diff options
Diffstat (limited to 'src/mesa/pipe/llvm/gallivm.cpp')
| -rw-r--r-- | src/mesa/pipe/llvm/gallivm.cpp | 887 |
1 files changed, 887 insertions, 0 deletions
diff --git a/src/mesa/pipe/llvm/gallivm.cpp b/src/mesa/pipe/llvm/gallivm.cpp new file mode 100644 index 0000000000..b09a2ff8ee --- /dev/null +++ b/src/mesa/pipe/llvm/gallivm.cpp @@ -0,0 +1,887 @@ +/************************************************************************** + * + * 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 "instructions.h" +#include "storage.h" + +#include "pipe/p_context.h" +#include "pipe/tgsi/exec/tgsi_exec.h" +#include "pipe/tgsi/exec/tgsi_token.h" +#include "pipe/tgsi/exec/tgsi_build.h" +#include "pipe/tgsi/exec/tgsi_util.h" +#include "pipe/tgsi/exec/tgsi_parse.h" +#include "pipe/tgsi/exec/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 <sstream> +#include <fstream> +#include <iostream> + +struct gallivm_prog { + llvm::Module *module; + void *function; + int num_consts; + int id; +}; + +struct gallivm_cpu_engine { + llvm::ExecutionEngine *engine; +}; + +using namespace llvm; +#include "llvm_base_shader.cpp" + +static int GLOBAL_ID = 0; + +static inline void AddStandardCompilePasses(PassManager &PM) { + 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 +} + +static void +translate_declaration(llvm::Module *module, + Storage *storage, + struct tgsi_full_declaration *decl, + struct tgsi_full_declaration *fd) +{ +} + + +static void +translate_immediate(Storage *storage, + struct tgsi_full_immediate *imm) +{ + float vec[4]; + int i; + for (i = 0; i < imm->Immediate.Size - 1; ++i) { + switch( imm->Immediate.DataType ) { + case TGSI_IMM_FLOAT32: + vec[i] = imm->u.ImmediateFloat32[i].Float; + break; + default: + assert( 0 ); + } + } + storage->addImmediate(vec); +} + +static inline llvm::Value * +swizzleVector(llvm::Value *val, struct tgsi_full_src_register *src, + Storage *storage) +{ + int swizzle = 0; + int start = 1000; + const int NO_SWIZZLE = TGSI_SWIZZLE_X * 1000 + TGSI_SWIZZLE_Y * 100 + + TGSI_SWIZZLE_Z * 10 + TGSI_SWIZZLE_W; + for (int k = 0; k < 4; ++k) { + swizzle += tgsi_util_get_full_src_register_extswizzle(src, k) * start; + start /= 10; + } + if (swizzle != NO_SWIZZLE) { + /*fprintf(stderr, "XXXXXXXX swizzle = %d\n", swizzle);*/ + val = storage->shuffleVector(val, swizzle); + } + return val; +} + +static void +translate_instruction(llvm::Module *module, + Storage *storage, + Instructions *instr, + struct tgsi_full_instruction *inst, + struct tgsi_full_instruction *fi, + unsigned instno) +{ + llvm::Value *inputs[4]; + inputs[0] = 0; + inputs[1] = 0; + inputs[2] = 0; + inputs[3] = 0; + + for (int i = 0; i < inst->Instruction.NumSrcRegs; ++i) { + struct tgsi_full_src_register *src = &inst->FullSrcRegisters[i]; + llvm::Value *val = 0; + llvm::Value *indIdx = 0; + + if (src->SrcRegister.Indirect) { + indIdx = storage->addrElement(src->SrcRegisterInd.Index); + indIdx = storage->extractIndex(indIdx); + } + if (src->SrcRegister.File == TGSI_FILE_CONSTANT) { + val = storage->constElement(src->SrcRegister.Index, indIdx); + } else if (src->SrcRegister.File == TGSI_FILE_INPUT) { + val = storage->inputElement(src->SrcRegister.Index, indIdx); + } else if (src->SrcRegister.File == TGSI_FILE_TEMPORARY) { + val = storage->tempElement(src->SrcRegister.Index); + } else if (src->SrcRegister.File == TGSI_FILE_OUTPUT) { + val = storage->outputElement(src->SrcRegister.Index, indIdx); + } else if (src->SrcRegister.File == TGSI_FILE_IMMEDIATE) { + val = storage->immediateElement(src->SrcRegister.Index); + } else { + fprintf(stderr, "ERROR: not supported llvm source %d\n", src->SrcRegister.File); + return; + } + + inputs[i] = swizzleVector(val, src, storage); + } + + /*if (inputs[0]) + instr->printVector(inputs[0]); + if (inputs[1]) + instr->printVector(inputs[1]);*/ + llvm::Value *out = 0; + switch (inst->Instruction.Opcode) { + case TGSI_OPCODE_ARL: { + out = instr->arl(inputs[0]); + } + break; + case TGSI_OPCODE_MOV: { + out = inputs[0]; + } + break; + case TGSI_OPCODE_LIT: { + out = instr->lit(inputs[0]); + } + break; + case TGSI_OPCODE_RCP: { + out = instr->rcp(inputs[0]); + } + break; + case TGSI_OPCODE_RSQ: { + out = instr->rsq(inputs[0]); + } + break; + case TGSI_OPCODE_EXP: + break; + case TGSI_OPCODE_LOG: + break; + case TGSI_OPCODE_MUL: { + out = instr->mul(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_ADD: { + out = instr->add(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_DP3: { + out = instr->dp3(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_DP4: { + out = instr->dp4(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_DST: { + out = instr->dst(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_MIN: { + out = instr->min(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_MAX: { + out = instr->max(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_SLT: { + out = instr->slt(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_SGE: { + out = instr->sge(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_MAD: { + out = instr->madd(inputs[0], inputs[1], inputs[2]); + } + break; + case TGSI_OPCODE_SUB: { + out = instr->sub(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_LERP: { + out = instr->lerp(inputs[0], inputs[1], inputs[2]); + } + break; + case TGSI_OPCODE_CND: + break; + case TGSI_OPCODE_CND0: + break; + case TGSI_OPCODE_DOT2ADD: + break; + case TGSI_OPCODE_INDEX: + break; + case TGSI_OPCODE_NEGATE: + break; + case TGSI_OPCODE_FRAC: { + out = instr->frc(inputs[0]); + } + break; + case TGSI_OPCODE_CLAMP: + break; + case TGSI_OPCODE_FLOOR: { + out = instr->floor(inputs[0]); + } + break; + case TGSI_OPCODE_ROUND: + break; + case TGSI_OPCODE_EXPBASE2: { + out = instr->ex2(inputs[0]); + } + break; + case TGSI_OPCODE_LOGBASE2: { + out = instr->lg2(inputs[0]); + } + break; + case TGSI_OPCODE_POWER: { + out = instr->pow(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_CROSSPRODUCT: { + out = instr->cross(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_MULTIPLYMATRIX: + break; + case TGSI_OPCODE_ABS: { + out = instr->abs(inputs[0]); + } + break; + case TGSI_OPCODE_RCC: + break; + case TGSI_OPCODE_DPH: { + out = instr->dph(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_COS: + break; + case TGSI_OPCODE_DDX: + break; + case TGSI_OPCODE_DDY: + break; + case TGSI_OPCODE_KILP: + break; + case TGSI_OPCODE_PK2H: + break; + case TGSI_OPCODE_PK2US: + break; + case TGSI_OPCODE_PK4B: + break; + case TGSI_OPCODE_PK4UB: + break; + case TGSI_OPCODE_RFL: + break; + case TGSI_OPCODE_SEQ: + break; + case TGSI_OPCODE_SFL: + break; + case TGSI_OPCODE_SGT: { + out = instr->sgt(inputs[0], inputs[1]); + } + break; + case TGSI_OPCODE_SIN: + break; + case TGSI_OPCODE_SLE: + break; + case TGSI_OPCODE_SNE: + break; + case TGSI_OPCODE_STR: + break; + case TGSI_OPCODE_TEX: + break; + case TGSI_OPCODE_TXD: + break; + case TGSI_OPCODE_TXP: + break; + case TGSI_OPCODE_UP2H: + break; + case TGSI_OPCODE_UP2US: + break; + case TGSI_OPCODE_UP4B: + break; + case TGSI_OPCODE_UP4UB: + break; + case TGSI_OPCODE_X2D: + break; + case TGSI_OPCODE_ARA: + break; + case TGSI_OPCODE_ARR: + break; + case TGSI_OPCODE_BRA: + break; + case TGSI_OPCODE_CAL: { + instr->cal(inst->InstructionExtLabel.Label, + storage->outputPtr(), + storage->inputPtr(), + storage->constPtr(), + storage->tempPtr()); + return; + } + break; + case TGSI_OPCODE_RET: { + instr->end(); + return; + } + break; + case TGSI_OPCODE_SSG: + break; + case