src/gallium/auxiliary/gallivm/lp_bld_init.c

   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 #include "pipe/p_compiler.h"
  30 #include "util/u_cpu_detect.h"
  31 #include "util/u_debug.h"
  32 #include "lp_bld_debug.h"
  33 #include "lp_bld_init.h"
  34
  35
  36 #ifdef DEBUG
  37 unsigned gallivm_debug = 0;
  38
  39 static const struct debug_named_value lp_bld_debug_flags[] = {
  40    { "tgsi",   GALLIVM_DEBUG_TGSI },
  41    { "ir",     GALLIVM_DEBUG_IR },
  42    { "asm",    GALLIVM_DEBUG_ASM },
  43    { "nopt",   GALLIVM_DEBUG_NO_OPT },
  44    {NULL, 0}
  45 };
  46 #endif
  47
  48
  49 LLVMModuleRef lp_build_module = NULL;
  50 LLVMExecutionEngineRef lp_build_engine = NULL;
  51 LLVMModuleProviderRef lp_build_provider = NULL;
  52 LLVMTargetDataRef lp_build_target = NULL;
  53
  54
  55 /*
  56  * Optimization values are:
  57  * - 0: None (-O0)
  58  * - 1: Less (-O1)
  59  * - 2: Default (-O2, -Os)
  60  * - 3: Aggressive (-O3)
  61  *
  62  * See also CodeGenOpt::Level in llvm/Target/TargetMachine.h
  63  */
  64 enum LLVM_CodeGenOpt_Level {
  65 #if HAVE_LLVM >= 0x207
  66    None,        // -O0
  67    Less,        // -O1
  68    Default,     // -O2, -Os
  69    Aggressive   // -O3
  70 #else
  71    Default,
  72    None,
  73    Aggressive
  74 #endif
  75 };
  76
  77
  78 void
  79 lp_build_init(void)
  80 {
  81 #ifdef DEBUG
  82    gallivm_debug = debug_get_flags_option("GALLIVM_DEBUG", lp_bld_debug_flags, 0 );
  83 #endif
  84
  85    LLVMInitializeNativeTarget();
  86
  87    LLVMLinkInJIT();
  88
  89    if (!lp_build_module)
  90       lp_build_module = LLVMModuleCreateWithName("gallivm");
  91
  92    if (!lp_build_provider)
  93       lp_build_provider = LLVMCreateModuleProviderForExistingModule(lp_build_module);
  94
  95    if (!lp_build_engine) {
  96       enum LLVM_CodeGenOpt_Level optlevel;
  97       char *error = NULL;
  98
  99       if (gallivm_debug & GALLIVM_DEBUG_NO_OPT) {
 100          optlevel = None;
 101       }
 102       else {
 103          optlevel = Default;
 104       }
 105
 106       if (LLVMCreateJITCompiler(&lp_build_engine, lp_build_provider,
 107                                 (unsigned)optlevel, &error)) {
 108          _debug_printf("%s\n", error);
 109          LLVMDisposeMessage(error);
 110          assert(0);
 111       }
 112    }
 113
 114    if (!lp_build_target)
 115       lp_build_target = LLVMGetExecutionEngineTargetData(lp_build_engine);
 116
 117    util_cpu_detect();
 118
 119 #if 0
 120    /* For simulating less capable machines */
 121    util_cpu_caps.has_sse3 = 0;
 122    util_cpu_caps.has_ssse3 = 0;
 123    util_cpu_caps.has_sse4_1 = 0;
 124 #endif
 125 }
 126
 127
 128 /*
 129  * Hack to allow the linking of release LLVM static libraries on a debug build.
 130  *
 131  * See also:
 132  * - http://social.msdn.microsoft.com/Forums/en-US/vclanguage/thread/7234ea2b-0042-42ed-b4e2-5d8644dfb57d
 133  */
 134 #if defined(_MSC_VER) && defined(_DEBUG)
 135 #include <crtdefs.h>
 136 _CRTIMP void __cdecl
 137 _invalid_parameter_noinfo(void) {}
 138 #endif