src/gallium/drivers/llvmpipe/lp_jit.c

   1 /**************************************************************************
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   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
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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
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  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  *
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  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_screen.h"
  43 #include "gallivm/lp_bld_intr.h"
  44 #include "lp_jit.h"
  45
  46
  47 static void
  48 lp_jit_init_globals(struct llvmpipe_screen *screen)
  49 {
  50    LLVMTypeRef texture_type;
  51
  52    /* struct lp_jit_texture */
  53    {
  54       LLVMTypeRef elem_types[LP_JIT_TEXTURE_NUM_FIELDS];
  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_ROW_STRIDE] =
  61          LLVMArrayType(LLVMInt32Type(), LP_MAX_TEXTURE_LEVELS);
  62       elem_types[LP_JIT_TEXTURE_IMG_STRIDE] =
  63          LLVMArrayType(LLVMInt32Type(), LP_MAX_TEXTURE_LEVELS);
  64       elem_types[LP_JIT_TEXTURE_DATA] =
  65          LLVMArrayType(LLVMPointerType(LLVMInt8Type(), 0),
  66                        LP_MAX_TEXTURE_LEVELS);
  67       elem_types[LP_JIT_TEXTURE_MIN_LOD] = LLVMFloatType();
  68       elem_types[LP_JIT_TEXTURE_MAX_LOD] = LLVMFloatType();
  69       elem_types[LP_JIT_TEXTURE_LOD_BIAS] = LLVMFloatType();
  70       elem_types[LP_JIT_TEXTURE_BORDER_COLOR] =
  71          LLVMArrayType(LLVMFloatType(), 4);
  72
  73       texture_type = LLVMStructType(elem_types, Elements(elem_types), 0);
  74
  75       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, width,
  76                              screen->target, texture_type,
  77                              LP_JIT_TEXTURE_WIDTH);
  78       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, height,
  79                              screen->target, texture_type,
  80                              LP_JIT_TEXTURE_HEIGHT);
  81       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, depth,
  82                              screen->target, texture_type,
  83                              LP_JIT_TEXTURE_DEPTH);
  84       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, last_level,
  85                              screen->target, texture_type,
  86                              LP_JIT_TEXTURE_LAST_LEVEL);
  87       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, row_stride,
  88                              screen->target, texture_type,
  89                              LP_JIT_TEXTURE_ROW_STRIDE);
  90       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, img_stride,
  91                              screen->target, texture_type,
  92                              LP_JIT_TEXTURE_IMG_STRIDE);
  93       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, data,
  94                              screen->target, texture_type,
  95                              LP_JIT_TEXTURE_DATA);
  96       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, min_lod,
  97                              screen->target, texture_type,
  98                              LP_JIT_TEXTURE_MIN_LOD);
  99       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, max_lod,
 100                              screen->target, texture_type,
 101                              LP_JIT_TEXTURE_MAX_LOD);
 102       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, lod_bias,
 103                              screen->target, texture_type,
 104                              LP_JIT_TEXTURE_LOD_BIAS);
 105       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, border_color,
 106                              screen->target, texture_type,
 107                              LP_JIT_TEXTURE_BORDER_COLOR);
 108
 109       LP_CHECK_STRUCT_SIZE(struct lp_jit_texture,
 110                            screen->target, texture_type);
 111
 112       LLVMAddTypeName(screen->module, "texture", texture_type);
 113    }
 114
 115    /* struct lp_jit_context */
 116    {
 117       LLVMTypeRef elem_types[LP_JIT_CTX_COUNT];
 118       LLVMTypeRef context_type;
 119
 120       elem_types[LP_JIT_CTX_CONSTANTS] = LLVMPointerType(LLVMFloatType(), 0);
 121       elem_types[LP_JIT_CTX_ALPHA_REF] = LLVMFloatType();
 122       elem_types[LP_JIT_CTX_STENCIL_REF_FRONT] = LLVMInt32Type();
 123       elem_types[LP_JIT_CTX_STENCIL_REF_BACK] = LLVMInt32Type();
 124       elem_types[LP_JIT_CTX_BLEND_COLOR] = LLVMPointerType(LLVMInt8Type(), 0);
 125       elem_types[LP_JIT_CTX_TEXTURES] = LLVMArrayType(texture_type,
 126                                                       PIPE_MAX_SAMPLERS);
 127
 128       context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
 129
 130       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, constants,
 131                              screen->target, context_type,
 132                              LP_JIT_CTX_CONSTANTS);
 133       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, alpha_ref_value,
 134                              screen->target, context_type,
 135                              LP_JIT_CTX_ALPHA_REF);
 136       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref_front,
 137                              screen->target, context_type,
 138                              LP_JIT_CTX_STENCIL_REF_FRONT);
 139       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref_back,
 140                              screen->target, context_type,
 141                              LP_JIT_CTX_STENCIL_REF_BACK);
 142       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color,
 143                              screen->target, context_type,
 144                              LP_JIT_CTX_BLEND_COLOR);
 145       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures,
 146                              screen->target, context_type,
 147                              LP_JIT_CTX_TEXTURES);
 148       LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
 149                            screen->target, context_type);
 150
 151       LLVMAddTypeName(screen->module, "context", context_type);
 152
 153       screen->context_ptr_type = LLVMPointerType(context_type, 0);
 154    }
 155
 156    if (gallivm_debug & GALLIVM_DEBUG_IR) {
 157       LLVMDumpModule(screen->module);
 158    }
 159 }
 160
 161
 162 void
 163 lp_jit_screen_cleanup(struct llvmpipe_screen *screen)
 164 {
 165    if(screen->engine)
 166       LLVMDisposeExecutionEngine(screen->engine);
 167
 168    if(screen->pass)
 169       LLVMDisposePassManager(screen->pass);
 170 }
 171
 172
 173 void
 174 lp_jit_screen_init(struct llvmpipe_screen *screen)
 175 {
 176    lp_build_init();
 177
 178    screen->module = lp_build_module;
 179    screen->provider = lp_build_provider;
 180    screen->engine = lp_build_engine;
 181    screen->target = lp_build_target;
 182
 183    screen->pass = LLVMCreateFunctionPassManager(screen->provider);
 184    LLVMAddTargetData(screen->target, screen->pass);
 185
 186    if ((gallivm_debug & GALLIVM_DEBUG_NO_OPT) == 0) {
 187       /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
 188        * but there are more on SVN. */
 189       /* TODO: Add more passes */
 190       LLVMAddCFGSimplificationPass(screen->pass);
 191       LLVMAddPromoteMemoryToRegisterPass(screen->pass);
 192       LLVMAddConstantPropagationPass(screen->pass);
 193       if(util_cpu_caps.has_sse4_1) {
 194          /* FIXME: There is a bug in this pass, whereby the combination of fptosi
 195           * and sitofp (necessary for trunc/floor/ceil/round implementation)
 196           * somehow becomes invalid code.
 197           */
 198          LLVMAddInstructionCombiningPass(screen->pass);
 199       }
 200       LLVMAddGVNPass(screen->pass);
 201    } else {
 202       /* We need at least this pass to prevent the backends to fail in
 203        * unexpected ways.
 204        */
 205       LLVMAddPromoteMemoryToRegisterPass(screen->pass);
 206    }
 207
 208    lp_jit_init_globals(screen);
 209 }