TGSI_OPCODE_CMP: + break; + case TGSI_OPCODE_SCS: + break; + case TGSI_OPCODE_TXB: + break; + case TGSI_OPCODE_NRM: + break; + case TGSI_OPCODE_DIV: + break; + case TGSI_OPCODE_DP2: + break; + case TGSI_OPCODE_TXL: + break; + case TGSI_OPCODE_BRK: { + instr->brk(); + return; + } + break; + case TGSI_OPCODE_IF: { + instr->ifop(inputs[0]); + storage->setCurrentBlock(instr->currentBlock()); + return; //just update the state + } + break; + case TGSI_OPCODE_LOOP: + break; + case TGSI_OPCODE_REP: + break; + case TGSI_OPCODE_ELSE: { + instr->elseop(); + storage->setCurrentBlock(instr->currentBlock()); + return; //only state update + } + break; + case TGSI_OPCODE_ENDIF: { + instr->endif(); + storage->setCurrentBlock(instr->currentBlock()); + return; //just update the state + } + break; + case TGSI_OPCODE_ENDLOOP: + break; + case TGSI_OPCODE_ENDREP: + break; + case TGSI_OPCODE_PUSHA: + break; + case TGSI_OPCODE_POPA: + break; + case TGSI_OPCODE_CEIL: + break; + case TGSI_OPCODE_I2F: + break; + case TGSI_OPCODE_NOT: + break; + case TGSI_OPCODE_TRUNC: { + out = instr->trunc(inputs[0]); + } + break; + case TGSI_OPCODE_SHL: + break; + case TGSI_OPCODE_SHR: + break; + case TGSI_OPCODE_AND: + break; + case TGSI_OPCODE_OR: + break; + case TGSI_OPCODE_MOD: + break; + case TGSI_OPCODE_XOR: + break; + case TGSI_OPCODE_SAD: + break; + case TGSI_OPCODE_TXF: + break; + case TGSI_OPCODE_TXQ: + break; + case TGSI_OPCODE_CONT: + break; + case TGSI_OPCODE_EMIT: + break; + case TGSI_OPCODE_ENDPRIM: + break; + case TGSI_OPCODE_BGNLOOP2: { + instr->beginLoop(); + storage->setCurrentBlock(instr->currentBlock()); + return; + } + break; + case TGSI_OPCODE_BGNSUB: { + instr->bgnSub(instno); + storage->setCurrentBlock(instr->currentBlock()); + storage->pushTemps(); + return; + } + break; + case TGSI_OPCODE_ENDLOOP2: { + instr->endLoop(); + storage->setCurrentBlock(instr->currentBlock()); + return; + } + break; + case TGSI_OPCODE_ENDSUB: { + instr->endSub(); + storage->setCurrentBlock(instr->currentBlock()); + storage->popArguments(); + storage->popTemps(); + return; + } + break; + case TGSI_OPCODE_NOISE1: + break; + case TGSI_OPCODE_NOISE2: + break; + case TGSI_OPCODE_NOISE3: + break; + case TGSI_OPCODE_NOISE4: + break; + case TGSI_OPCODE_NOP: + break; + case TGSI_OPCODE_TEXBEM: + break; + case TGSI_OPCODE_TEXBEML: + break; + case TGSI_OPCODE_TEXREG2AR: + break; + case TGSI_OPCODE_TEXM3X2PAD: + break; + case TGSI_OPCODE_TEXM3X2TEX: + break; + case TGSI_OPCODE_TEXM3X3PAD: + break; + case TGSI_OPCODE_TEXM3X3TEX: + break; + case TGSI_OPCODE_TEXM3X3SPEC: + break; + case TGSI_OPCODE_TEXM3X3VSPEC: + break; + case TGSI_OPCODE_TEXREG2GB: + break; + case TGSI_OPCODE_TEXREG2RGB: + break; + case TGSI_OPCODE_TEXDP3TEX: + break; + case TGSI_OPCODE_TEXDP3: + break; + case TGSI_OPCODE_TEXM3X3: + break; + case TGSI_OPCODE_TEXM3X2DEPTH: + break; + case TGSI_OPCODE_TEXDEPTH: + break; + case TGSI_OPCODE_BEM: + break; + case TGSI_OPCODE_M4X3: + break; + case TGSI_OPCODE_M3X4: + break; + case TGSI_OPCODE_M3X3: + break; + case TGSI_OPCODE_M3X2: + break; + case TGSI_OPCODE_NRM4: + break; + case TGSI_OPCODE_CALLNZ: + break; + case TGSI_OPCODE_IFC: + break; + case TGSI_OPCODE_BREAKC: + break; + case TGSI_OPCODE_KIL: + break; + case TGSI_OPCODE_END: + instr->end(); + return; + break; + default: + fprintf(stderr, "ERROR: Unknown opcode %d\n", + inst->Instruction.Opcode); + assert(0); + break; + } + + if (!out) { + fprintf(stderr, "ERROR: unsupported opcode %d\n", + inst->Instruction.Opcode); + assert(!"Unsupported opcode"); + } + + /* # not sure if we need this */ + switch( inst->Instruction.Saturate ) { + case TGSI_SAT_NONE: + break; + case TGSI_SAT_ZERO_ONE: + /*TXT( "_SAT" );*/ + break; + case TGSI_SAT_MINUS_PLUS_ONE: + /*TXT( "_SAT[-1,1]" );*/ + break; + default: + assert( 0 ); + } + + /* store results */ + for (int i = 0; i < inst->Instruction.NumDstRegs; ++i) { + struct tgsi_full_dst_register *dst = &inst->FullDstRegisters[i]; + + if (dst->DstRegister.File == TGSI_FILE_OUTPUT) { + storage->setOutputElement(dst->DstRegister.Index, out, dst->DstRegister.WriteMask); + } else if (dst->DstRegister.File == TGSI_FILE_TEMPORARY) { + storage->setTempElement(dst->DstRegister.Index, out, dst->DstRegister.WriteMask); + } else if (dst->DstRegister.File == TGSI_FILE_ADDRESS) { + storage->setAddrElement(dst->DstRegister.Index, out, dst->DstRegister.WriteMask); + } else { + fprintf(stderr, "ERROR: unsupported LLVM destination!"); + assert(!"wrong destination"); + } + } +} + +static llvm::Module * +tgsi_to_llvm(struct gallivm_prog *prog, const struct tgsi_token *tokens) +{ + llvm::Module *mod = createBaseShader(); + struct tgsi_parse_context parse; + struct tgsi_full_instruction fi; + struct tgsi_full_declaration fd; + unsigned instno = 0; + Function* shader = mod->getFunction("execute_shader"); + std::ostringstream stream; + stream << "execute_shader"; + stream << prog->id; + std::string func_name = stream.str(); + shader->setName(func_name.c_str()); + + Function::arg_iterator args = shader->arg_begin(); + Value *ptr_OUT = args++; + ptr_OUT->setName("OUT"); + Value *ptr_IN = args++; + ptr_IN->setName("IN"); + Value *ptr_CONST = args++; + ptr_CONST->setName("CONST"); + Value *ptr_TEMPS = args++; + ptr_TEMPS->setName("TEMPS"); + + BasicBlock *label_entry = new BasicBlock("entry", shader, 0); + + tgsi_parse_init(&parse, tokens); + + fi = tgsi_default_full_instruction(); + fd = tgsi_default_full_declaration(); + Storage storage(label_entry, ptr_OUT, ptr_IN, ptr_CONST, ptr_TEMPS); + Instructions instr(mod, shader, label_entry, &storage); + while(!tgsi_parse_end_of_tokens(&parse)) { + tgsi_parse_token(&parse); + + switch (parse.FullToken.Token.Type) { + case TGSI_TOKEN_TYPE_DECLARATION: + translate_declaration(mod, &storage, + &parse.FullToken.FullDeclaration, + &fd); + break; + + case TGSI_TOKEN_TYPE_IMMEDIATE: + translate_immediate(&storage, + &parse.FullToken.FullImmediate); + break; + + case TGSI_TOKEN_TYPE_INSTRUCTION: + translate_instruction(mod, &storage, &instr, + &parse.FullToken.FullInstruction, + &fi, instno); + ++instno; + break; + + default: + assert(0); + } + } + + tgsi_parse_free(&parse); + + prog->num_consts = storage.numConsts(); + return mod; +} + +/*! + Translates the TGSI tokens into LLVM format. Translated representation + is stored in the gallivm_prog and returned. + After calling this function the gallivm_prog can either be used with a custom + code generator to generate machine code for the GPU which the code generator + addresses or it can be jit compiled with gallivm_cpu_jit_compile and executed + with gallivm_prog_exec to run the module on the CPU. + */ +struct gallivm_prog * +gallivm_from_tgsi(const struct tgsi_token *tokens) +{ + std::cout << "Creating llvm from: " <<std::endl; + ++GLOBAL_ID; + struct gallivm_prog *gallivm = + (struct gallivm_prog *)calloc(1, sizeof(struct gallivm_prog)); + gallivm->id = GLOBAL_ID; + tgsi_dump(tokens, 0); + + llvm::Module *mod = tgsi_to_llvm(gallivm, tokens); + gallivm->module = mod; + gallivm_prog_dump(gallivm, 0); + + /* Run optimization passes over it */ + PassManager passes; + passes.add(new TargetData(mod)); + AddStandardCompilePasses(passes); + passes.run(*mod); + + gallivm->module = mod; + + gallivm_prog_dump(gallivm, 0); + + return gallivm; +} + +void gallivm_prog_delete(struct gallivm_prog *prog) +{ + llvm::Module *mod = static_cast<llvm::Module*>(prog->module); + delete mod; + prog->module = 0; + prog->function = 