[CIR][Docs] Fix cmake output dir and remove empty docs for CIRDialect

Author: bcardosolopes

clang/include/clang/CIR/Dialect/CMakeLists.txt

@@ -13,7 +13,7 @@ add_custom_target(clang-cir-doc)
 function(add_clang_mlir_doc doc_filename output_file output_directory command)
   set(LLVM_TARGET_DEFINITIONS ${doc_filename}.td)
   tablegen(MLIR ${output_file}.md ${command} ${ARGN} "-I${MLIR_MAIN_SRC_DIR}" "-I${MLIR_INCLUDE_DIR}")
-  set(GEN_DOC_FILE ${MLIR_BINARY_DIR}/docs/${output_directory}${output_file}.md)
+  set(GEN_DOC_FILE ${CLANG_BINARY_DIR}/docs/${output_directory}${output_file}.md)
   add_custom_command(
           OUTPUT ${GEN_DOC_FILE}
           COMMAND ${CMAKE_COMMAND} -E copy

clang/include/clang/CIR/Dialect/IR/CMakeLists.txt

@@ -15,7 +15,6 @@ add_public_tablegen_target(MLIRCIROpsIncGen)
 add_dependencies(mlir-headers MLIRCIROpsIncGen)
 
 # Equivalent to add_mlir_doc
-add_clang_mlir_doc(CIRDialect CIRDialect Dialects/ -gen-dialect-doc)
 add_clang_mlir_doc(CIROps CIROps Dialects/ -gen-op-doc)
 add_clang_mlir_doc(CIRAttrs CIRAttrs Dialects/ -gen-attrdef-doc)
 add_clang_mlir_doc(CIRTypes CIRTypes Dialects/ -gen-typedef-doc)