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,
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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
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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
43LLVMValueRef
44lp_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