[llvm][NFC] Remove definition from build system of LLVM_HAVE_TF_AOT

We can just use the definition from config.h. This means we need to move
a few lines around in CMakeLists.txt - the TF_AOT detection needs to be
before the spot we process the config.h.cmake files.

Differential Revision: https://reviews.llvm.org/D84349

Author: mtrofin

llvm/CMakeLists.txt

@@ -845,6 +845,29 @@ if (tensorflow_c_api)
   include_directories(${TENSORFLOW_C_LIB_PATH}/include)
 endif()
 
+# They are not referenced. See set_output_directory().
+set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/bin )
+set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
+set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
+
+# For up-to-date instructions for installing the Tensorflow dependency, refer to
+# the bot setup script: https://github.com/google/ml-compiler-opt/blob/master/buildbot/buildbot_init.sh
+# Specifically, assuming python3 is installed:
+# python3 -m pip install --upgrade pip && python3 -m pip install --user tf_nightly==2.3.0.dev20200528
+# Then set TENSORFLOW_AOT_PATH to the package install - usually it's ~/.local/lib/python3.7/site-packages/tensorflow
+#
+set(TENSORFLOW_AOT_PATH "" CACHE PATH "Path to TensorFlow pip install dir")
+
+if (NOT TENSORFLOW_AOT_PATH STREQUAL "")
+  set(LLVM_HAVE_TF_AOT "ON" CACHE BOOL "Tensorflow AOT available")
+  set(TENSORFLOW_AOT_COMPILER
+    "${TENSORFLOW_AOT_PATH}/../../../../bin/saved_model_cli"
+    CACHE PATH "Path to the Tensorflow AOT compiler")
+  include_directories(${TENSORFLOW_AOT_PATH}/include)
+  add_subdirectory(${TENSORFLOW_AOT_PATH}/xla_aot_runtime_src
+    ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/tf_runtime)
+endif()
+
 # Configure the three LLVM configuration header files.
 configure_file(
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/config.h.cmake
@@ -875,12 +898,6 @@ add_custom_target(srpm
   COMMAND rpmbuild -bs --define '_topdir ${LLVM_SRPM_DIR}' ${LLVM_SRPM_BINARY_SPECFILE})
 set_target_properties(srpm PROPERTIES FOLDER "Misc")
 
-
-# They are not referenced. See set_output_directory().
-set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/bin )
-set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
-set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
-
 if(APPLE AND DARWIN_LTO_LIBRARY)
   set(CMAKE_EXE_LINKER_FLAGS
     "${CMAKE_EXE_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
@@ -975,28 +992,6 @@ if( MINGW AND NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
   llvm_replace_compiler_option(CMAKE_CXX_FLAGS_RELEASE "-O3" "-O2")
 endif()
 
-# For up-to-date instructions for installing the Tensorflow dependency, refer to
-# the bot setup script: https://github.com/google/ml-compiler-opt/blob/master/buildbot/buildbot_init.sh
-# Specifically, assuming python3 is installed:
-# python3 -m pip install --upgrade pip && python3 -m pip install --user tf_nightly==2.3.0.dev20200528
-# Then set TENSORFLOW_AOT_PATH to the package install - usually it's ~/.local/lib/python3.7/site-packages/tensorflow
-#
-set(TENSORFLOW_AOT_PATH "" CACHE PATH "Path to TensorFlow pip install dir")
-
-if (NOT TENSORFLOW_AOT_PATH STREQUAL "")
-  set(LLVM_HAVE_TF_AOT "ON" CACHE BOOL "Tensorflow AOT available")
-  set(TENSORFLOW_AOT_COMPILER
-    "${TENSORFLOW_AOT_PATH}/../../../../bin/saved_model_cli"
-    CACHE PATH "Path to the Tensorflow AOT compiler")
-  # Unlike the LLVM_HAVE_TF_API case, we don't need to expose this through
-  # llvm-config.h, because it's an internal implementation detail. A user of the llvm library that wants to also
-  # use the TF AOT compiler may do so through their custom build step.
-  add_definitions("-DLLVM_HAVE_TF_AOT")
-  include_directories(${TENSORFLOW_AOT_PATH}/include)
-  add_subdirectory(${TENSORFLOW_AOT_PATH}/xla_aot_runtime_src
-    ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/tf_runtime)
-endif()
-
 # Put this before tblgen. Else we have a circular dependence.
 add_subdirectory(lib/Demangle)
 add_subdirectory(lib/Support)

llvm/include/llvm/Analysis/InlineAdvisor.h

@@ -14,6 +14,7 @@
 #include <vector>
 
 #include "llvm/Analysis/InlineCost.h"
+#include "llvm/Config/config.h"
 #include "llvm/IR/PassManager.h"
 
 namespace llvm {