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diff --git a/test/lit/passes/optimize-instructions-atomics.wast b/test/lit/passes/optimize-instructions-atomics.wast
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+++ b/test/lit/passes/optimize-instructions-atomics.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-instructions --enable-threads -S -o - | filecheck %s
+
+(module
+ (import "env" "memory" (memory $0 (shared 256 256)))
+
+ ;; CHECK: (func $x
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (i32.shr_s
+ ;; CHECK-NEXT: (i32.shl
+ ;; CHECK-NEXT: (i32.atomic.load8_u
+ ;; CHECK-NEXT: (i32.const 100)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 24)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 24)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $x
+ (drop
+ (i32.shr_s
+ (i32.shl
+ (i32.atomic.load8_u ;; can't be signed
+ (i32.const 100)
+ )
+ (i32.const 24)
+ )
+ (i32.const 24)
+ )
+ )
+ )
+)