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1 /**************************************************************************
2  *
3  * Copyright 2009 VMware, Inc.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 
28 
29 /**
30  * @file
31  * Blend LLVM IR generation -- logic ops.
32  *
33  * @author Jose Fonseca <jfonseca@vmware.com>
34  */
35 
36 
37 #include "pipe/p_state.h"
38 #include "util/u_debug.h"
39 
40 #include "lp_bld_blend.h"
41 
42 
43 LLVMValueRef
lp_build_logicop(LLVMBuilderRef builder,unsigned logicop_func,LLVMValueRef src,LLVMValueRef dst)44 lp_build_logicop(LLVMBuilderRef builder,
45                  unsigned logicop_func,
46                  LLVMValueRef src,
47                  LLVMValueRef dst)
48 {
49    LLVMTypeRef type;
50    LLVMValueRef res;
51 
52    type = LLVMTypeOf(src);
53 
54    switch (logicop_func) {
55    case PIPE_LOGICOP_CLEAR:
56       res = LLVMConstNull(type);
57       break;
58    case PIPE_LOGICOP_NOR:
59       res = LLVMBuildNot(builder, LLVMBuildOr(builder, src, dst, ""), "");
60       break;
61    case PIPE_LOGICOP_AND_INVERTED:
62       res = LLVMBuildAnd(builder, LLVMBuildNot(builder, src, ""), dst, "");
63       break;
64    case PIPE_LOGICOP_COPY_INVERTED:
65       res = LLVMBuildNot(builder, src, "");
66       break;
67    case PIPE_LOGICOP_AND_REVERSE:
68       res = LLVMBuildAnd(builder, src, LLVMBuildNot(builder, dst, ""), "");
69       break;
70    case PIPE_LOGICOP_INVERT:
71       res = LLVMBuildNot(builder, dst, "");
72       break;
73    case PIPE_LOGICOP_XOR:
74       res = LLVMBuildXor(builder, src, dst, "");
75       break;
76    case PIPE_LOGICOP_NAND:
77       res = LLVMBuildNot(builder, LLVMBuildAnd(builder, src, dst, ""), "");
78       break;
79    case PIPE_LOGICOP_AND:
80       res = LLVMBuildAnd(builder, src, dst, "");
81       break;
82    case PIPE_LOGICOP_EQUIV:
83       res = LLVMBuildNot(builder, LLVMBuildXor(builder, src, dst, ""), "");
84       break;
85    case PIPE_LOGICOP_NOOP:
86       res = dst;
87       break;
88    case PIPE_LOGICOP_OR_INVERTED:
89       res = LLVMBuildOr(builder, LLVMBuildNot(builder, src, ""), dst, "");
90       break;
91    case PIPE_LOGICOP_COPY:
92       res = src;
93       break;
94    case PIPE_LOGICOP_OR_REVERSE:
95       res = LLVMBuildOr(builder, src, LLVMBuildNot(builder, dst, ""), "");
96       break;
97    case PIPE_LOGICOP_OR:
98       res = LLVMBuildOr(builder, src, dst, "");
99       break;
100    case PIPE_LOGICOP_SET:
101       res = LLVMConstAllOnes(type);
102       break;
103    default:
104       assert(0);
105       res = src;
106    }
107 
108    return res;
109 }
110