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30 lines
774 B
30 lines
774 B
/*
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* Copyright (c) 2019-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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class HoistUnmodeled {
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// Any unmodeled (e.g. timing) call is assumed to be modifying global
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// state
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void timing_calls_dont_hoist() {
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for (int i = 0; i < 10; i++) {
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System.nanoTime();
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}
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}
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// doesn't read from global state or call any unmodeled function, a
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// harmless pure function
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void harmless_pure() {}
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// It should be ok to hoist harmless_pure() since it doesn't read
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// from global state.
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void harmless_hoist_FN() {
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for (int i = 0; i < 10; i++) {
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timing_calls_dont_hoist(); // don't hoist
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harmless_pure(); // ok to hoist
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}
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}
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}
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