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comparison src/share/vm/opto/cfgnode.cpp @ 9154:886d1fd67dc3

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6443505: Ideal() function for CmpLTMask Summary: Repair wrong code generation, added new matching rule Reviewed-by: kvn, twisti
author drchase
date Fri, 12 Apr 2013 19:14:47 -0700
parents d092d1b31229
children 6f3fd5150b67
comparison
equal deleted inserted replaced
9153:bc63dd2539a4 9154:886d1fd67dc3
1 /* 1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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.
1304 op != Op_XorI && 1304 op != Op_XorI &&
1305 op != Op_OrI*/ ) 1305 op != Op_OrI*/ )
1306 return NULL; 1306 return NULL;
1307 1307
1308 Node *x = n2; 1308 Node *x = n2;
1309 Node *y = n1->in(1); 1309 Node *y = NULL;
1310 if( n2 == n1->in(1) ) { 1310 if( x == n1->in(1) ) {
1311 y = n1->in(2); 1311 y = n1->in(2);
1312 } else if( n2 == n1->in(1) ) { 1312 } else if( x == n1->in(2) ) {
1313 y = n1->in(1);
1313 } else return NULL; 1314 } else return NULL;
1314 1315
1315 // Not so profitable if compare and add are constants 1316 // Not so profitable if compare and add are constants
1316 if( q->is_Con() && phase->type(q) != TypeInt::ZERO && y->is_Con() ) 1317 if( q->is_Con() && phase->type(q) != TypeInt::ZERO && y->is_Con() )
1317 return NULL; 1318 return NULL;