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