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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,
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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
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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     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 (at) 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
     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