jdk8-mips64-public/hotspot: src/cpu/x86/vm/c1_LIRAssembler

6603011: RFE: Optimize long division
Summary: Transform long division by constant into multiply
Reviewed-by: never, kvn

     1 /*

     2  * Copyright 2000-2006 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25  private:

    27   Address::ScaleFactor array_element_size(BasicType type) const;

    29   void monitorexit(LIR_Opr obj_opr, LIR_Opr lock_opr, Register new_hdr, int monitor_no, Register exception);

    31   void arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack);

    33   // helper functions which checks for overflow and sets bailout if it

    34   // occurs.  Always returns a valid embeddable pointer but in the

    35   // bailout case the pointer won't be to unique storage.

    36   address float_constant(float f);

    37   address double_constant(double d);

    39 public:

    41   void store_parameter(Register r, int offset_from_esp_in_words);

    42   void store_parameter(jint c,     int offset_from_esp_in_words);

    43   void store_parameter(jobject c,  int offset_from_esp_in_words);

    45   enum { call_stub_size = 15,

    46          exception_handler_size = DEBUG_ONLY(1*K) NOT_DEBUG(175),

    47          deopt_handler_size = 10

    48        };

src/cpu/x86/vm/c1_LIRAssembler_x86.hpp@f3de1255b035