truffle: src/share/vm/code/compiledIC.cpp comparison

comparison src/share/vm/code/compiledIC.cpp @ 0:a61af66fc99e jdk7-b24

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author	duke
date	Sat, 01 Dec 2007 00:00:00 +0000
parents
children	760213a60e8b c18cbe5936b8 1a5913bf5e19

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--1:000000000000
+:a61af66fc99e
+/*
+* Copyright 1997-2006 Sun Microsystems, Inc.  All Rights Reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+* CA 95054 USA or visit www.sun.com if you need additional information or
+* have any questions.
+*
+*/
+#include "incls/_precompiled.incl"
+#include "incls/_compiledIC.cpp.incl"
+// Every time a compiled IC is changed or its type is being accessed,
+// either the CompiledIC_lock must be set or we must be at a safe point.
+//-----------------------------------------------------------------------------
+// Low-level access to an inline cache. Private, since they might not be
+// MT-safe to use.
+void CompiledIC::set_cached_oop(oop cache) {
+assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
+assert (!is_optimized(), "an optimized virtual call does not have a cached oop");
+assert (cache == NULL || cache != badOop, "invalid oop");
+if (TraceCompiledIC) {
+tty->print("  ");
+print_compiled_ic();
+tty->print_cr(" changing oop to " INTPTR_FORMAT, (address)cache);
+}
+if (cache == NULL)  cache = (oop)Universe::non_oop_word();
+*_oop_addr = cache;
+// fix up the relocations
+RelocIterator iter = _oops;
+while (iter.next()) {
+if (iter.type() == relocInfo::oop_type) {
+oop_Relocation* r = iter.oop_reloc();
+if (r->oop_addr() == _oop_addr)
+r->fix_oop_relocation();
+}
+}
+return;
+}
+oop CompiledIC::cached_oop() const {
+assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
+assert (!is_optimized(), "an optimized virtual call does not have a cached oop");
+if (!is_in_transition_state()) {
+oop data = *_oop_addr;
+// If we let the oop value here be initialized to zero...
+assert(data != NULL || Universe::non_oop_word() == NULL,
+"no raw nulls in CompiledIC oops, because of patching races");
+return (data == (oop)Universe::non_oop_word()) ? (oop)NULL : data;
+} else {
+return InlineCacheBuffer::cached_oop_for((CompiledIC *)this);
+}
+}
+void CompiledIC::set_ic_destination(address entry_point) {
+assert(entry_point != NULL, "must set legal entry point");
+assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
+if (TraceCompiledIC) {
+tty->print("  ");
+print_compiled_ic();
+tty->print_cr(" changing destination to " INTPTR_FORMAT, entry_point);
+}
+MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
+#ifdef ASSERT
+CodeBlob* cb = CodeCache::find_blob_unsafe(_ic_call);
+assert(cb != NULL && cb->is_nmethod(), "must be nmethod");
+#endif
+_ic_call->set_destination_mt_safe(entry_point);
+}
+address CompiledIC::ic_destination() const {
+assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
+if (!is_in_transition_state()) {
+return _ic_call->destination();
+} else {
+return InlineCacheBuffer::ic_destination_for((CompiledIC *)this);
+}
+}
+bool CompiledIC::is_in_transition_state() const {
+assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
+return InlineCacheBuffer::contains(_ic_call->destination());
+}
+// Returns native address of 'call' instruction in inline-cache. Used by
+// the InlineCacheBuffer when it needs to find the stub.
+address CompiledIC::stub_address() const {
+assert(is_in_transition_state(), "should only be called when we are in a transition state");
+return _ic_call->destination();
+}
+//-----------------------------------------------------------------------------
+// High-level access to an inline cache. Guaranteed to be MT-safe.
