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comparison src/share/vm/c1/c1_LIRGenerator.cpp @ 1378:9f5b60a14736

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6939930: exception unwind changes in 6919934 hurts compilation speed Reviewed-by: twisti
author never
date Thu, 15 Apr 2010 18:14:49 -0700
parents 76c1d7d13ec5
children 0ba67bb5392c c18cbe5936b8 61b2245abf36
comparison
equal deleted inserted replaced
1377:ef74d6d1ac1e 1378:9f5b60a14736
1763 (x->exception()->as_NewInstance() == NULL && x->exception()->as_ExceptionObject() == NULL)) { 1763 (x->exception()->as_NewInstance() == NULL && x->exception()->as_ExceptionObject() == NULL)) {
1764 // if the exception object wasn't created using new then it might be null. 1764 // if the exception object wasn't created using new then it might be null.
1765 __ null_check(exception_opr, new CodeEmitInfo(info, true)); 1765 __ null_check(exception_opr, new CodeEmitInfo(info, true));
1766 } 1766 }
1767 1767
1768 if (compilation()->env()->jvmti_can_post_on_exceptions() && 1768 if (compilation()->env()->jvmti_can_post_on_exceptions()) {
1769 !block()->is_set(BlockBegin::default_exception_handler_flag)) {
1770 // we need to go through the exception lookup path to get JVMTI 1769 // we need to go through the exception lookup path to get JVMTI
1771 // notification done 1770 // notification done
1772 unwind = false; 1771 unwind = false;
1773 } 1772 }
1774 1773
1775 assert(!block()->is_set(BlockBegin::default_exception_handler_flag) || unwind,
1776 "should be no more handlers to dispatch to");
1777
1778 if (compilation()->env()->dtrace_method_probes() &&
1779 block()->is_set(BlockBegin::default_exception_handler_flag)) {
1780 // notify that this frame is unwinding
1781 BasicTypeList signature;
1782 signature.append(T_INT); // thread
1783 signature.append(T_OBJECT); // methodOop
1784 LIR_OprList* args = new LIR_OprList();
1785 args->append(getThreadPointer());
1786 LIR_Opr meth = new_register(T_OBJECT);
1787 __ oop2reg(method()->constant_encoding(), meth);
1788 args->append(meth);
1789 call_runtime(&signature, args, CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), voidType, NULL);
1790 }
1791
1792 // move exception oop into fixed register 1774 // move exception oop into fixed register
1793 __ move(exception_opr, exceptionOopOpr()); 1775 __ move(exception_opr, exceptionOopOpr());
1794 1776
1795 if (unwind) { 1777 if (unwind) {
1796 __ unwind_exception(LIR_OprFact::illegalOpr, exceptionOopOpr(), info); 1778 __ unwind_exception(exceptionOopOpr());
1797 } else { 1779 } else {
1798 __ throw_exception(exceptionPcOpr(), exceptionOopOpr(), info); 1780 __ throw_exception(exceptionPcOpr(), exceptionOopOpr(), info);
1799 } 1781 }
1800 } 1782 }
1801 1783