[code-reflection] RFR: Switch lowering fixes

[Mourad Abbay]

On Fri, 2 Jan 2026 13:29:40 GMT, Adam Sotona <asotona at openjdk.org> wrote:

> This patch fixes `bytecode/impl/LoweringTransform` with unboxing selector, implicit default target leading to exit block and conversion of constant labels.
> Unreflect runs of `TestSwitchExpressionOp` and `TestSwitchStatementOp` are now enabled and pass.

src/jdk.incubator.code/share/classes/jdk/incubator/code/bytecode/impl/LoweringTransform.java line 108:

> 106: 
> 107:         Value selector = block.context().getValue(swOp.operands().get(0));
> 108:         if (ConstantLabelSwitchChecker.isIntegralReferenceType(selector.type())) {

Why we need  to unbox the selector ?

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PR Review Comment: https://git.openjdk.org/babylon/pull/804#discussion_r2661819267