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+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Zack Rusin zack@tungstengraphics.com
+ */
+#ifdef MESA_LLVM
+
+#include "gallivm.h"
+#include "gallivm_p.h"
+
+#include "instructions.h"
+#include "loweringpass.h"
+#include "storage.h"
+#include "tgsitollvm.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_shader_tokens.h"
+
+#include "tgsi/tgsi_exec.h"
+#include "tgsi/tgsi_dump.h"
+
+#include <llvm/Module.h>
+#include <llvm/CallingConv.h>
+#include <llvm/Constants.h>
+#include <llvm/DerivedTypes.h>
+#include <llvm/Instructions.h>
+#include <llvm/ModuleProvider.h>
+#include <llvm/Pass.h>
+#include <llvm/PassManager.h>
+#include <llvm/ParameterAttributes.h>
+#include <llvm/Support/PatternMatch.h>
+#include <llvm/ExecutionEngine/JIT.h>
+#include <llvm/ExecutionEngine/Interpreter.h>
+#include <llvm/ExecutionEngine/GenericValue.h>
+#include <llvm/Support/MemoryBuffer.h>
+#include <llvm/LinkAllPasses.h>
+#include <llvm/Analysis/Verifier.h>
+#include <llvm/Analysis/LoopPass.h>
+#include <llvm/Target/TargetData.h>
+#include <llvm/Bitcode/ReaderWriter.h>
+#include <llvm/Transforms/Utils/Cloning.h>
+
+#include <sstream>
+#include <fstream>
+#include <iostream>
+
+static int GLOBAL_ID = 0;
+
+using namespace llvm;
+
+static inline
+void AddStandardCompilePasses(PassManager &PM)
+{
+ PM.add(new LoweringPass());
+ PM.add(createVerifierPass()); // Verify that input is correct
+
+ PM.add(createLowerSetJmpPass()); // Lower llvm.setjmp/.longjmp
+
+ //PM.add(createStripSymbolsPass(true));
+
+ PM.add(createRaiseAllocationsPass()); // call %malloc -> malloc inst
+ PM.add(createCFGSimplificationPass()); // Clean up disgusting code
+ PM.add(createPromoteMemoryToRegisterPass());// Kill useless allocas
+ PM.add(createGlobalOptimizerPass()); // Optimize out global vars
+ PM.add(createGlobalDCEPass()); // Remove unused fns and globs
+ PM.add(createIPConstantPropagationPass());// IP Constant Propagation
+ PM.add(createDeadArgEliminationPass()); // Dead argument elimination
+ PM.add(createInstructionCombiningPass()); // Clean up after IPCP & DAE
+ PM.add(createCFGSimplificationPass()); // Clean up after IPCP & DAE
+
+ PM.add(createPruneEHPass()); // Remove dead EH info
+
+ PM.add(createFunctionInliningPass()); // Inline small functions
+ PM.add(createArgumentPromotionPass()); // Scalarize uninlined fn args
+
+ PM.add(createTailDuplicationPass()); // Simplify cfg by copying code
+ PM.add(createInstructionCombiningPass()); // Cleanup for scalarrepl.
+ PM.add(createCFGSimplificationPass()); // Merge & remove BBs
+ PM.add(createScalarReplAggregatesPass()); // Break up aggregate allocas
+ PM.add(createInstructionCombiningPass()); // Combine silly seq's
+ PM.add(createCondPropagationPass()); // Propagate conditionals
+
+ PM.add(createTailCallEliminationPass()); // Eliminate tail calls
+ PM.add(createCFGSimplificationPass()); // Merge & remove BBs
+ PM.add(createReassociatePass()); // Reassociate expressions
+ PM.add(createLoopRotatePass());
+ PM.add(createLICMPass()); // Hoist loop invariants
+ PM.add(createLoopUnswitchPass()); // Unswitch loops.
+ PM.add(createLoopIndexSplitPass()); // Index split loops.
+ PM.add(createInstructionCombiningPass()); // Clean up after LICM/reassoc
+ PM.add(createIndVarSimplifyPass()); // Canonicalize indvars
+ PM.add(createLoopUnrollPass()); // Unroll small loops
+ PM.add(createInstructionCombiningPass()); // Clean up after the unroller
+ PM.add(createGVNPass()); // Remove redundancies
+ PM.add(createSCCPPass()); // Constant prop with SCCP
+
+ // Run instcombine after redundancy elimination to exploit opportunities
+ // opened up by them.
