IRGraph C++ Printer. (#9042)

* First version of the IRGraph printer for C++ code.

* typo and clang violation

* Try again

* Moved implementation of the IRGraphCXXPrinter to the cpp file.

* Cleanup

* Apply pre-commit auto-fixes

* Expand test.

* Don't pretend that we will IR print Stmts.

* more clang-tidy;

* Support printing Call statements.

* Add string-based testing for IRGraphCXXPrinter.

* Move IRGraphCXXPrinter to test/fuzz

* Move IRGraphCXXPrinter to the fuzz folder and fixup compilation, and make the simplify fuzzer print out the Expr.

---------

Co-authored-by: halide-ci[bot] <266445882+halide-ci[bot]@users.noreply.github.com>

Author: mcourteaux

Makefile

@@ -1286,7 +1286,7 @@ PERFORMANCE_TESTS = $(shell ls $(ROOT_DIR)/test/performance/*.cpp)
 ERROR_TESTS = $(shell ls $(ROOT_DIR)/test/error/*.cpp)
 WARNING_TESTS = $(shell ls $(ROOT_DIR)/test/warning/*.cpp)
 RUNTIME_TESTS = $(shell ls $(ROOT_DIR)/test/runtime/*.cpp)
-FUZZ_TESTS = $(filter-out %halide_fuzz_main.cpp, $(shell ls $(ROOT_DIR)/test/fuzz/*.cpp))
+FUZZ_TESTS = $(filter-out %halide_fuzz_main.cpp %IRGraphCXXPrinter.cpp, $(shell ls $(ROOT_DIR)/test/fuzz/*.cpp))
 GENERATOR_EXTERNAL_TESTS := $(shell ls $(ROOT_DIR)/test/generator/*test.cpp)
 GENERATOR_EXTERNAL_TEST_GENERATOR := $(shell ls $(ROOT_DIR)/test/generator/*_generator.cpp)
 TUTORIALS = $(filter-out %_generate.cpp, $(shell ls $(ROOT_DIR)/tutorial/*.cpp))
@@ -1475,7 +1475,7 @@ $(BIN_DIR)/$(TARGET)/correctness_opencl_runtime: $(ROOT_DIR)/test/correctness/op
 $(BIN_DIR)/performance_%: $(ROOT_DIR)/test/performance/%.cpp $(TEST_DEPS)
 	$(CXX) $(TEST_CXX_FLAGS) $(OPTIMIZE) $< -I$(INCLUDE_DIR) -I$(ROOT_DIR)/src/runtime -I$(ROOT_DIR)/test/common $(TEST_LD_FLAGS) -o $@
 
-$(BIN_DIR)/fuzz_%: $(ROOT_DIR)/test/fuzz/%.cpp $(ROOT_DIR)/test/fuzz/halide_fuzz_main.cpp $(ROOT_DIR)/test/fuzz/fuzz_helpers.h $(ROOT_DIR)/test/fuzz/halide_fuzz_main.h $(TEST_DEPS)
+$(BIN_DIR)/fuzz_%: $(ROOT_DIR)/test/fuzz/%.cpp $(ROOT_DIR)/test/fuzz/halide_fuzz_main.cpp $(ROOT_DIR)/test/fuzz/fuzz_helpers.h $(ROOT_DIR)/test/fuzz/halide_fuzz_main.h $(ROOT_DIR)/test/fuzz/IRGraphCXXPrinter.cpp $(ROOT_DIR)/test/fuzz/IRGraphCXXPrinter.h $(TEST_DEPS)
 	$(CXX) $(TEST_CXX_FLAGS) -I$(ROOT_DIR)/src/runtime -I$(ROOT_DIR)/test/common $(OPTIMIZE_FOR_BUILD_TIME) $(filter %.cpp,$^) -I$(INCLUDE_DIR) $(TEST_LD_FLAGS) -o $@ -DHALIDE_FUZZER_BACKEND=0
 
 # Error tests that link against libHalide

test/fuzz/CMakeLists.txt

@@ -36,20 +36,24 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, std::size_t Size) {
 }
 ]] HAVE_LIBFUZZER_FLAGS)
 
-add_library(Halide_fuzz INTERFACE)
+add_library(Halide_fuzz OBJECT)
 add_library(Halide::fuzz ALIAS Halide_fuzz)
 
+target_sources(Halide_fuzz PRIVATE IRGraphCXXPrinter.cpp)
+target_link_libraries(Halide_fuzz PRIVATE Halide::Test)
+
 if (NOT HAVE_LIBFUZZER_FLAGS)
     if (LIB_FUZZING_ENGINE)
         message(FATAL_ERROR "Cannot set LIB_FUZZING_ENGINE when not building with -fsanitize=fuzzer or a compatible fuzzing engine.")
     endif ()
-    target_sources(Halide_fuzz INTERFACE halide_fuzz_main.cpp halide_fuzz_main.h)
-    target_compile_definitions(Halide_fuzz INTERFACE HALIDE_FUZZER_BACKEND=HALIDE_FUZZER_BACKEND_STDLIB)
+    target_sources(Halide_fuzz PRIVATE halide_fuzz_main.cpp halide_fuzz_main.h)
+    target_compile_definitions(Halide_fuzz PUBLIC HALIDE_FUZZER_BACKEND=HALIDE_FUZZER_BACKEND_STDLIB)
 else ()
-    target_link_libraries(Halide_fuzz INTERFACE ${LIB_FUZZING_ENGINE})
-    target_compile_definitions(Halide_fuzz INTERFACE HALIDE_FUZZER_BACKEND=HALIDE_FUZZER_BACKEND_LIBFUZZER)
+    target_link_libraries(Halide_fuzz PUBLIC ${LIB_FUZZING_ENGINE})
+    target_compile_definitions(Halide_fuzz PUBLIC HALIDE_FUZZER_BACKEND=HALIDE_FUZZER_BACKEND_LIBFUZZER)
 endif ()
 
+
 foreach (fuzzer IN LISTS TEST_NAMES)
     target_link_libraries("${fuzzer}" PRIVATE Halide::fuzz)
 endforeach ()