src/gallium/drivers/llvmpipe/lp_bld_struct.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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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(LLVMBuilderRef builder,
  46                     LLVMValueRef ptr,
  47                     unsigned member,
  48                     const char *name)
  49 {
  50    LLVMValueRef indices[2];
  51    LLVMValueRef member_ptr;
  52    LLVMValueRef res;
  53    indices[0] = LLVMConstInt(LLVMInt32Type(), 0, 0);
  54    indices[1] = LLVMConstInt(LLVMInt32Type(), member, 0);
  55    member_ptr = LLVMBuildGEP(builder, ptr, indices, Elements(indices), "");
  56    res = LLVMBuildLoad(builder, member_ptr, "");
  57    lp_build_name(res, "%s.%s", LLVMGetValueName(ptr), name);
  58    return res;
  59 }