# HG changeset patch # User vlivanov # Date 1402394459 0 # Node ID 6df48e5636322f49c50b98973d40f223492ab234 # Parent 5b01505efb7acf2d876b14112b65f6b39af6360e 8033626: assert(ex_map->jvms()->same_calls_as(_exceptions->jvms())) failed: all collected exceptions must come from the same place Reviewed-by: kvn, roland diff -r 5b01505efb7a -r 6df48e563632 hotspot/src/share/vm/opto/graphKit.cpp --- a/hotspot/src/share/vm/opto/graphKit.cpp Tue Jun 10 08:53:22 2014 +0200 +++ b/hotspot/src/share/vm/opto/graphKit.cpp Tue Jun 10 10:00:59 2014 +0000 @@ -2513,7 +2513,7 @@ //------------------------------make_slow_call_ex------------------------------ // Make the exception handler hookups for the slow call -void GraphKit::make_slow_call_ex(Node* call, ciInstanceKlass* ex_klass, bool separate_io_proj) { +void GraphKit::make_slow_call_ex(Node* call, ciInstanceKlass* ex_klass, bool separate_io_proj, bool deoptimize) { if (stopped()) return; // Make a catch node with just two handlers: fall-through and catch-all @@ -2527,11 +2527,17 @@ set_i_o(i_o); if (excp != top()) { - // Create an exception state also. - // Use an exact type if the caller has specified a specific exception. - const Type* ex_type = TypeOopPtr::make_from_klass_unique(ex_klass)->cast_to_ptr_type(TypePtr::NotNull); - Node* ex_oop = new CreateExNode(ex_type, control(), i_o); - add_exception_state(make_exception_state(_gvn.transform(ex_oop))); + if (deoptimize) { + // Deoptimize if an exception is caught. Don't construct exception state in this case. + uncommon_trap(Deoptimization::Reason_unhandled, + Deoptimization::Action_none); + } else { + // Create an exception state also. + // Use an exact type if the caller has specified a specific exception. + const Type* ex_type = TypeOopPtr::make_from_klass_unique(ex_klass)->cast_to_ptr_type(TypePtr::NotNull); + Node* ex_oop = new CreateExNode(ex_type, control(), i_o); + add_exception_state(make_exception_state(_gvn.transform(ex_oop))); + } } } @@ -3352,7 +3358,8 @@ //---------------------------set_output_for_allocation------------------------- Node* GraphKit::set_output_for_allocation(AllocateNode* alloc, - const TypeOopPtr* oop_type) { + const TypeOopPtr* oop_type, + bool deoptimize_on_exception) { int rawidx = Compile::AliasIdxRaw; alloc->set_req( TypeFunc::FramePtr, frameptr() ); add_safepoint_edges(alloc); @@ -3360,7 +3367,7 @@ set_control( _gvn.transform(new ProjNode(allocx, TypeFunc::Control) ) ); // create memory projection for i_o set_memory ( _gvn.transform( new ProjNode(allocx, TypeFunc::Memory, true) ), rawidx ); - make_slow_call_ex(allocx, env()->Throwable_klass(), true); + make_slow_call_ex(allocx, env()->Throwable_klass(), true, deoptimize_on_exception); // create a memory projection as for the normal control path Node* malloc = _gvn.transform(new ProjNode(allocx, TypeFunc::Memory)); @@ -3438,9 +3445,11 @@ // The optional arguments are for specialized use by intrinsics: // - If 'extra_slow_test' if not null is an extra condition for the slow-path. // - If 'return_size_val', report the the total object size to the caller. +// - deoptimize_on_exception controls how Java exceptions are handled (rethrow vs deoptimize) Node* GraphKit::new_instance(Node* klass_node, Node* extra_slow_test, - Node* *return_size_val) { + Node* *return_size_val, + bool deoptimize_on_exception) { // Compute size in doublewords // The size is always an integral number of doublewords, represented // as a positive bytewise size stored in the klass's layout_helper. @@ -3508,7 +3517,7 @@ size, klass_node, initial_slow_test); - return set_output_for_allocation(alloc, oop_type); + return set_output_for_allocation(alloc, oop_type, deoptimize_on_exception); } //-------------------------------new_array------------------------------------- @@ -3518,7 +3527,8 @@ Node* GraphKit::new_array(Node* klass_node, // array klass (maybe variable) Node* length, // number of array elements int nargs, // number of arguments to push back for uncommon trap - Node* *return_size_val) { + Node* *return_size_val, + bool deoptimize_on_exception) { jint layout_con = Klass::_lh_neutral_value; Node* layout_val = get_layout_helper(klass_node, layout_con); int layout_is_con = (layout_val == NULL); @@ -3661,7 +3671,7 @@ ary_type = ary_type->is_aryptr()->cast_to_size(length_type); } - Node* javaoop = set_output_for_allocation(alloc, ary_type); + Node* javaoop = set_output_for_allocation(alloc, ary_type, deoptimize_on_exception); // Cast length on remaining path to be as narrow as possible if (map()->find_edge(length) >= 0) { diff -r 5b01505efb7a -r 6df48e563632 hotspot/src/share/vm/opto/graphKit.hpp --- a/hotspot/src/share/vm/opto/graphKit.hpp Tue Jun 10 08:53:22 2014 +0200 +++ b/hotspot/src/share/vm/opto/graphKit.hpp Tue Jun 10 10:00:59 2014 +0000 @@ -807,7 +807,7 @@ // merge in all memory slices from new_mem, along the given path void merge_memory(Node* new_mem, Node* region, int new_path); - void make_slow_call_ex(Node* call, ciInstanceKlass* ex_klass, bool separate_io_proj); + void make_slow_call_ex(Node* call, ciInstanceKlass* ex_klass, bool separate_io_proj, bool deoptimize = false); // Helper functions to build synchronizations int next_monitor(); @@ -849,13 +849,16 @@ // implementation of object creation Node* set_output_for_allocation(AllocateNode* alloc, - const TypeOopPtr* oop_type); + const TypeOopPtr* oop_type, + bool deoptimize_on_exception=false); Node* get_layout_helper(Node* klass_node, jint& constant_value); Node* new_instance(Node* klass_node, Node* slow_test = NULL, - Node* *return_size_val = NULL); + Node* *return_size_val = NULL, + bool deoptimize_on_exception = false); Node* new_array(Node* klass_node, Node* count_val, int nargs, - Node* *return_size_val = NULL); + Node* *return_size_val = NULL, + bool deoptimize_on_exception = false); // java.lang.String helpers Node* load_String_offset(Node* ctrl, Node* str); diff -r 5b01505efb7a -r 6df48e563632 hotspot/src/share/vm/opto/library_call.cpp --- a/hotspot/src/share/vm/opto/library_call.cpp Tue Jun 10 08:53:22 2014 +0200 +++ b/hotspot/src/share/vm/opto/library_call.cpp Tue Jun 10 10:00:59 2014 +0000 @@ -4579,7 +4579,10 @@ // It's an instance, and it passed the slow-path tests. PreserveJVMState pjvms(this); Node* obj_size = NULL; - Node* alloc_obj = new_instance(obj_klass, NULL, &obj_size); + // Need to deoptimize on exception from allocation since Object.clone intrinsic + // is reexecuted if deoptimization occurs and there could be problems when merging + // exception state between multiple Object.clone versions (reexecute=true vs reexecute=false). + Node* alloc_obj = new_instance(obj_klass, NULL, &obj_size, /*deoptimize_on_exception=*/true); copy_to_clone(obj, alloc_obj, obj_size, false, !use_ReduceInitialCardMarks()); diff -r 5b01505efb7a -r 6df48e563632 hotspot/test/compiler/intrinsics/clone/TestObjectClone.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hotspot/test/compiler/intrinsics/clone/TestObjectClone.java Tue Jun 10 10:00:59 2014 +0000 @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +/* + * @test + * @bug 8033626 + * @summary assert(ex_map->jvms()->same_calls_as(_exceptions->jvms())) failed: all collected exceptions must come from the same place + * @library /testlibrary + * @run main/othervm -XX:-TieredCompilation -Xbatch -XX:CompileOnly=TestObjectClone::f TestObjectClone + */ +import com.oracle.java.testlibrary.Asserts; + +public class TestObjectClone implements Cloneable { + static class A extends TestObjectClone {} + static class B extends TestObjectClone { + public B clone() { + return (B)TestObjectClone.b; + } + } + static class C extends TestObjectClone { + public C clone() { + return (C)TestObjectClone.c; + } + } + static class D extends TestObjectClone { + public D clone() { + return (D)TestObjectClone.d; + } + } + static TestObjectClone a = new A(), b = new B(), c = new C(), d = new D(); + + public static Object f(TestObjectClone o) throws CloneNotSupportedException { + // Polymorphic call site: >90% Object::clone / <10% other methods + return o.clone(); + } + + public static void main(String[] args) throws Exception { + TestObjectClone[] params1 = {a, a, a, a, a, a, a, a, a, a, a, + a, a, a, a, a, a, a, a, a, a, a, + a, a, a, a, a, a, a, a, a, a, a, + b, c, d}; + + for (int i = 0; i < 15000; i++) { + f(params1[i % params1.length]); + } + + Asserts.assertTrue(f(a) != a); + Asserts.assertTrue(f(b) == b); + Asserts.assertTrue(f(c) == c); + Asserts.assertTrue(f(d) == d); + + try { + f(null); + throw new AssertionError(""); + } catch (NullPointerException e) { /* expected */ } + + System.out.println("TEST PASSED"); + } +}