lp_bld_init.c revision 55948247ebd6b37b9ac1869992eb2f765dd62912 
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
37unsigned gallivm_debug = 0;
38
39static const struct debug_named_value lp_bld_debug_flags[] = {
40   { "tgsi",   GALLIVM_DEBUG_TGSI, NULL },
41   { "ir",     GALLIVM_DEBUG_IR, NULL },
42   { "asm",    GALLIVM_DEBUG_ASM, NULL },
43   { "nopt",   GALLIVM_DEBUG_NO_OPT, NULL },
44   DEBUG_NAMED_VALUE_END
45};
46#endif
47
48
49LLVMModuleRef lp_build_module = NULL;
50LLVMExecutionEngineRef lp_build_engine = NULL;
51LLVMModuleProviderRef lp_build_provider = NULL;
52LLVMTargetDataRef 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 */
64enum 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
78extern void
79lp_register_oprofile_jit_event_listener(LLVMExecutionEngineRef EE);
80
81
82void
83lp_build_init(void)
84{
85#ifdef DEBUG
86   gallivm_debug = debug_get_flags_option("GALLIVM_DEBUG", lp_bld_debug_flags, 0 );
87#endif
88
89   LLVMInitializeNativeTarget();
90
91   LLVMLinkInJIT();
92
93   if (!lp_build_module)
94      lp_build_module = LLVMModuleCreateWithName("gallivm");
95
96   if (!lp_build_provider)
97      lp_build_provider = LLVMCreateModuleProviderForExistingModule(lp_build_module);
98
99   if (!lp_build_engine) {
100      enum LLVM_CodeGenOpt_Level optlevel;
101      char *error = NULL;
102
103      if (gallivm_debug & GALLIVM_DEBUG_NO_OPT) {
104         optlevel = None;
105      }
106      else {
107         optlevel = Default;
108      }
109
110      if (LLVMCreateJITCompiler(&lp_build_engine, lp_build_provider,
111                                (unsigned)optlevel, &error)) {
112         _debug_printf("%s\n", error);
113         LLVMDisposeMessage(error);
114         assert(0);
115      }
116
117#if defined(DEBUG) || defined(PROFILE)
118      lp_register_oprofile_jit_event_listener(lp_build_engine);
119#endif
120   }
121
122   if (!lp_build_target)
123      lp_build_target = LLVMGetExecutionEngineTargetData(lp_build_engine);
124
125   util_cpu_detect();
126
127#if 0
128   /* For simulating less capable machines */
129   util_cpu_caps.has_sse3 = 0;
130   util_cpu_caps.has_ssse3 = 0;
131   util_cpu_caps.has_sse4_1 = 0;
132#endif
133}
134
135
136/*
137 * Hack to allow the linking of release LLVM static libraries on a debug build.
138 *
139 * See also:
140 * - http://social.msdn.microsoft.com/Forums/en-US/vclanguage/thread/7234ea2b-0042-42ed-b4e2-5d8644dfb57d
141 */
142#if defined(_MSC_VER) && defined(_DEBUG)
143#include <crtdefs.h>
144_CRTIMP void __cdecl
145_invalid_parameter_noinfo(void) {}
146#endif
147