[Cherry-Pick]Move pass optimizations into CINN. (#42047) (#42070)

* Move pass optimizations into CINN.

cmake/external/cinn.cmake

@@ -26,7 +26,7 @@ add_definitions(-w)
 ######################################
 include(ExternalProject)
 set(CINN_PREFIX_DIR ${THIRD_PARTY_PATH}/CINN)
-set(CINN_GIT_TAG 08d7680dd91dfaa65787969050eb8f1143654f10)
+set(CINN_GIT_TAG release/v0.2)
 set(CINN_OPTIONAL_ARGS -DPY_VERSION=${PY_VERSION}
                        -DWITH_CUDA=${WITH_GPU}
                        -DWITH_CUDNN=${WITH_GPU}

paddle/fluid/framework/paddle2cinn/cinn_compiler.cc

@@ -25,14 +25,10 @@
 #include "cinn/auto_schedule/tuning.h"
 #include "cinn/common/target.h"
 #include "cinn/common/type.h"
-#include "cinn/frontend/decomposer/use_decomposer.h"
-#include "cinn/frontend/pass/use_program_pass.h"
-#include "cinn/frontend/program_pass.h"
+#include "cinn/frontend/optimize.h"
 #include "cinn/frontend/syntax.h"
 #include "cinn/hlir/framework/graph.h"
 #include "cinn/hlir/framework/graph_compiler.h"
-#include "cinn/hlir/framework/pass.h"
-#include "cinn/hlir/pass/use_pass.h"
 #include "gflags/gflags.h"
 #include "paddle/fluid/framework/framework.pb.h"
 #include "paddle/fluid/framework/ir/graph.h"
@@ -58,13 +54,11 @@ namespace paddle2cinn {
 using ir::Graph;
 using ir::Node;
 using inference::analysis::Dot;
-using ::cinn::common::Target;
-using ::cinn::common::Float;
-using ::cinn::hlir::framework::GraphCompiler;
 using ::cinn::auto_schedule::AutoTuner;
+using ::cinn::common::Target;
+using ::cinn::frontend::Optimize;
 using ::cinn::hlir::framework::BuildScope;
-using ::cinn::frontend::ProgramPass;
-using ::cinn::hlir::framework::ApplyPass;
+using ::cinn::hlir::framework::GraphCompiler;
 
 CinnCompiler* CinnCompiler::GetInstance() {
   static CinnCompiler instance;
@@ -75,7 +69,7 @@ const CinnCompiledObject& CinnCompiler::Compile(
     const Graph& graph,
     const std::map<std::string, const LoDTensor*>& input_tensors,
     const Target& target, void* stream) {
-  VLOG(1) << "-- The graph to be compiled is:\n" << VizGraph(graph);
+  VLOG(4) << "-- The graph to be compiled is:\n" << VizGraph(graph);
   CinnCacheKeyByAddress cur_key_by_address(graph, input_tensors,
                                            target.arch_str());
   CinnCacheKeyByStructure cur_key_by_struct;
@@ -258,22 +252,15 @@ std::unique_ptr<CinnCompiledObject> CinnCompiler::CompileGraph(
   CinnGraphSymbolization symbol{compiled_num, graph, target, input_tensors};
   auto frontend_program = symbol();
   auto fetch_ids = symbol.GetFetchIds();
-  ProgramPass::Apply(&frontend_program, fetch_ids, target, {"Decomposer"});
-  ::cinn::frontend::ApplyPass(&frontend_program, fetch_ids, "RemoveIdentity");
-  ::cinn::frontend::ApplyPass(&frontend_program, fetch_ids, "TransposeFolding");
-  ProgramPass::Apply(&frontend_program, fetch_ids, target, {"GemmRewriter"});
+  VLOG(4) << "All fetch var ids in CINN: "
+          << string::join_strings(fetch_ids, ',');
 
-  auto cinn_graph = std::make_shared<::cinn::hlir::framework::Graph>(
-      frontend_program, target);
-  VLOG(1) << "-- The " << compiled_num << "-th compilation ("
+  auto cinn_graph = Optimize(&frontend_program, fetch_ids, target);
+  VLOG(4) << "-- The " << compiled_num << "-th compilation ("
           << target.arch_str() << "), and its related graph:\n"
           << cinn_graph->Visualize();
-  ApplyPass(cinn_graph.get(), "OpFusion");
-  auto scope = BuildScope(target, cinn_graph);
-
-  VLOG(4) << "All fetch var ids in CINN: "
-          << string::join_strings(fetch_ids, ',');
 
+  auto scope = BuildScope(target, cinn_graph);
   auto graph_compiler =
       std::make_unique<GraphCompiler>(target, scope, cinn_graph);
   GraphCompiler::CompileOptions options;