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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  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.
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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 "lp_screen.h"
  40 #include "lp_bld_intr.h"
  41 #include "lp_jit.h"
  42
  43
  44 static void
  45 lp_jit_init_globals(struct llvmpipe_screen *screen)
  46 {
  47    LLVMTypeRef texture_type;
  48
  49    /* struct lp_jit_texture */
  50    {
  51       LLVMTypeRef elem_types[4];
  52
  53       elem_types[LP_JIT_TEXTURE_WIDTH]  = LLVMInt32Type();
  54       elem_types[LP_JIT_TEXTURE_HEIGHT] = LLVMInt32Type();
  55       elem_types[LP_JIT_TEXTURE_STRIDE] = LLVMInt32Type();
  56       elem_types[LP_JIT_TEXTURE_DATA]   = LLVMPointerType(LLVMInt8Type(), 0);
  57
  58       texture_type = LLVMStructType(elem_types, Elements(elem_types), 0);
  59
  60       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, width,
  61                              screen->target, texture_type,
  62                              LP_JIT_TEXTURE_WIDTH);
  63       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, height,
  64                              screen->target, texture_type,
  65                              LP_JIT_TEXTURE_HEIGHT);
  66       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, stride,
  67                              screen->target, texture_type,
  68                              LP_JIT_TEXTURE_STRIDE);
  69       LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, data,
  70                              screen->target, texture_type,
  71                              LP_JIT_TEXTURE_DATA);
  72       LP_CHECK_STRUCT_SIZE(struct lp_jit_texture,
  73                            screen->target, texture_type);
  74
  75       LLVMAddTypeName(screen->module, "texture", texture_type);
  76    }
  77
  78    /* struct lp_jit_context */
  79    {
  80       LLVMTypeRef elem_types[5];
  81       LLVMTypeRef context_type;
  82
  83       elem_types[0] = LLVMPointerType(LLVMFloatType(), 0); /* constants */
  84       elem_types[1] = LLVMPointerType(LLVMInt8Type(), 0);  /* samplers */
  85       elem_types[2] = LLVMFloatType();                     /* alpha_ref_value */
  86       elem_types[3] = LLVMPointerType(LLVMInt8Type(), 0);  /* blend_color */
  87       elem_types[4] = LLVMArrayType(texture_type, PIPE_MAX_SAMPLERS); /* textures */
  88
  89       context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
  90
  91       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, constants,
  92                              screen->target, context_type, 0);
  93       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, samplers,
  94                              screen->target, context_type, 1);
  95       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, alpha_ref_value,
  96                              screen->target, context_type, 2);
  97       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color,
  98                              screen->target, context_type, 3);
  99       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures,
 100                              screen->target, context_type,
 101                              LP_JIT_CONTEXT_TEXTURES_INDEX);
 102       LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
 103                            screen->target, context_type);
 104
 105       LLVMAddTypeName(screen->module, "context", context_type);
 106
 107       screen->context_ptr_type = LLVMPointerType(context_type, 0);
 108    }
 109
 110    /* fetch_texel
 111     */
 112    {
 113       LLVMTypeRef ret_type;
 114       LLVMTypeRef arg_types[3];
 115       LLVMValueRef fetch_texel;
 116
 117       ret_type = LLVMVoidType();
 118       arg_types[0] = LLVMPointerType(LLVMInt8Type(), 0);  /* samplers */
 119       arg_types[1] = LLVMInt32Type();                     /* unit */
 120       arg_types[2] = LLVMPointerType(LLVMVectorType(LLVMFloatType(), 4), 0); /* store */
 121
 122       fetch_texel = lp_declare_intrinsic(screen->module, "fetch_texel",
 123                                          ret_type, arg_types, Elements(arg_types));
 124
 125       LLVMAddGlobalMapping(screen->engine, fetch_texel, lp_fetch_texel_soa);
 126    }
 127
 128 #ifdef DEBUG
 129    LLVMDumpModule(screen->module);
 130 #endif
 131 }
 132
 133
 134 void
 135 lp_jit_screen_cleanup(struct llvmpipe_screen *screen)
 136 {
 137    if(screen->engine)
 138       LLVMDisposeExecutionEngine(screen->engine);
 139
 140    if(screen->pass)
 141       LLVMDisposePassManager(screen->pass);
 142 }
 143
 144
 145 void
 146 lp_jit_screen_init(struct llvmpipe_screen *screen)
 147 {
 148    char *error = NULL;
 149
 150    screen->module = LLVMModuleCreateWithName("llvmpipe");
 151
 152    screen->provider = LLVMCreateModuleProviderForExistingModule(screen->module);
 153
 154    if (LLVMCreateJITCompiler(&screen->engine, screen->provider, 1, &error)) {
 155       _debug_printf("%s\n", error);
 156       LLVMDisposeMessage(error);
 157       abort();
 158    }
 159
 160    screen->target = LLVMGetExecutionEngineTargetData(screen->engine);
 161
 162    screen->pass = LLVMCreateFunctionPassManager(screen->provider);
 163    LLVMAddTargetData(screen->target, screen->pass);
 164    /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
 165     * but there are more on SVN. */
 166    LLVMAddConstantPropagationPass(screen->pass);
 167    LLVMAddInstructionCombiningPass(screen->pass);
 168    LLVMAddPromoteMemoryToRegisterPass(screen->pass);
 169    LLVMAddGVNPass(screen->pass);
 170    LLVMAddCFGSimplificationPass(screen->pass);
 171
 172    lp_jit_init_globals(screen);
 173 }