lyng/notes/bytecode_callsite_fix.md

Bytecode call-site PIC + fallback gating

Changes

• Added method call PIC path in bytecode VM with new CALL_SLOT/CALL_VIRTUAL opcodes.
• Fixed FieldRef property/delegate resolution to avoid bypassing ObjRecord delegation.
• Prevent delegated ObjRecord mutation by returning a resolved copy.
• Restricted bytecode call compilation to args that are ExpressionStatement (no splat/named/tail-block), fallback otherwise.

Rationale

• Fixes JVM test regressions and avoids premature evaluation of Statement args.
• Keeps delegated/property semantics identical to interpreter.

Tests

• ./gradlew :lynglib:jvmTest
• ./gradlew :lynglib:allTests -x :lynglib:jvmTest