+void CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS) {
+methodHandle method = call_info->selected_method();
+bool is_invoke_interface = (bytecode == Bytecodes::_invokeinterface && !call_info->has_vtable_index());
+assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
+assert(method->is_oop(), "cannot be NULL and must be oop");
+assert(!is_optimized(), "cannot set an optimized virtual call to megamorphic");
+assert(is_call_to_compiled() || is_call_to_interpreted(), "going directly to megamorphic?");
+address entry;
+if (is_invoke_interface) {
+int index = klassItable::compute_itable_index(call_info->resolved_method()());
+entry = VtableStubs::create_stub(false, index, method());
+assert(entry != NULL, "entry not computed");
+klassOop k = call_info->resolved_method()->method_holder();
+assert(Klass::cast(k)->is_interface(), "sanity check");
+InlineCacheBuffer::create_transition_stub(this, k, entry);
+} else {
+// Can be different than method->vtable_index(), due to package-private etc.
+int vtable_index = call_info->vtable_index();
+entry = VtableStubs::create_stub(true, vtable_index, method());
+InlineCacheBuffer::create_transition_stub(this, method(), entry);
+}
+if (TraceICs) {
+ResourceMark rm;
+tty->print_cr ("IC@" INTPTR_FORMAT ": to megamorphic %s entry: " INTPTR_FORMAT,
+instruction_address(), method->print_value_string(), entry);
+}
+Events::log("compiledIC " INTPTR_FORMAT " --> megamorphic " INTPTR_FORMAT, this, (address)method());
+// We can't check this anymore. With lazy deopt we could have already
+// cleaned this IC entry before we even return. This is possible if
+// we ran out of space in the inline cache buffer trying to do the
+// set_next and we safepointed to free up space. This is a benign
+// race because the IC entry was complete when we safepointed so
+// cleaning it immediately is harmless.
+// assert(is_megamorphic(), "sanity check");
+}
+// 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_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 ||  (cached_oop() != NULL && cached_oop()->is_compiledICHolder()), "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;
+}
+void CompiledIC::set_to_clean() {
+assert(SafepointSynchronize::is_at_safepoint() || CompiledIC_lock->is_locked() , "MT-unsafe call");
+if (TraceInlineCacheClearing || TraceICs) {
+tty->print_cr("IC@" INTPTR_FORMAT ": set to clean", instruction_address());
+print();
+}
+address entry;
+if (is_optimized()) {
+entry = SharedRuntime::get_resolve_opt_virtual_call_stub();
+} else {
+entry = SharedRuntime::get_resolve_virtual_call_stub();
+}
+// A zombie transition will always be safe, since the oop has already been set to NULL, so
+// we only need to patch the destination
+bool safe_transition = is_optimized() || SafepointSynchronize::is_at_safepoint();
+if (safe_transition) {
+if (!is_optimized()) set_cached_oop(NULL);
+// Kill any leftover stub we might have too
+if (is_in_transition_state()) {
+ICStub* old_stub = ICStub_from_destination_address(stub_address());
+old_stub->clear();
+}
+set_ic_destination(entry);
+} else {
+// Unsafe transition - create stub.
+InlineCacheBuffer::create_transition_stub(this, NULL, entry);
+}
+// We can't check this anymore. With lazy deopt we could have already
+// cleaned this IC entry before we even return. This is possible if
+// we ran out of space in the inline cache buffer trying to do the
+// set_next and we safepointed to free up space. This is a benign
+// race because the IC entry was complete when we safepointed so
+// cleaning it immediately is harmless.
+// assert(is_clean(), "sanity check");
+}
+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_oop() == NULL, "sanity check");
+return is_clean;
+}
+void CompiledIC::set_to_monomorphic(const CompiledICInfo& info) {
+assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
+// Updating a cache to the wrong entry can cause bugs that are very hard
+// to track down - if cache entry gets invalid - we just clean it. In
+// this way it is always the same code path that is responsible for
+// updating and resolving an inline cache
+//
+// The above is no longer true. SharedRuntime::fixup_callers_callsite will change optimized
+// callsites. In addition ic_miss code will update a site to monomorphic if it determines
+// that an monomorphic call to the interpreter can now be monomorphic to compiled code.
