.get $x) (i32.const 8)) (i32.const 8))) ;; skip
(drop (i32.shr_u (i32.shl (local.get $x) (i32.const 24)) (i32.const 24))) ;; skip
(drop (i32.shr_u (i32.shl (local.get $x) (i32.const 16)) (i32.const 16))) ;; skip
(drop (i32.shr_s (i32.shl (local.get $x) (i32.const 16)) (i32.const 24))) ;; skip
(drop (i32.shr_s (i32.shl (local.get $x) (i32.const 24)) (i32.const 16))) ;; skip
)
)
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