bool CompiledIC::is_call_to_interpreted() const {
assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
// Call to interpreter if destination is either calling to a stub (if it
// is optimized), or calling to an I2C blob
bool is_call_to_interpreted = false;
if (!is_optimized()) {
// must use unsafe because the destination can be a zombie (and we're cleaning)
// and the print_compiled_ic code wants to know if site (in the non-zombie)
// is to the interpreter.
CodeBlob* cb = CodeCache::find_blob_unsafe(ic_destination());
is_call_to_interpreted = (cb != NULL && cb->is_adapter_blob());
assert(!is_call_to_interpreted || (is_icholder_call() && cached_icholder() != NULL), "sanity check");
} else {
// Check if we are calling into our own codeblob (i.e., to a stub)
CodeBlob* cb = CodeCache::find_blob(_ic_call->instruction_address());
address dest = ic_destination();
#ifdef ASSERT
{
CodeBlob* db = CodeCache::find_blob_unsafe(dest);
assert(!db->is_adapter_blob(), "must use stub!");
}
#endif /* ASSERT */
is_call_to_interpreted = cb->contains(dest);
}
return is_call_to_interpreted;
}
bool CompiledIC::is_call_to_interpreted() const {
assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
// Call to interpreter if destination is either calling to a stub (if it
// is optimized), or calling to an I2C
bool is_call_to_interpreted = false;
#ifdef COMPILER1
if (!is_optimized()) {
is_call_to_interpreted =
Runtime1::blob_for(Runtime1::interpreter_entries_id)->contains(ic_destination());
} else {
// Check if we are calling into our own codeblob (i.e., to a stub)
CodeBlob* cb = CodeCache::find_blob(_ic_call->instruction_address());
is_call_to_interpreted = cb->contains(ic_destination());
}
#else
if (!is_optimized()) {
CodeBlob* cb = CodeCache::find_blob(ic_destination());
is_call_to_interpreted = (cb != NULL && cb->is_c2i_adapter());
} else {
// Check if we are calling into our own codeblob (i.e., to a stub)
CodeBlob* cb = CodeCache::find_blob(_ic_call->instruction_address());
is_call_to_interpreted = cb->contains(ic_destination());
}
#endif // COMPILER1
assert(!is_call_to_interpreted || is_optimized() || (cached_oop() != NULL && cached_oop()->is_compiledICHolder()), "sanity check");
return is_call_to_interpreted;
}
// true if destination is megamorphic stub
bool CompiledIC::is_megamorphic() const {
assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
assert(!is_optimized(), "an optimized call cannot be megamorphic");
// Cannot rely on cached_oop. It is either an interface or a method.
return VtableStubs::is_entry_point(ic_destination());
}
bool CompiledIC::is_call_to_compiled() const {
assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
// Use unsafe, since an inline cache might point to a zombie method. However, the zombie
// method is guaranteed to still exist, since we only remove methods after all inline caches
// has been cleaned up
CodeBlob* cb = CodeCache::find_blob_unsafe(ic_destination());
bool is_monomorphic = (cb != NULL && cb->is_nmethod());
// Check that the cached_oop is a klass for non-optimized monomorphic calls
// This assertion is invalid for compiler1: a call that does not look optimized (no static stub) can be used
// for calling directly to vep without using the inline cache (i.e., cached_oop == NULL)
#ifdef ASSERT
#ifdef TIERED
CodeBlob* caller = CodeCache::find_blob_unsafe(instruction_address());
bool is_c1_method = caller->is_compiled_by_c1();
#else
#ifdef COMPILER1
bool is_c1_method = true;
#else
bool is_c1_method = false;
#endif // COMPILER1
#endif // TIERED
assert( is_c1_method ||
!is_monomorphic ||
is_optimized() ||
(cached_oop() != NULL && cached_oop()->is_klass()), "sanity check");
#endif // ASSERT
return is_monomorphic;
}
bool CompiledIC::is_clean() const {
assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
bool is_clean = false;
address dest = ic_destination();
is_clean = dest == SharedRuntime::get_resolve_opt_virtual_call_stub() ||
dest == SharedRuntime::get_resolve_virtual_call_stub();
assert(!is_clean || is_optimized() || cached_value() == NULL, "sanity check");
return is_clean;
}
bool CompiledIC::is_clean() const {
assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
bool is_clean = false;
address dest = ic_destination();
#ifdef COMPILER1
is_clean =
dest == Runtime1::entry_for(Runtime1::resolve_invokevirtual_id) ||
dest == Runtime1::entry_for(Runtime1::resolve_invoke_opt_virtual_id);
#else
is_clean = dest == OptoRuntime::resolve_virtual_call_Java() ||
dest == OptoRuntime::resolve_opt_virtual_call_Java();
#endif
assert(!is_clean || is_optimized() || cached_oop() == NULL, "sanity check");
return is_clean;
}
bool CompiledIC::is_call_to_compiled() const {
assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
// Use unsafe, since an inline cache might point to a zombie method. However, the zombie
// method is guaranteed to still exist, since we only remove methods after all inline caches
// has been cleaned up
CodeBlob* cb = CodeCache::find_blob_unsafe(ic_destination());
bool is_monomorphic = (cb != NULL && cb->is_nmethod());
// Check that the cached_value is a klass for non-optimized monomorphic calls
// This assertion is invalid for compiler1: a call that does not look optimized (no static stub) can be used
// for calling directly to vep without using the inline cache (i.e., cached_value == NULL).
// For JVMCI this occurs because CHA is only used to improve inlining so call sites which could be optimized
// virtuals because there are no currently loaded subclasses of a type are left as virtual call sites.
#ifdef ASSERT
CodeBlob* caller = CodeCache::find_blob_unsafe(instruction_address());
bool is_c1_or_jvmci_method = caller->is_compiled_by_c1() || caller->is_compiled_by_jvmci();
assert( is_c1_or_jvmci_method ||
!is_monomorphic ||
is_optimized() ||
!caller->is_alive() ||
(cached_metadata() != NULL && cached_metadata()->is_klass()), "sanity check");
#endif // ASSERT
return is_monomorphic;
}
void CompiledIC::print_compiled_ic() {
tty->print("Inline cache at " INTPTR_FORMAT ", calling %s " INTPTR_FORMAT " cached_value " INTPTR_FORMAT,
p2i(instruction_address()), is_call_to_interpreted() ? "interpreted " : "", p2i(ic_destination()), p2i(is_optimized() ? NULL : cached_value()));
}
bool CompiledIC::is_icholder_call() const {
assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
return !_is_optimized && is_icholder_entry(ic_destination());
}
void CompiledIC::print_compiled_ic() {
tty->print("Inline cache at " INTPTR_FORMAT ", calling %s " INTPTR_FORMAT,
instruction_address(), is_call_to_interpreted() ? "interpreted " : "", ic_destination());
}