Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/cpu/x86/vm/x86_64.ad
src/cpu/x86/vm/x86_64.ad
- changeset 604
- 9148c65abefc
- parent 603
- 7793bd37a336
- child 617
- 44abbb0d4c18
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inserted
replaced
| 603:7793bd37a336 | 604:9148c65abefc |
|---|---|
| 3806 | 3806 |
| 3807 // That's it | 3807 // That's it |
| 3808 masm.bind(DONE_LABEL); | 3808 masm.bind(DONE_LABEL); |
| 3809 %} | 3809 %} |
| 3810 | 3810 |
| 3811 enc_class enc_Array_Equals(rdi_RegP ary1, rsi_RegP ary2, rax_RegI tmp1, rbx_RegI tmp2, rcx_RegI result) %{ | |
| 3812 Label TRUE_LABEL, FALSE_LABEL, DONE_LABEL, COMPARE_LOOP_HDR, COMPARE_LOOP; | |
| 3813 MacroAssembler masm(&cbuf); | |
| 3814 | |
| 3815 Register ary1Reg = as_Register($ary1$$reg); | |
| 3816 Register ary2Reg = as_Register($ary2$$reg); | |
| 3817 Register tmp1Reg = as_Register($tmp1$$reg); | |
| 3818 Register tmp2Reg = as_Register($tmp2$$reg); | |
| 3819 Register resultReg = as_Register($result$$reg); | |
| 3820 | |
| 3821 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
| 3822 int base_offset = arrayOopDesc::base_offset_in_bytes(T_CHAR); | |
| 3823 | |
| 3824 // Check the input args | |
| 3825 masm.cmpq(ary1Reg, ary2Reg); | |
| 3826 masm.jcc(Assembler::equal, TRUE_LABEL); | |
| 3827 masm.testq(ary1Reg, ary1Reg); | |
| 3828 masm.jcc(Assembler::zero, FALSE_LABEL); | |
| 3829 masm.testq(ary2Reg, ary2Reg); | |
| 3830 masm.jcc(Assembler::zero, FALSE_LABEL); | |
| 3831 | |
| 3832 // Check the lengths | |
| 3833 masm.movl(tmp2Reg, Address(ary1Reg, length_offset)); | |
| 3834 masm.movl(resultReg, Address(ary2Reg, length_offset)); | |
| 3835 masm.cmpl(tmp2Reg, resultReg); | |
| 3836 masm.jcc(Assembler::notEqual, FALSE_LABEL); | |
| 3837 masm.testl(resultReg, resultReg); | |
| 3838 masm.jcc(Assembler::zero, TRUE_LABEL); | |
| 3839 | |
| 3840 // Get the number of 4 byte vectors to compare | |
| 3841 masm.shrl(resultReg, 1); | |
| 3842 | |
| 3843 // Check for odd-length arrays | |
| 3844 masm.andl(tmp2Reg, 1); | |
| 3845 masm.testl(tmp2Reg, tmp2Reg); | |
| 3846 masm.jcc(Assembler::zero, COMPARE_LOOP_HDR); | |
| 3847 | |
| 3848 // Compare 2-byte "tail" at end of arrays | |
| 3849 masm.load_unsigned_word(tmp1Reg, Address(ary1Reg, resultReg, Address::times_4, base_offset)); | |
| 3850 masm.load_unsigned_word(tmp2Reg, Address(ary2Reg, resultReg, Address::times_4, base_offset)); | |
| 3851 masm.cmpl(tmp1Reg, tmp2Reg); | |
| 3852 masm.jcc(Assembler::notEqual, FALSE_LABEL); | |
| 3853 masm.testl(resultReg, resultReg); | |
| 3854 masm.jcc(Assembler::zero, TRUE_LABEL); | |
| 3855 | |
| 3856 // Setup compare loop | |
| 3857 masm.bind(COMPARE_LOOP_HDR); | |
| 3858 // Shift tmp1Reg and tmp2Reg to the last 4-byte boundary of the arrays | |