+//
+// In both of these cases the only thing being modifed is the jump/call target and these
+// transitions are mt_safe
+Thread *thread = Thread::current();
+if (info._to_interpreter) {
+// Call to interpreter
+if (info.is_optimized() && is_optimized()) {
+assert(is_clean(), "unsafe IC path");
+MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
+// the call analysis (callee structure) specifies that the call is optimized
+// (either because of CHA or the static target is final)
+// At code generation time, this call has been emitted as static call
+// Call via stub
+assert(info.cached_oop().not_null() && info.cached_oop()->is_method(), "sanity check");
+CompiledStaticCall* csc = compiledStaticCall_at(instruction_address());
+methodHandle method (thread, (methodOop)info.cached_oop()());
+csc->set_to_interpreted(method, info.entry());
+if (TraceICs) {
+ResourceMark rm(thread);
+tty->print_cr ("IC@" INTPTR_FORMAT ": monomorphic to interpreter: %s",
+instruction_address(),
+method->print_value_string());
+}
+} else {
+// Call via method-klass-holder
+assert(info.cached_oop().not_null(), "must be set");
+InlineCacheBuffer::create_transition_stub(this, info.cached_oop()(), info.entry());
+if (TraceICs) {
+ResourceMark rm(thread);
+tty->print_cr ("IC@" INTPTR_FORMAT ": monomorphic to interpreter via mkh", instruction_address());
+}
+}
+} else {
+// Call to compiled code
+bool static_bound = info.is_optimized() || (info.cached_oop().is_null());
+#ifdef ASSERT
+CodeBlob* cb = CodeCache::find_blob_unsafe(info.entry());
+assert (cb->is_nmethod(), "must be compiled!");
+#endif /* ASSERT */
+// This is MT safe if we come from a clean-cache and go through a
+// non-verified entry point
+bool safe = SafepointSynchronize::is_at_safepoint() ||
+(!is_in_transition_state() && (info.is_optimized() || static_bound || is_clean()));
+if (!safe) {
+InlineCacheBuffer::create_transition_stub(this, info.cached_oop()(), info.entry());
+} else {
+set_ic_destination(info.entry());
+if (!is_optimized()) set_cached_oop(info.cached_oop()());
+}
+if (TraceICs) {
+ResourceMark rm(thread);
+assert(info.cached_oop() == NULL || info.cached_oop()()->is_klass(), "must be");
+tty->print_cr ("IC@" INTPTR_FORMAT ": monomorphic to compiled (rcvr klass) %s: %s",
+instruction_address(),
+((klassOop)info.cached_oop()())->print_value_string(),
+(safe) ? "" : "via stub");
+}
+}
+// We can't check this anymore. With lazy deopt we could have already
+// cleaned this IC entry before we even return. This is possible if
+// we ran out of space in the inline cache buffer trying to do the
+// set_next and we safepointed to free up space. This is a benign
+// race because the IC entry was complete when we safepointed so
+// cleaning it immediately is harmless.
+// assert(is_call_to_compiled() || is_call_to_interpreted(), "sanity check");
+}
+// is_optimized: Compiler has generated an optimized call (i.e., no inline
+// cache) static_bound: The call can be static bound (i.e, no need to use
+// inline cache)
+void CompiledIC::compute_monomorphic_entry(methodHandle method,
+KlassHandle receiver_klass,
+bool is_optimized,
+bool static_bound,
+CompiledICInfo& info,
+TRAPS) {
+info._is_optimized = is_optimized;
+nmethod* method_code = method->code();
+address entry = NULL;
+if (method_code != NULL) {
+// Call to compiled code
+if (static_bound || is_optimized) {
+entry      = method_code->verified_entry_point();
+} else {
+entry      = method_code->entry_point();
+}
+}
+if (entry != NULL) {
+// Call to compiled code
+info._entry      = entry;
+if (static_bound || is_optimized) {
+info._cached_oop = Handle(THREAD, (oop)NULL);
+} else {
+info._cached_oop = receiver_klass;
+}
+info._to_interpreter = false;
+} else {
+// Note: the following problem exists with Compiler1:
+//   - at compile time we may or may not know if the destination is final
+//   - if we know that the destination is final, we will emit an optimized
+//     virtual call (no inline cache), and need a methodOop to make a call
+//     to the interpreter
+//   - if we do not know if the destination is final, we emit a standard
+//     virtual call, and use CompiledICHolder to call interpreted code
+//     (no static call stub has been generated)
+//     However in that case we will now notice it is static_bound
+//     and convert the call into what looks to be an optimized
+//     virtual call. This causes problems in verifying the IC because
+//     it look vanilla but is optimized. Code in is_call_to_interpreted
+//     is aware of this and weakens its asserts.
