[code-reflection] RFR: Bitwise complement op

Chen Liang liach at openjdk.org
Wed Aug 14 23:39:32 UTC 2024


On Wed, 14 Aug 2024 22:46:35 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

> Lowering `~x` to bytecode generates the equivalent of `x ^ -1`, so the first lift and generation cycle will result in different bytecode.

src/java.base/share/classes/java/lang/reflect/code/bytecode/BytecodeGenerator.java line 586:

> 584:                         processFirstOperand(op);
> 585:                         switch (rvt) {
> 586:                             case IntType, BooleanType, ByteType, ShortType, CharType -> {

Do we intend to support boolean even though JLS doesn't allow complement `~` on boolean values?

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PR Review Comment: https://git.openjdk.org/babylon/pull/216#discussion_r1717642009


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