0; + free(prog); +} + +typedef void (*vertex_shader_runner)(float (*ainputs)[PIPE_MAX_SHADER_INPUTS][4], + float (*dests)[PIPE_MAX_SHADER_INPUTS][4], + float (*aconsts)[4], + int num_vertices, + int num_inputs, + int num_attribs, + int num_consts); + + +/*! + This function is used to execute the gallivm_prog in software. Before calling + this function the gallivm_prog has to be JIT compiled with the gallivm_cpu_jit_compile + function. + */ +int gallivm_prog_exec(struct gallivm_prog *prog, + float (*inputs)[PIPE_MAX_SHADER_INPUTS][4], + float (*dests)[PIPE_MAX_SHADER_INPUTS][4], + float (*consts)[4], + int num_vertices, + int num_inputs, + int num_attribs) +{ + vertex_shader_runner runner = reinterpret_cast<vertex_shader_runner>(prog->function); + assert(runner); + runner(inputs, dests, consts, num_vertices, num_inputs, + num_attribs, prog->num_consts); + + return 0; +} + +void gallivm_prog_dump(struct gallivm_prog *prog, const char *file_prefix) +{ + llvm::Module *mod; + if (!prog || !prog->module) + return; + + mod = static_cast<llvm::Module*>(prog->module); + + if (file_prefix) { + std::ostringstream stream; + stream << file_prefix; + stream << prog->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 << (*mod); + out.close(); + } else { + const llvm::Module::FunctionListType &funcs = mod->getFunctionList(); + llvm::Module::FunctionListType::const_iterator itr; + std::cout<<"; ---------- Start shader "<<prog->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("execute_shader") != std::string::npos || + name.find("function") != std::string::npos) + found = &func; + if (found) { + std::cout<<*found<<std::endl; + } + } + std::cout<<"; ---------- End shader "<<prog->id<<std::endl; + } +} + + +static struct gallivm_cpu_engine *CPU = 0; +/*! + This function creates a CPU based execution engine for the given gallivm_prog. + gallivm_cpu_engine should be used as a singleton throughout the library. Before + executing gallivm_prog_exec one needs to call gallivm_cpu_jit_compile. + The gallivm_prog instance which is being passed to the constructor is being + automatically JIT compiled so one shouldn't call gallivm_cpu_jit_compile + with it again. + */ +struct gallivm_cpu_engine * gallivm_cpu_engine_create(struct gallivm_prog *prog) +{ + struct gallivm_cpu_engine *cpu = (struct gallivm_cpu_engine *) + calloc(1, sizeof(struct gallivm_cpu_engine)); + llvm::Module *mod = static_cast<llvm::Module*>(prog->module); + llvm::ExistingModuleProvider *mp = new llvm::ExistingModuleProvider(mod); + llvm::ExecutionEngine *ee = llvm::ExecutionEngine::create(mp, false); + cpu->engine = ee; + + llvm::Function *func = mod->getFunction("run_vertex_shader"); + prog->function = ee->getPointerToFunctionOrStub(func); + CPU = cpu; + return cpu; +} + + +/*! + This function JIT compiles the given gallivm_prog with the given cpu based execution engine. + The reference to the generated machine code entry point will be stored + in the gallivm_prog program. After executing this function one can call gallivm_prog_exec + in order to execute the gallivm_prog on the CPU. + */ +void gallivm_cpu_jit_compile(struct gallivm_cpu_engine *cpu, struct gallivm_prog *prog) +{ + llvm::Module *mod = static_cast<llvm::Module*>(prog->module); + llvm::ExistingModuleProvider *mp = new llvm::ExistingModuleProvider(mod); + llvm::ExecutionEngine *ee = cpu->engine; + assert(ee); + ee->addModuleProvider(mp); + + llvm::Function *func = mod->getFunction("run_vertex_shader"); + prog->function = ee->getPointerToFunctionOrStub(func); +} + +void gallivm_cpu_engine_delete(struct gallivm_cpu_engine *cpu) +{ + free(cpu); +} + +struct gallivm_cpu_engine * gallivm_global_cpu_engine() +{ + return CPU; +} + +#endif /* MESA_LLVM */ + + + |