lp_jit.c revision cdc920a0 
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
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23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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26 **************************************************************************/
27
28/**
29 * @file
30 * C - JIT interfaces
31 *
32 * @author Jose Fonseca <jfonseca@vmware.com>
33 */
34
35
36#include <llvm-c/Transforms/Scalar.h>
37
38#include "util/u_memory.h"
39#include "util/u_cpu_detect.h"
40#include "gallivm/lp_bld_init.h"
41#include "lp_debug.h"
42#include "lp_screen.h"
43#include "gallivm/lp_bld_intr.h"
44#include "lp_jit.h"
45
46
47static void
48lp_jit_init_globals(struct llvmpipe_screen *screen)
49{
50   LLVMTypeRef texture_type;
51
52   /* struct lp_jit_texture */
53   {
54      LLVMTypeRef elem_types[6];
55
56      elem_types[LP_JIT_TEXTURE_WIDTH]  = LLVMInt32Type();
57      elem_types[LP_JIT_TEXTURE_HEIGHT] = LLVMInt32Type();
58      elem_types[LP_JIT_TEXTURE_DEPTH] = LLVMInt32Type();
59      elem_types[LP_JIT_TEXTURE_LAST_LEVEL] = LLVMInt32Type();
60      elem_types[LP_JIT_TEXTURE_STRIDE] = LLVMInt32Type();
61      elem_types[LP_JIT_TEXTURE_DATA]   = LLVMPointerType(LLVMInt8Type(), 0);
62
63      texture_type = LLVMStructType(elem_types, Elements(elem_types), 0);
64
65      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, width,
66                             screen->target, texture_type,
67                             LP_JIT_TEXTURE_WIDTH);
68      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, height,
69                             screen->target, texture_type,
70                             LP_JIT_TEXTURE_HEIGHT);
71      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, depth,
72                             screen->target, texture_type,
73                             LP_JIT_TEXTURE_DEPTH);
74      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, last_level,
75                             screen->target, texture_type,
76                             LP_JIT_TEXTURE_LAST_LEVEL);
77      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, stride,
78                             screen->target, texture_type,
79                             LP_JIT_TEXTURE_STRIDE);
80      LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, data,
81                             screen->target, texture_type,
82                             LP_JIT_TEXTURE_DATA);
83      LP_CHECK_STRUCT_SIZE(struct lp_jit_texture,
84                           screen->target, texture_type);
85
86      LLVMAddTypeName(screen->module, "texture", texture_type);
87   }
88
89   /* struct lp_jit_context */
90   {
91      LLVMTypeRef elem_types[8];
92      LLVMTypeRef context_type;
93
94      elem_types[0] = LLVMPointerType(LLVMFloatType(), 0); /* constants */
95      elem_types[1] = LLVMFloatType();                     /* alpha_ref_value */      elem_types[2] = LLVMFloatType();                     /* scissor_xmin */
96      elem_types[3] = LLVMFloatType();                     /* scissor_ymin */
97      elem_types[4] = LLVMFloatType();                     /* scissor_xmax */
98      elem_types[5] = LLVMFloatType();                     /* scissor_ymax */
99      elem_types[6] = LLVMPointerType(LLVMInt8Type(), 0);  /* blend_color */
100      elem_types[7] = LLVMArrayType(texture_type, PIPE_MAX_SAMPLERS); /* textures */
101
102      context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
103
104      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, constants,
105                             screen->target, context_type, 0);
106      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, alpha_ref_value,
107                             screen->target, context_type, 1);
108      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_xmin,
109                             screen->target, context_type, 2);
110      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_ymin,
111                             screen->target, context_type, 3);
112      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_xmax,
113                             screen->target, context_type, 4);
114      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_ymax,
115                             screen->target, context_type, 5);
116      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color,
117                             screen->target, context_type, 6);
118      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures,
119                             screen->target, context_type,
120                             LP_JIT_CONTEXT_TEXTURES_INDEX);
121      LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
122                           screen->target, context_type);
123
124      LLVMAddTypeName(screen->module, "context", context_type);
125
126      screen->context_ptr_type = LLVMPointerType(context_type, 0);
127   }
128
129#ifdef DEBUG
130   LLVMDumpModule(screen->module);
131#endif
132}
133
134
135void
136lp_jit_screen_cleanup(struct llvmpipe_screen *screen)
137{
138   if(screen->engine)
139      LLVMDisposeExecutionEngine(screen->engine);
140
141   if(screen->pass)
142      LLVMDisposePassManager(screen->pass);
143}
144
145
146void
147lp_jit_screen_init(struct llvmpipe_screen *screen)
148{
149   char *error = NULL;
150
151   util_cpu_detect();
152
153#if 0
154   /* For simulating less capable machines */
155   util_cpu_caps.has_sse3 = 0;
156   util_cpu_caps.has_ssse3 = 0;
157   util_cpu_caps.has_sse4_1 = 0;
158#endif
159
160   lp_build_init();
161
162   screen->module = LLVMModuleCreateWithName("llvmpipe");
163
164   screen->provider = LLVMCreateModuleProviderForExistingModule(screen->module);
165
166   if (LLVMCreateJITCompiler(&screen->engine, screen->provider, 1, &error)) {
167      _debug_printf("%s\n", error);
168      LLVMDisposeMessage(error);
169      assert(0);
170   }
171
172   screen->target = LLVMGetExecutionEngineTargetData(screen->engine);
173
174   screen->pass = LLVMCreateFunctionPassManager(screen->provider);
175   LLVMAddTargetData(screen->target, screen->pass);
176
177   if ((LP_DEBUG & DEBUG_NO_LLVM_OPT) == 0) {
178      /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
179       * but there are more on SVN. */
180      /* TODO: Add more passes */
181      LLVMAddConstantPropagationPass(screen->pass);
182      if(util_cpu_caps.has_sse4_1) {
183         /* FIXME: There is a bug in this pass, whereby the combination of fptosi
184          * and sitofp (necessary for trunc/floor/ceil/round implementation)
185          * somehow becomes invalid code.
186          */
187         LLVMAddInstructionCombiningPass(screen->pass);
188      }
189      LLVMAddPromoteMemoryToRegisterPass(screen->pass);
190      LLVMAddGVNPass(screen->pass);
191      LLVMAddCFGSimplificationPass(screen->pass);
192   }
193
194   lp_jit_init_globals(screen);
195}
196