+info._to_interpreter = true;
+// static_bound should imply is_optimized -- otherwise we have a
+// performance bug (statically-bindable method is called via
+// dynamically-dispatched call note: the reverse implication isn't
+// necessarily true -- the call may have been optimized based on compiler
+// analysis (static_bound is only based on "final" etc.)
+#ifdef COMPILER2
+#ifdef TIERED
+#if defined(ASSERT)
+// can't check the assert because we don't have the CompiledIC with which to
+// find the address if the call instruction.
+//
+// CodeBlob* cb = find_blob_unsafe(instruction_address());
+// assert(cb->is_compiled_by_c1() || !static_bound || is_optimized, "static_bound should imply is_optimized");
+#endif // ASSERT
+#else
+assert(!static_bound || is_optimized, "static_bound should imply is_optimized");
+#endif // TIERED
+#endif // COMPILER2
+if (is_optimized) {
+// Use stub entry
+info._entry      = method()->get_c2i_entry();
+info._cached_oop = method;
+} else {
+// Use mkh entry
+oop holder = oopFactory::new_compiledICHolder(method, receiver_klass, CHECK);
+info._cached_oop = Handle(THREAD, holder);
+info._entry      = method()->get_c2i_unverified_entry();
+}
+}
+}
+inline static RelocIterator parse_ic(CodeBlob* code, address ic_call, oop* &_oop_addr, bool *is_optimized) {
+address  first_oop = NULL;
+// Mergers please note: Sun SC5.x CC insists on an lvalue for a reference parameter.
+CodeBlob *code1 = code;
+return virtual_call_Relocation::parse_ic(code1, ic_call, first_oop, _oop_addr, is_optimized);
+}
+CompiledIC::CompiledIC(NativeCall* ic_call)
+: _ic_call(ic_call),
+_oops(parse_ic(NULL, ic_call->instruction_address(), _oop_addr, &_is_optimized))
+{
+}
+CompiledIC::CompiledIC(Relocation* ic_reloc)
+: _ic_call(nativeCall_at(ic_reloc->addr())),
+_oops(parse_ic(ic_reloc->code(), ic_reloc->addr(), _oop_addr, &_is_optimized))
+{
+assert(ic_reloc->type() == relocInfo::virtual_call_type ||
+ic_reloc->type() == relocInfo::opt_virtual_call_type, "wrong reloc. info");
+}
+// ----------------------------------------------------------------------------
+void CompiledStaticCall::set_to_clean() {
+assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
+// Reset call site
+MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
+#ifdef ASSERT
+CodeBlob* cb = CodeCache::find_blob_unsafe(this);
+assert(cb != NULL && cb->is_nmethod(), "must be nmethod");
+#endif
+set_destination_mt_safe(SharedRuntime::get_resolve_static_call_stub());
+// Do not reset stub here:  It is too expensive to call find_stub.
+// Instead, rely on caller (nmethod::clear_inline_caches) to clear
+// both the call and its stub.