+ PM.add(createInstructionCombiningPass());
+ PM.add(createCondPropagationPass()); // Propagate conditionals
+
+ PM.add(createDeadStoreEliminationPass()); // Delete dead stores
+ PM.add(createAggressiveDCEPass()); // SSA based 'Aggressive DCE'
+ PM.add(createCFGSimplificationPass()); // Merge & remove BBs
+ PM.add(createSimplifyLibCallsPass()); // Library Call Optimizations
+ PM.add(createDeadTypeEliminationPass()); // Eliminate dead types
+ PM.add(createConstantMergePass()); // Merge dup global constants
+}
+
+void gallivm_prog_delete(struct gallivm_prog *prog)
+{
+ delete prog->module;
+ prog->module = 0;
+ prog->function = 0;
+ free(prog);
+}
+
+static inline void
+constant_interpolation(float (*inputs)[16][4],
+ const struct tgsi_interp_coef *coefs,
+ unsigned attrib,
+ unsigned chan)
+{
+ unsigned i;
+
+ for (i = 0; i < QUAD_SIZE; ++i) {
+ inputs[i][attrib][chan] = coefs[attrib].a0[chan];
+ }
+}
+
+static inline void
+linear_interpolation(float (*inputs)[16][4],
+ const struct tgsi_interp_coef *coefs,
+ unsigned attrib,
+ unsigned chan)
+{
+ unsigned i;
+
+ for( i = 0; i < QUAD_SIZE; i++ ) {
+ const float x = inputs[i][0][0];
+ const float y = inputs[i][0][1];
+
+ inputs[i][attrib][chan] =
+ coefs[attrib].a0[chan] +
+ coefs[attrib].dadx[chan] * x +
+ coefs[attrib].dady[chan] * y;
+ }
+}
+
+static inline void
+perspective_interpolation(float (*inputs)[16][4],
+ const struct tgsi_interp_coef *coefs,
+ unsigned attrib,
+ unsigned chan )
+{
+ unsigned i;
+
+ for( i = 0; i < QUAD_SIZE; i++ ) {
+ const float x = inputs[i][0][0];
+ const float y = inputs[i][0][1];
+ /* WPOS.w here is really 1/w */
+ const float w = 1.0f / inputs[i][0][3];
+ assert(inputs[i][0][3] != 0.0);
+
+ inputs[i][attrib][chan] =
+ (coefs[attrib].a0[chan] +
+ coefs[attrib].dadx[chan] * x +
+ coefs[attrib].dady[chan] * y) * w;
+ }
+}
+
+void gallivm_ir_dump(struct gallivm_ir *ir, const char *file_prefix)
+{
+ if (!ir || !ir->module)
+ return;
+
+ if (file_prefix) {
+ std::ostringstream stream;
+ stream << file_prefix;
+ stream << ir->id;
+ stream << ".ll";
+ std::string name = stream.str();
+ std::ofstream out(name.c_str());
+ if (!out) {
+ std::cerr<<"Can't open file : "<<stream.str()<<std::endl;;
+ return;
+ }
+ out << (*ir->module);
+ out.close();
+ } else {
+ const llvm::Module::FunctionListType &funcs = ir->module->getFunctionList();
+ llvm::Module::FunctionListType::const_iterator itr;
+ std::cout<<"; ---------- Start shader "<<ir->id<<std::endl;
+ for (itr = funcs.begin(); itr != funcs.end(); ++itr) {
+ const llvm::Function &func = (*itr);
+ std::string name = func.getName();
+ const llvm::Function *found = 0;
+ if (name.find("vs_shader") != std::string::npos ||
+ name.find("fs_shader") != std::string::npos ||
+ name.find("function") != std::string::npos)
+ found = &func;
+ if (found) {
+ std::cout<<*found<<std::endl;
+ }
+ }
+ std::cout<<"; ---------- End shader "<<ir->id<<std::endl;
+ }
+}
+
+
+void gallivm_prog_inputs_interpolate(struct gallivm_prog *prog,
+ float (*inputs)[16][4],
+ const struct tgsi_interp_coef *coef)
+{
+ for (int i = 0; i < prog->num_interp; ++i) {
+ const gallivm_interpolate &interp = prog->interpolators[i];
+ switch (interp.type) {
+ case TGSI_INTERPOLATE_CONSTANT:
+ constant_interpolation(inputs, coef, interp.attrib, interp.chan);
+ break;
+
+ case TGSI_INTERPOLATE_LINEAR:
+ linear_interpolation(inputs, coef, interp.attrib, interp.chan);
+ break;
+
+ case TGSI_INTERPOLATE_PERSPECTIVE:
+ perspective_interpolation(inputs, coef, interp.attrib, interp.chan);
+ break;
+
+ default:
+ assert( 0 );
+ }
+ }
+}
+
+
+struct gallivm_ir * gallivm_ir_new(enum gallivm_shader_type type)
+{
+ struct gallivm_ir *ir =
+ (struct gallivm_ir *)calloc(1, sizeof(struct gallivm_ir));
+ ++GLOBAL_ID;
+ ir->id = GLOBAL_ID;
+ ir->type = type;
+
+ return ir;
+}
+
+void gallivm_ir_set_layout(struct gallivm_ir *ir,
+ enum gallivm_vector_layout layout)
+{
+ ir->layout = layout;
+}
+
+void gallivm_ir_set_components(struct gallivm_ir *ir, int num)
+{
+ ir->num_components = num;
+}
+
+void gallivm_ir_fill_from_tgsi(struct gallivm_ir *ir,
+ const struct tgsi_token *tokens)
+{
+ std::cout << "Creating llvm from: " <<std::endl;
+ tgsi_dump(tokens, 0);
+
+ llvm::Module *mod = tgsi_to_llvmir(ir, tokens);
+ ir->module = mod;
+ gallivm_ir_dump(ir, 0);
+}
+
+void gallivm_ir_delete(struct gallivm_ir *ir)
+{
+ delete ir->module;
+ free(ir);
+}
+
+struct gallivm_prog * gallivm_ir_compile(struct gallivm_ir *ir)
+{
+ struct gallivm_prog *prog =
+ (struct gallivm_prog *)calloc(1, sizeof(struct gallivm_prog));
+
+ std::cout << "Before optimizations:"<<std::endl;
+ ir->module->dump();
+ std::cout<<"-------------------------------"<<std::endl;
+
+ PassManager veri;
+ veri.add(createVerifierPass());
+ veri.run(*ir->module);
+ llvm::Module *mod = llvm::CloneModule(ir->module);
+ prog->num_consts = ir->num_consts;
+ memcpy(prog->interpolators, ir->interpolators, sizeof(prog->interpolators));
+ prog->num_interp = ir->num_interp;
+
+ /* Run optimization passes over it */
+ PassManager passes;
+ passes.add(new TargetData(mod));
+ AddStandardCompilePasses(passes);
+ passes.run(*mod);
+ prog->module = mod;
+
+ std::cout << "After optimizations:"<<std::endl;
+ mod->dump();
+
+ return prog;
+}
+
+#endif /* MESA_LLVM */