| 3859 masm.leaq(tmp1Reg, Address(ary1Reg, resultReg, Address::times_4, base_offset)); | |
| 3860 masm.leaq(tmp2Reg, Address(ary2Reg, resultReg, Address::times_4, base_offset)); | |
| 3861 masm.negq(resultReg); | |
| 3862 | |
| 3863 // 4-byte-wide compare loop | |
| 3864 masm.bind(COMPARE_LOOP); | |
| 3865 masm.movl(ary1Reg, Address(tmp1Reg, resultReg, Address::times_4, 0)); | |
| 3866 masm.movl(ary2Reg, Address(tmp2Reg, resultReg, Address::times_4, 0)); | |
| 3867 masm.cmpl(ary1Reg, ary2Reg); | |
| 3868 masm.jcc(Assembler::notEqual, FALSE_LABEL); | |
| 3869 masm.incrementq(resultReg); | |
| 3870 masm.jcc(Assembler::notZero, COMPARE_LOOP); | |
| 3871 | |
| 3872 masm.bind(TRUE_LABEL); | |
| 3873 masm.movl(resultReg, 1); // return true | |
| 3874 masm.jmp(DONE_LABEL); | |
| 3875 | |
| 3876 masm.bind(FALSE_LABEL); | |
| 3877 masm.xorl(resultReg, resultReg); // return false | |
| 3878 | |
| 3879 // That's it | |
| 3880 masm.bind(DONE_LABEL); | |
| 3881 %} | |
| 3882 | |
| 3811 enc_class enc_rethrow() | 3883 enc_class enc_rethrow() |
| 3812 %{ | 3884 %{ |
| 3813 cbuf.set_inst_mark(); | 3885 cbuf.set_inst_mark(); |
| 3814 emit_opcode(cbuf, 0xE9); // jmp entry | 3886 emit_opcode(cbuf, 0xE9); // jmp entry |
| 3815 emit_d32_reloc(cbuf, | 3887 emit_d32_reloc(cbuf, |
| 10871 effect(USE_KILL str1, USE_KILL str2, KILL tmp1, KILL tmp2, KILL cr); | 10943 effect(USE_KILL str1, USE_KILL str2, KILL tmp1, KILL tmp2, KILL cr); |
| 10872 //ins_cost(300); | 10944 //ins_cost(300); |
| 10873 | 10945 |
| 10874 format %{ "String Compare $str1, $str2 -> $result // XXX KILL RAX, RBX" %} | 10946 format %{ "String Compare $str1, $str2 -> $result // XXX KILL RAX, RBX" %} |
| 10875 ins_encode( enc_String_Compare() ); | 10947 ins_encode( enc_String_Compare() ); |
| 10948 ins_pipe( pipe_slow ); | |
| 10949 %} | |
| 10950 | |
| 10951 // fast array equals | |
| 10952 instruct array_equals(rdi_RegP ary1, rsi_RegP ary2, rax_RegI tmp1, | |
| 10953 rbx_RegI tmp2, rcx_RegI result, rFlagsReg cr) %{ | |
| 10954 match(Set result (AryEq ary1 ary2)); | |
| 10955 effect(USE_KILL ary1, USE_KILL ary2, KILL tmp1, KILL tmp2, KILL cr); | |
| 10956 //ins_cost(300); | |
| 10957 | |
| 10958 format %{ "Array Equals $ary1,$ary2 -> $result // KILL RAX, RBX" %} | |
| 10959 ins_encode( enc_Array_Equals(ary1, ary2, tmp1, tmp2, result) ); | |
| 10876 ins_pipe( pipe_slow ); | 10960 ins_pipe( pipe_slow ); |
| 10877 %} | 10961 %} |
| 10878 | 10962 |
| 10879 //----------Control Flow Instructions------------------------------------------ | 10963 //----------Control Flow Instructions------------------------------------------ |
| 10880 // Signed compare Instructions | 10964 // Signed compare Instructions |
