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delete.js
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61 lines (54 loc) · 1.7 KB
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
// RUN: %hermes -hermes-parser -dump-ir %s -O0 | %FileCheck %s --match-full-lines
// RUN: %hermes -hermes-parser -dump-ir %s -O
function sink() {}
var x;
//CHECK-LABEL:function delete_parameter(p)
//CHECK-NEXT:frame = [p]
//CHECK-NEXT: %BB0:
//CHECK-NEXT: %0 = StoreFrameInst %p, [p]
//CHECK-NEXT: %1 = ReturnInst false : boolean
//CHECK-NEXT: %BB1:
//CHECK-NEXT: %2 = ReturnInst undefined : undefined
//CHECK-NEXT:function_end
function delete_parameter(p) {
return (delete p);
}
//CHECK-LABEL:function delete_literal()
//CHECK-NEXT:frame = []
//CHECK-NEXT: %BB0:
//CHECK-NEXT: %0 = ReturnInst true : boolean
//CHECK-NEXT: %BB1:
//CHECK-NEXT: %1 = ReturnInst undefined : undefined
//CHECK-NEXT:function_end
function delete_literal() {
return (delete 4);
}
//CHECK-LABEL:function delete_variable()
//CHECK-NEXT:frame = []
//CHECK-NEXT:%BB0:
//CHECK-NEXT: %0 = DeletePropertyInst globalObject : object, "x" : string
//CHECK-NEXT: %1 = ReturnInst %0
//CHECK-NEXT:%BB1:
//CHECK-NEXT: %2 = ReturnInst undefined : undefined
//CHECK-NEXT:function_end
function delete_variable() {
return (delete x);
}
//CHECK-LABEL:function delete_expr()
//CHECK-NEXT:frame = []
//CHECK-NEXT: %BB0:
//CHECK-NEXT: %0 = LoadPropertyInst globalObject : object, "sink" : string
//CHECK-NEXT: %1 = CallInst %0, undefined : undefined
//CHECK-NEXT: %2 = ReturnInst true : boolean
//CHECK-NEXT: %BB1:
//CHECK-NEXT: %3 = ReturnInst undefined : undefined
//CHECK-NEXT:function_end
function delete_expr() {
return (delete sink());
}