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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* C - JIT interfaces
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#include <llvm-c/Transforms/Scalar.h>
#include "util/u_memory.h"
#include "util/u_cpu_detect.h"
#include "lp_screen.h"
#include "lp_bld_intr.h"
#include "lp_bld_misc.h"
#include "lp_jit.h"
static void
lp_jit_init_globals(struct llvmpipe_screen *screen)
{
LLVMTypeRef texture_type;
/* struct lp_jit_texture */
{
LLVMTypeRef elem_types[4];
elem_types[LP_JIT_TEXTURE_WIDTH] = LLVMInt32Type();
elem_types[LP_JIT_TEXTURE_HEIGHT] = LLVMInt32Type();
elem_types[LP_JIT_TEXTURE_STRIDE] = LLVMInt32Type();
elem_types[LP_JIT_TEXTURE_DATA] = LLVMPointerType(LLVMInt8Type(), 0);
texture_type = LLVMStructType(elem_types, Elements(elem_types), 0);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, width,
screen->target, texture_type,
LP_JIT_TEXTURE_WIDTH);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, height,
screen->target, texture_type,
LP_JIT_TEXTURE_HEIGHT);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, stride,
screen->target, texture_type,
LP_JIT_TEXTURE_STRIDE);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_texture, data,
screen->target, texture_type,
LP_JIT_TEXTURE_DATA);
LP_CHECK_STRUCT_SIZE(struct lp_jit_texture,
screen->target, texture_type);
LLVMAddTypeName(screen->module, "texture", texture_type);
}
/* struct lp_jit_context */
{
LLVMTypeRef elem_types[4];
LLVMTypeRef context_type;
elem_types[0] = LLVMPointerType(LLVMFloatType(), 0); /* constants */
elem_types[1] = LLVMFloatType(); /* alpha_ref_value */
elem_types[2] = LLVMPointerType(LLVMInt8Type(), 0); /* blend_color */
elem_types[3] = LLVMArrayType(texture_type, PIPE_MAX_SAMPLERS); /* textures */
context_type = LLVMStructType(elem_types, Elements(elem_types), 0);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, constants,
screen->target, context_type, 0);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, alpha_ref_value,
screen->target, context_type, 1);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color,
screen->target, context_type, 2);
LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures,
screen->target, context_type,
LP_JIT_CONTEXT_TEXTURES_INDEX);
LP_CHECK_STRUCT_SIZE(struct lp_jit_context,
screen->target, context_type);
LLVMAddTypeName(screen->module, "context", context_type);
screen->context_ptr_type = LLVMPointerType(context_type, 0);
}
#ifdef DEBUG
LLVMDumpModule(screen->module);
#endif
}
void
lp_jit_screen_cleanup(struct llvmpipe_screen *screen)
{
if(screen->engine)
LLVMDisposeExecutionEngine(screen->engine);
if(screen->pass)
LLVMDisposePassManager(screen->pass);
}
void
lp_jit_screen_init(struct llvmpipe_screen *screen)
{
char *error = NULL;
util_cpu_detect();
#if 0
/* For simulating less capable machines */
util_cpu_caps.has_sse3 = 0;
util_cpu_caps.has_ssse3 = 0;
util_cpu_caps.has_sse4_1 = 0;
#endif
LLVMLinkInJIT();
LLVMInitializeNativeTarget();
screen->module = LLVMModuleCreateWithName("llvmpipe");
screen->provider = LLVMCreateModuleProviderForExistingModule(screen->module);
if (LLVMCreateJITCompiler(&screen->engine, screen->provider, 1, &error)) {
_debug_printf("%s\n", error);
LLVMDisposeMessage(error);
assert(0);
}
screen->target = LLVMGetExecutionEngineTargetData(screen->engine);
screen->pass = LLVMCreateFunctionPassManager(screen->provider);
LLVMAddTargetData(screen->target, screen->pass);
/* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
* but there are more on SVN. */
/* TODO: Add more passes */
LLVMAddConstantPropagationPass(screen->pass);
if(util_cpu_caps.has_sse4_1) {
/* FIXME: There is a bug in this pass, whereby the combination of fptosi
* and sitofp (necessary for trunc/floor/ceil/round implementation)
* somehow becomes invalid code.
*/
LLVMAddInstructionCombiningPass(screen->pass);
}
LLVMAddPromoteMemoryToRegisterPass(screen->pass);
LLVMAddGVNPass(screen->pass);
LLVMAddCFGSimplificationPass(screen->pass);
lp_jit_init_globals(screen);
}
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