Update LLVM for rebase to r212749.

Includes a cherry-pick of:
r212948 - fixes a small issue with atomic calls

Change-Id: Ib97bd980b59f18142a69506400911a6009d9df18

1 files changed, 3 insertions, 28 deletions

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 1325e79..b862ceb 100755
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -252,15 +252,9 @@ function(llvm_find_program name)
   endif(LLVM_PATH_${NAME})
 endfunction()
 
-llvm_find_program(gv)
-llvm_find_program(circo)
-llvm_find_program(twopi)
-llvm_find_program(neato)
-llvm_find_program(fdp)
-llvm_find_program(dot)
-llvm_find_program(dotty)
-llvm_find_program(xdot xdot.py)
-llvm_find_program(Graphviz)
+if (LLVM_ENABLE_DOXYGEN)
+  llvm_find_program(dot)
+endif ()
 
 if( LLVM_ENABLE_FFI )
   find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR})
@@ -304,25 +298,6 @@ else()
   set(ENABLE_PIC 0)
 endif()
 
-find_package(LibXml2)
-if (LIBXML2_FOUND)
-  set(CLANG_HAVE_LIBXML 1)
-  # When cross-compiling, liblzma is not detected as a dependency for libxml2,
-  # which makes linking c-index-test fail. But for native builds, all libraries
-  # are installed and checked by CMake before Makefiles are generated and everything
-  # works according to the plan. However, if a -llzma is added to native builds,
-  # an additional requirement on the static liblzma.a is required, but will not
-  # be checked by CMake, breaking native compilation.
-  # Since this is only pertinent to cross-compilations, and there's no way CMake
-  # can check for every foreign library on every OS, we add the dep and warn the dev.
-  if ( CMAKE_CROSSCOMPILING )
-    if (NOT PC_LIBXML_VERSION VERSION_LESS "2.8.0")
-      message(STATUS "Adding LZMA as a dep to XML2 for cross-compilation, make sure liblzma.a is available.")
-      set(LIBXML2_LIBRARIES ${LIBXML2_LIBRARIES} "-llzma")
-    endif ()
-  endif ()
-endif ()
-
 check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG)
 
 set(USE_NO_MAYBE_UNINITIALIZED 0)