src/gallium/auxiliary/gallivm/lp_bld_struct.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
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   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  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
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  27
  28
  29 /**
  30  * @file
  31  * Helper functions for manipulation structures.
  32  *
  33  * @author Jose Fonseca <jfonseca@vmware.com>
  34  */
  35
  36
  37 #include "util/u_debug.h"
  38 #include "util/u_memory.h"
  39
  40 #include "lp_bld_debug.h"
  41 #include "lp_bld_struct.h"
  42
  43
  44 LLVMValueRef
  45 lp_build_struct_get_ptr(LLVMBuilderRef builder,
  46                         LLVMValueRef ptr,
  47                         unsigned member,
  48                         const char *name)
  49 {
  50    LLVMValueRef indices[2];
  51    LLVMValueRef member_ptr;
  52    indices[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
  53    indices[1] = LLVMConstInt(LLVMInt32Type(), member, 0);
  54    member_ptr = LLVMBuildGEP(builder, ptr, indices, Elements(indices), "");
  55    lp_build_name(member_ptr, "%s.%s_ptr", LLVMGetValueName(ptr), name);
  56    return member_ptr;
  57 }
  58
  59
  60 LLVMValueRef
  61 lp_build_struct_get(LLVMBuilderRef builder,
  62                     LLVMValueRef ptr,
  63                     unsigned member,
  64                     const char *name)
  65 {
  66    LLVMValueRef member_ptr;
  67    LLVMValueRef res;
  68    member_ptr = lp_build_struct_get_ptr(builder, ptr, member, name);
  69    res = LLVMBuildLoad(builder, member_ptr, "");
  70    lp_build_name(res, "%s.%s", LLVMGetValueName(ptr), name);
  71    return res;
  72 }