[LLVM Pulldown ] Bump to LLVM rev 20a829937cc8cd69170b75c0bb7f31ad9ba19677 (#1108)

Author: Garra1980

build_tools/llvm_version.txt

@@ -1 +1 @@
-92164faf17d553359418b9f49c1a41d680d0de49
+20a829937cc8cd69170b75c0bb7f31ad9ba19677

include/imex/InitIMEXDialects.h

@@ -41,7 +41,6 @@ inline void registerAllDialects(::mlir::DialectRegistry &registry) {
   ndarray::registerAllExtensions(registry);
   // Register all external models.
   region::registerBufferizableOpInterfaceExternalModels(registry);
-  xevm::registerXeVMTargetInterfaceExternalModels(registry);
 }
 
 /// Append all the IMEX dialects to the registry contained in the given context.

lib/CMakeLists.txt

@@ -1,7 +1,6 @@
 add_subdirectory(Dialect)
 add_subdirectory(CAPI)
 add_subdirectory(Conversion)
-add_subdirectory(Target)
 add_subdirectory(Transforms)
 add_subdirectory(ExecutionEngine)
 add_subdirectory(Utils)