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When MemberExpression::generate_bytecode calls emit_load_from_reference, it only uses the loaded_value and discards the reference operands. For computed member expressions (e.g. a[0]), this was generating an unnecessary Mov to save the property register for potential store-back. Add a ReferenceMode parameter to emit_load_from_reference. When LoadOnly is passed, the computed property path skips the register save and Mov.
14 lines
308 B
JavaScript
14 lines
308 B
JavaScript
// Test that computed member reads don't generate an unnecessary Mov
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// to save the property register (only needed for store-back operations).
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function computed_read(a) {
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return a[0];
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}
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function computed_read_expression(a, i) {
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return a[i];
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}
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computed_read([1]);
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computed_read_expression([1], 0);
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