src/gallium/drivers/llvmpipe/lp_jit.c

   1 /**************************************************************************
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   3  * Copyright 2009 VMware, Inc.
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  16  * of the Software.
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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 "lp_screen.h"
  39 #include "lp_jit.h"
  40
  41
  42 void
  43 lp_jit_screen_cleanup(struct llvmpipe_screen *screen)
  44 {
  45    if(screen->engine)
  46       LLVMDisposeExecutionEngine(screen->engine);
  47
  48    if(screen->pass)
  49       LLVMDisposePassManager(screen->pass);
  50 }
  51
  52
  53 void
  54 lp_jit_screen_init(struct llvmpipe_screen *screen)
  55 {
  56    char *error = NULL;
  57
  58    screen->module = LLVMModuleCreateWithName("llvmpipe");
  59
  60    screen->provider = LLVMCreateModuleProviderForExistingModule(screen->module);
  61
  62    if (LLVMCreateJITCompiler(&screen->engine, screen->provider, 1, &error)) {
  63       fprintf(stderr, "%s\n", error);
  64       LLVMDisposeMessage(error);
  65       abort();
  66    }
  67
  68    screen->pass = LLVMCreateFunctionPassManager(screen->provider);
  69    LLVMAddTargetData(LLVMGetExecutionEngineTargetData(screen->engine), screen->pass);
  70    /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
  71     * but there are more on SVN. */
  72    LLVMAddConstantPropagationPass(screen->pass);
  73    LLVMAddInstructionCombiningPass(screen->pass);
  74    LLVMAddPromoteMemoryToRegisterPass(screen->pass);
  75    LLVMAddGVNPass(screen->pass);
  76    LLVMAddCFGSimplificationPass(screen->pass);
  77 }