Adapt to new signature for llvm_install_symlink...

and match the usage pattern employed by other LLVM projects.

For context about the underlying change see  https://reviews.llvm.org/D117977

Addresses rdar://101396797

Author: edymtt

CMakeLists.txt

@@ -321,6 +321,10 @@ if(SWIFT_PROFDATA_FILE AND EXISTS ${SWIFT_PROFDATA_FILE})
   add_definitions("-fprofile-instr-use=${SWIFT_PROFDATA_FILE}")
 endif()
 
+set(SWIFT_TOOLS_INSTALL_DIR "bin" CACHE PATH
+  "Path for binary subdirectory to use during installation.
+  Used by add_swift_tool_symlink in AddSwift.cmake so that llvm_install_symlink generates the installation script properly.")
+
 #
 # User-configurable Swift Standard Library specific options.
 #

cmake/modules/AddSwift.cmake

@@ -957,8 +957,8 @@ function(add_swift_fuzzer_host_tool executable)
 endfunction()
 
 macro(add_swift_tool_symlink name dest component)
-  add_llvm_tool_symlink(${name} ${dest} ALWAYS_GENERATE)
-  llvm_install_symlink(${name} ${dest} ALWAYS_GENERATE COMPONENT ${component})
+  llvm_add_tool_symlink(SWIFT ${name} ${dest} ALWAYS_GENERATE)
+  llvm_install_symlink(SWIFT ${name} ${dest} ALWAYS_GENERATE COMPONENT ${component})
 endmacro()
 
 # Declare that files in this library are built with LLVM's support