+}
+bool CompiledStaticCall::is_clean() const {
+return destination() == SharedRuntime::get_resolve_static_call_stub();
+}
+bool CompiledStaticCall::is_call_to_compiled() const {
+return CodeCache::contains(destination());
+}
+bool CompiledStaticCall::is_call_to_interpreted() const {
+// It is a call to interpreted, if it calls to a stub. Hence, the destination
+// must be in the stub part of the nmethod that contains the call
+nmethod* nm = CodeCache::find_nmethod(instruction_address());
+return nm->stub_contains(destination());
+}
+void CompiledStaticCall::set_to_interpreted(methodHandle callee, address entry) {
+address stub=find_stub();
+assert(stub!=NULL, "stub not found");
+if (TraceICs) {
+ResourceMark rm;
+tty->print_cr("CompiledStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
+instruction_address(),
+callee->name_and_sig_as_C_string());
+}
+NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);   // creation also verifies the object
+NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
+assert(method_holder->data()    == 0           || method_holder->data()    == (intptr_t)callee(), "a) MT-unsafe modification of inline cache");
+assert(jump->jump_destination() == (address)-1 || jump->jump_destination() == entry, "b) MT-unsafe modification of inline cache");
+// Update stub
+method_holder->set_data((intptr_t)callee());
+jump->set_jump_destination(entry);
+// Update jump to call
+set_destination_mt_safe(stub);
+}
+void CompiledStaticCall::set(const StaticCallInfo& info) {
+assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
+MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
+// Updating a cache to the wrong entry can cause bugs that are very hard
+// to track down - if cache entry gets invalid - we just clean it. In
+// this way it is always the same code path that is responsible for
+// updating and resolving an inline cache
+assert(is_clean(), "do not update a call entry - use clean");
+if (info._to_interpreter) {
+// Call to interpreted code
+set_to_interpreted(info.callee(), info.entry());
+} else {
+if (TraceICs) {
+ResourceMark rm;
+tty->print_cr("CompiledStaticCall@" INTPTR_FORMAT ": set_to_compiled " INTPTR_FORMAT,
+instruction_address(),
+info.entry());
+}
+// Call to compiled code
+assert (CodeCache::contains(info.entry()), "wrong entry point");
+set_destination_mt_safe(info.entry());
+}
+}
+// Compute settings for a CompiledStaticCall. Since we might have to set
+// the stub when calling to the interpreter, we need to return arguments.
+void CompiledStaticCall::compute_entry(methodHandle m, StaticCallInfo& info) {
+nmethod* m_code = m->code();
+info._callee = m;
+if (m_code != NULL) {
+info._to_interpreter = false;
+info._entry  = m_code->verified_entry_point();
+} else {
+// Callee is interpreted code.  In any case entering the interpreter
+// puts a converter-frame on the stack to save arguments.
+info._to_interpreter = true;
+info._entry      = m()->get_c2i_entry();
+}
+}
+void CompiledStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
+assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
+// Reset stub
+address stub = static_stub->addr();
+assert(stub!=NULL, "stub not found");
+NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);   // creation also verifies the object
+NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
+method_holder->set_data(0);
+jump->set_jump_destination((address)-1);
+}
+address CompiledStaticCall::find_stub() {
+// Find reloc. information containing this call-site
+RelocIterator iter((nmethod*)NULL, instruction_address());
+while (iter.next()) {
+if (iter.addr() == instruction_address()) {
+switch(iter.type()) {
+case relocInfo::static_call_type:
+return iter.static_call_reloc()->static_stub();
+// We check here for opt_virtual_call_type, since we reuse the code
+// from the CompiledIC implementation
+case relocInfo::opt_virtual_call_type:
+return iter.opt_virtual_call_reloc()->static_stub();
+case relocInfo::poll_type:
+case relocInfo::poll_return_type: // A safepoint can't overlap a call.
+default:
+ShouldNotReachHere();
+}
+}
+}
+return NULL;
+}
+//-----------------------------------------------------------------------------
+// Non-product mode code
+#ifndef PRODUCT
+void CompiledIC::verify() {
+// make sure code pattern is actually a call imm32 instruction
+_ic_call->verify();
+if (os::is_MP()) {
+_ic_call->verify_alignment();
+}
+assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted()
+|| is_optimized() || is_megamorphic(), "sanity check");
+}
+void CompiledIC::print() {
+print_compiled_ic();
+tty->cr();
+}
+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());
+}
+void CompiledStaticCall::print() {
+tty->print("static call at " INTPTR_FORMAT " -> ", instruction_address());
+if (is_clean()) {
+tty->print("clean");
+} else if (is_call_to_compiled()) {
+tty->print("compiled");
+} else if (is_call_to_interpreted()) {
+tty->print("interpreted");
+}
+tty->cr();
+}
+void CompiledStaticCall::verify() {
+// Verify call
+NativeCall::verify();
+if (os::is_MP()) {
+verify_alignment();
+}
+// Verify stub
+address stub = find_stub();
+assert(stub != NULL, "no stub found for static call");
+NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);   // creation also verifies the object
+NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
+// Verify state
+assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted(), "sanity check");
+}
+#endif

Mercurial > hg > truffle

comparison src/share/vm/code/compiledIC.cpp @ 0:a61af66fc99e jdk7-b24