[gn] port a774adb (BuiltinsX86_64.td)

Author: nico

llvm/utils/gn/secondary/clang/include/clang/Basic/BUILD.gn

@@ -99,6 +99,10 @@ clang_tablegen("BuiltinsX86") {
   args = [ "-gen-clang-builtins" ]
 }
 
+clang_tablegen("BuiltinsX86_64") {
+  args = [ "-gen-clang-builtins" ]
+}
+
 # ARM CDE, MVE, and NEON.
 
 clang_tablegen("arm_neon") {

llvm/utils/gn/secondary/clang/lib/Basic/BUILD.gn

@@ -27,6 +27,7 @@ static_library("Basic") {
     "//clang/include/clang/Basic:BuiltinsBPF",
     "//clang/include/clang/Basic:BuiltinsRISCV",
     "//clang/include/clang/Basic:BuiltinsX86",
+    "//clang/include/clang/Basic:BuiltinsX86_64",
     "//clang/include/clang/Basic:DiagnosticGroups",
     "//clang/include/clang/Basic:RegularKeywordAttrInfo",
     "//clang/include/clang/Basic:arm_cde_builtins",