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diff --git a/test/lit/passes/optimize-for-js.wast b/test/lit/passes/optimize-for-js.wast
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+++ b/test/lit/passes/optimize-for-js.wast
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+;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
+;; RUN: wasm-opt %s --optimize-for-js -all -S -o - \
+;; RUN: | filecheck %s
+
+(module
+ ;; CHECK: (func $is-power-of-2_32 (param $x i32) (result i32)
+ ;; CHECK-NEXT: (i32.and
+ ;; CHECK-NEXT: (i32.eqz
+ ;; CHECK-NEXT: (i32.eqz
+ ;; CHECK-NEXT: (local.get $x)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.eqz
+ ;; CHECK-NEXT: (i32.and
+ ;; CHECK-NEXT: (local.get $x)
+ ;; CHECK-NEXT: (i32.sub
+ ;; CHECK-NEXT: (local.get $x)
+ ;; CHECK-NEXT: (i32.const 1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $is-power-of-2_32 (param $x i32) (result i32)
+ (i32.eq
+ (i32.popcnt (local.get $x))
+ (i32.const 1)
+ )
+ )
+ ;; CHECK: (func $is-power-of-2_64 (param $x i64) (result i32)
+ ;; CHECK-NEXT: (i32.and
+ ;; CHECK-NEXT: (i32.eqz
+ ;; CHECK-NEXT: (i64.eqz
+ ;; CHECK-NEXT: (local.get $x)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i64.eqz
+ ;; CHECK-NEXT: (i64.and
+ ;; CHECK-NEXT: (local.get $x)
+ ;; CHECK-NEXT: (i64.sub
+ ;; CHECK-NEXT: (local.get $x)
+ ;; CHECK-NEXT: (i64.const 1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $is-power-of-2_64 (param $x i64) (result i32)
+ (i64.eq
+ (i64.popcnt (local.get $x))
+ (i64.const 1)
+ )
+ )
+)