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comparison src/cpu/x86/vm/x86_64.ad @ 1396:d7f654633cfe

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6946040: add intrinsic for short and char reverseBytes Reviewed-by: never, twisti Contributed-by: Hiroshi Yamauchi <yamauchi@google.com>
author never
date Mon, 26 Apr 2010 11:27:21 -0700
parents 2883969d09e7
children c18cbe5936b8 110501f54a99
comparison
equal deleted inserted replaced
1385:bc32f286fae0 1396:d7f654633cfe
1 // 1 //
2 // Copyright 2003-2009 Sun Microsystems, Inc. All Rights Reserved. 2 // Copyright 2003-2010 Sun Microsystems, Inc. All Rights Reserved.
3 // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 // 4 //
5 // This code is free software; you can redistribute it and/or modify it 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 6 // under the terms of the GNU General Public License version 2 only, as
7 // published by the Free Software Foundation. 7 // published by the Free Software Foundation.
7369 opcode(0x0F, 0xC8); /* Opcode 0F /C8 */ 7369 opcode(0x0F, 0xC8); /* Opcode 0F /C8 */
7370 ins_encode( REX_reg_wide(dst), OpcP, opc2_reg(dst) ); 7370 ins_encode( REX_reg_wide(dst), OpcP, opc2_reg(dst) );
7371 ins_pipe( ialu_reg); 7371 ins_pipe( ialu_reg);
7372 %} 7372 %}
7373 7373
7374 instruct bytes_reverse_unsigned_short(rRegI dst) %{
7375 match(Set dst (ReverseBytesUS dst));
7376
7377 format %{ "bswapl $dst\n\t"
7378 "shrl $dst,16\n\t" %}
7379 ins_encode %{
7380 __ bswapl($dst$$Register);
7381 __ shrl($dst$$Register, 16);
7382 %}
7383 ins_pipe( ialu_reg );
7384 %}
7385
7386 instruct bytes_reverse_short(rRegI dst) %{
7387 match(Set dst (ReverseBytesS dst));
7388
7389 format %{ "bswapl $dst\n\t"
7390 "sar $dst,16\n\t" %}
7391 ins_encode %{
7392 __ bswapl($dst$$Register);
7393 __ sarl($dst$$Register, 16);
7394 %}
7395 ins_pipe( ialu_reg );
7396 %}
7397
7374 instruct loadI_reversed(rRegI dst, memory src) %{ 7398 instruct loadI_reversed(rRegI dst, memory src) %{
7375 match(Set dst (ReverseBytesI (LoadI src))); 7399 match(Set dst (ReverseBytesI (LoadI src)));
7376 7400
7377 format %{ "bswap_movl $dst, $src" %} 7401 format %{ "bswap_movl $dst, $src" %}
7378 opcode(0x8B, 0x0F, 0xC8); /* Opcode 8B 0F C8 */ 7402 opcode(0x8B, 0x0F, 0xC8); /* Opcode 8B 0F C8 */