// Phase 1 step 1.16 (PLAN-FFI.md): two `#jni_call` sites against the // same (class, method, sig) tuple. Today each site emits its own // `GetObjectClass` + `GetMethodID` call (no caching yet); after 1.17 // the lowering collapses to one cached `jmethodID` per unique // (class, method, sig). // // Runtime: unreachable. The JNI dispatch is all indirect through // `*env` — no external symbol declarations — so the IR loads cleanly // into the host JIT, and the dereferences never execute because the // guarding `g_should_call` global stays false. A plain `if false` // would get constant-folded, taking the `unused_jni` body out of the // IR with it; the runtime-readable global keeps the call alive so // the JNI lowering is visible to the IR snapshot. #import "modules/std.sx"; g_should_call : bool = false; unused_jni :: (env: *void, target: *void) { #jni_env(env) { #jni_call(void)(target, "noop", "()V"); #jni_call(void)(target, "noop", "()V"); } } main :: () -> i32 { if g_should_call { unused_jni(null, null); } print("ok\n"); 0 }