src/gallium/drivers/llvmpipe/lp_jit.c

   1 /**************************************************************************
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   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
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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
  12  * the following conditions:
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  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
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  25  *
  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 "gallivm/lp_bld_debug.h"
  42 #include "lp_debug.h"
  43 #include "lp_screen.h"
  44 #include "gallivm/lp_bld_intr.h"
  45 #include "lp_jit.h"
  46
  47
  48 static void
  49 lp_jit_init_globals(struct llvmpipe_screen *screen)
  50 {
  51    LLVMTypeRef texture_type;
  52
  53    /* struct lp_jit_texture */
  54    {
  55       LLVMTypeRef elem_types[LP_JIT_TEXTURE_NUM_FIELDS];
  56
  57       elem_types[LP_JIT_TEXTURE_WIDTH]  = LLVMInt32Type();
  58       elem_types[LP_JIT_TEXTURE_HEIGHT] = LLVMInt32Type();
  59       elem_types[LP_JIT_TEXTURE_DEPTH] = LLVMInt32Type();
  60       elem_types[LP_JIT_TEXTURE_LAST_LEVEL] = LLVMInt32Type();
  61       elem_types[LP_JIT_TEXTURE_ROW_STRIDE] =
  62          LLVMArrayType(LLVMInt32Type(), LP_MAX_TEXTURE_LEVELS);
  63       elem_types[LP_JIT_TEXTURE_IMG_STRIDE] =
  64          LLVMArrayType(LLVMInt32Type(), LP_MAX_TEXTURE_LEVELS);
  65       elem_types[LP_JIT_TEXTURE_DATA] =
  66          LLVMArrayType(LLVMPointerType(LLVMInt8Type(), 0),
  67                        LP_MAX_TEXTURE_LEVELS);
  68
  69       texture_type = LLVMStructType(elem_types, Elements(elem_types), 0);
  70
  71       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, width,
  72                              screen->target, texture_type,
  73                              LP_JIT_TEXTURE_WIDTH);
  74       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, height,
  75                              screen->target, texture_type,
  76                              LP_JIT_TEXTURE_HEIGHT);
  77       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, depth,
  78                              screen->target, texture_type,
  79                              LP_JIT_TEXTURE_DEPTH);
  80       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, last_level,
  81                              screen->target, texture_type,
  82                              LP_JIT_TEXTURE_LAST_LEVEL);
  83       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, row_stride,
  84                              screen->target, texture_type,
  85                              LP_JIT_TEXTURE_ROW_STRIDE);
  86       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, img_stride,
  87                              screen->target, texture_type,
  88                              LP_JIT_TEXTURE_IMG_STRIDE);
  89       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, data,
  90                              screen->target, texture_type,
  91                              LP_JIT_TEXTURE_DATA);
  92       LP_CHECK_STRUCT_SIZE(struct lp_jit_texture,
  93                            screen->target, texture_type);
  94
  95       LLVMAddTypeName(screen->module, "texture", texture_type);
  96    }
  97
  98    /* struct lp_jit_context */
  99    {
 100       LLVMTypeRef elem_types[LP_JIT_CTX_COUNT];
 101       LLVMTypeRef context_type;
 102
 103       elem_types[LP_JIT_CTX_CONSTANTS] = LLVMPointerType(LLVMFloatType(), 0);
 104       elem_types[LP_JIT_CTX_ALPHA_REF] = LLVMFloatType();
 105       elem_types[LP_JIT_CTX_STENCIL_REF_FRONT] = LLVMInt32Type();
 106       elem_types[LP_JIT_CTX_STENCIL_REF_BACK] = LLVMInt32Type();
 107       elem_types[LP_JIT_CTX_SCISSOR_XMIN] = LLVMFloatType();
 108       elem_types[LP_JIT_CTX_SCISSOR_YMIN] = LLVMFloatType();
 109       elem_types[LP_JIT_CTX_SCISSOR_XMAX] = LLVMFloatType();
 110       elem_types[LP_JIT_CTX_SCISSOR_YMAX] = LLVMFloatType();
 111       elem_types[LP_JIT_CTX_BLEND_COLOR] = LLVMPointerType(LLVMInt8Type(), 0);
 112       elem_types[LP_JIT_CTX_TEXTURES] = LLVMArrayType(texture_type,
