test/lit/passes/optimize-instructions-strings.wast

;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s -all --optimize-instructions -S -o - | filecheck %s

(module
  ;; CHECK:      (func $string.checks (type $0) (param $a (ref string)) (param $b (ref string))
  ;; CHECK-NEXT:  (drop
  ;; CHECK-NEXT:   (string.eq
  ;; CHECK-NEXT:    (local.get $a)
  ;; CHECK-NEXT:    (local.get $b)
  ;; CHECK-NEXT:   )
  ;; CHECK-NEXT:  )
  ;; CHECK-NEXT:  (drop
  ;; CHECK-NEXT:   (i32.and
  ;; CHECK-NEXT:    (string.compare
  ;; CHECK-NEXT:     (local.get $a)
  ;; CHECK-NEXT:     (local.get $b)
  ;; CHECK-NEXT:    )
  ;; CHECK-NEXT:    (i32.const 1)
  ;; CHECK-NEXT:   )
  ;; CHECK-NEXT:  )
  ;; CHECK-NEXT: )
  (func $string.checks (param $a (ref string)) (param $b (ref string))
    ;; Equals returns 0/1, so the &1 operation can be removed.
    (drop
      (i32.and
        (string.eq
          (local.get $a)
          (local.get $b)
        )
        (i32.const 1)
      )
    )
    ;; Compare returns -1/0/1, so we cannot change anything here.
    (drop
      (i32.and
        (string.compare
          (local.get $a)
          (local.get $b)
        )
        (i32.const 1)
      )
    )
  )
)