junrushao commented on code in PR #13973: URL: https://github.com/apache/tvm/pull/13973#discussion_r1105317072
########## src/tir/transforms/inject_ptx_ldg32.cc: ########## @@ -0,0 +1,174 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +#include <tvm/arith/analyzer.h> +#include <tvm/arith/iter_affine_map.h> +#include <tvm/runtime/registry.h> +#include <tvm/tir/analysis.h> +#include <tvm/tir/op.h> +#include <tvm/tir/stmt.h> +#include <tvm/tir/stmt_functor.h> +#include <tvm/tir/transform.h> + +#include "../../arith/const_fold.h" +#include "../../arith/pattern_match.h" + +namespace tvm { +namespace tir { + + + +class PTXRewriter : public StmtMutator{ + +public: + explicit PTXRewriter() {} + + Stmt VisitStmt_(const AllocateNode* allocate) final{ + + if (!has_buffer_1){ + has_buffer_1 = true; + // addr[0] -> global_addr / addr[1] -> local_addr + addr_buffer = decl_buffer({IntImm(DataType::Int(32), 2)}, DataType::Int(32), "addr", "local"); + predicate_buffer = decl_buffer({IntImm(DataType::Int(32), 1)}, DataType::Bool(1), "predicate", "local"); + } + + Stmt result = StmtMutator::VisitStmt_(allocate); + if (!has_buffer_2){ + has_buffer_2 = true; + result = Allocate(addr_buffer->data, addr_buffer->dtype, addr_buffer->shape, Bool(true), result); + result = Allocate(predicate_buffer->data, predicate_buffer->dtype, predicate_buffer->shape, Bool(true), result); + } + + + + + + return result; + } + + + Stmt VisitStmt_(const BufferStoreNode* store) final{ + + Stmt result = StmtMutator::VisitStmt_(store); + + + Buffer load_buffer = store->buffer; + PrimExpr load_value = store->value; + + // const BufferLoadNode* gload = load_value.as<BufferLoadNode>(); // take the place of instance of + + const CallNode* call = load_value.as<CallNode>(); + + if (call != nullptr){ + + const OpNode* op = call->op.as<OpNode>(); + if (op != nullptr && op->name == "tir.if_then_else"){ + const PrimExpr& predicate = call->args[0]; + const PrimExpr& lhs = call->args[1]; + const PrimExpr& rhs = call->args[2]; + + PrimExpr global_addr, local_addr; + const BufferLoadNode* load = lhs.as<BufferLoadNode>(); + PrimExpr imm_value = rhs; + + + if (load == nullptr){ + load = rhs.as<BufferLoadNode>(); + imm_value = lhs; + if (load == nullptr){ + return result; + } + } + + global_addr = load->indices[0]; + + const RampNode* ramp = global_addr.as<RampNode>(); + if (ramp != nullptr){ + return result; + } + + local_addr = store->indices[0]; + + + BufferStore addr_store(addr_buffer, global_addr, {IntImm(DataType::Int(32), 0)}); + BufferStore local_addr_store(addr_buffer,local_addr,{IntImm(DataType::Int(32), 1)}); + BufferStore predicate_store(predicate_buffer, predicate, {IntImm(DataType::Int(32), 0)}); + + + PrimExpr new_lhs, new_rhs, new_predicate, new_indice; + + new_lhs = BufferLoad(load->buffer, {BufferLoad(addr_buffer, {IntImm(DataType::Int(32), 0)})}); + new_rhs = IntImm(DataType::Int(32), 0); + new_predicate = BufferLoad(predicate_buffer, {IntImm(DataType::Int(32), 0)}); + new_indice = BufferLoad(addr_buffer, {IntImm(DataType::Int(32), 1)}); + + + BufferStore value_store(store->buffer, imm_value, {new_indice}); + + + Evaluate ptx_load(Call(store->buffer->dtype, tvm::tir::builtin::ptx_pred_ldg32(),{store->buffer->data, new_predicate , new_lhs,new_indice})); + + Array<Stmt> tmp_seq = {addr_store, local_addr_store, predicate_store, value_store , ptx_load}; + + SeqStmt seq_stmt = SeqStmt(tmp_seq); + + return seq_stmt; + + } + } + + + return result; + + } + + + bool has_buffer_1 = false, has_buffer_2 = false ; + Buffer addr_buffer , predicate_buffer ; + + +}; + + +namespace transform{ + + +Pass InjectPTXLDG32(bool enable_inject_ptx_intrin) { + auto pass_func = [enable_inject_ptx_intrin](PrimFunc f, IRModule m, PassContext ctx) { + if (enable_inject_ptx_intrin) { + auto* n = f.CopyOnWrite(); + n->body = PTXRewriter()(n->body); + // inject ptx + } + return f; + }; + return CreatePrimFuncPass(pass_func, 0, "tir.InjectPTXLDG32", {}); +} + +// The pass can now be invoked via the pass infrastructure, but we also add a Python binding for it +TVM_REGISTER_GLOBAL("tir.transform.InjectPTXLDG32").set_body_typed(InjectPTXLDG32); + Review Comment: nit: you may use clang-format to somehow organize the file slightly better -- This is an automated message from the Apache Git Service. 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