 113                                                       PIPE_MAX_SAMPLERS);
 114
 115       context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
 116
 117       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, constants,
 118                              screen->target, context_type,
 119                              LP_JIT_CTX_CONSTANTS);
 120       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, alpha_ref_value,
 121                              screen->target, context_type,
 122                              LP_JIT_CTX_ALPHA_REF);
 123       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref_front,
 124                              screen->target, context_type,
 125                              LP_JIT_CTX_STENCIL_REF_FRONT);
 126       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref_back,
 127                              screen->target, context_type,
 128                              LP_JIT_CTX_STENCIL_REF_BACK);
 129       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_xmin,
 130                              screen->target, context_type,
 131                              LP_JIT_CTX_SCISSOR_XMIN);
 132       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_ymin,
 133                              screen->target, context_type,
 134                              LP_JIT_CTX_SCISSOR_YMIN);
 135       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_xmax,
 136                              screen->target, context_type,
 137                              LP_JIT_CTX_SCISSOR_XMAX);
 138       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_ymax,
 139                              screen->target, context_type,
 140                              LP_JIT_CTX_SCISSOR_YMAX);
 141       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color,
 142                              screen->target, context_type,
 143                              LP_JIT_CTX_BLEND_COLOR);
 144       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures,
 145                              screen->target, context_type,
 146                              LP_JIT_CTX_TEXTURES);
 147       LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
 148                            screen->target, context_type);
 149
 150       LLVMAddTypeName(screen->module, "context", context_type);
 151
 152       screen->context_ptr_type = LLVMPointerType(context_type, 0);
 153    }
 154
 155    if (gallivm_debug & GALLIVM_DEBUG_IR) {
 156       LLVMDumpModule(screen->module);
 157    }
 158 }
 159
 160
 161 void
 162 lp_jit_screen_cleanup(struct llvmpipe_screen *screen)
 163 {
 164    if(screen->engine)
 165       LLVMDisposeExecutionEngine(screen->engine);
 166
 167    if(screen->pass)
 168       LLVMDisposePassManager(screen->pass);
 169 }
 170
 171
 172 void
 173 lp_jit_screen_init(struct llvmpipe_screen *screen)
 174 {
 175    lp_build_init();
 176
 177    screen->module = lp_build_module;
 178    screen->provider = lp_build_provider;
 179    screen->engine = lp_build_engine;
 180    screen->target = lp_build_target;
 181
 182    screen->pass = LLVMCreateFunctionPassManager(screen->provider);
 183    LLVMAddTargetData(screen->target, screen->pass);
 184
 185    if ((gallivm_debug & GALLIVM_DEBUG_NO_OPT) == 0) {
 186       /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
 187        * but there are more on SVN. */
 188       /* TODO: Add more passes */
 189       LLVMAddCFGSimplificationPass(screen->pass);
 190       LLVMAddPromoteMemoryToRegisterPass(screen->pass);
 191       LLVMAddConstantPropagationPass(screen->pass);
 192       if(util_cpu_caps.has_sse4_1) {
 193          /* FIXME: There is a bug in this pass, whereby the combination of fptosi
 194           * and sitofp (necessary for trunc/floor/ceil/round implementation)
 195           * somehow becomes invalid code.
 196           */
 197          LLVMAddInstructionCombiningPass(screen->pass);
 198       }
 199       LLVMAddGVNPass(screen->pass);
 200    } else {
 201       /* We need at least this pass to prevent the backends to fail in
 202        * unexpected ways.
 203        */
 204       LLVMAddPromoteMemoryToRegisterPass(screen->pass);
 205    }
 206
 207    lp_jit_init_globals(screen);
 208 }