diff --git a/llvm/utils/gn/secondary/lldb/source/Plugins/Process/Utility/BUILD.gn b/llvm/utils/gn/secondary/lldb/source/Plugins/Process/Utility/BUILD.gn
index 4f50b8fa5964e..b948c319d681f 100644
--- a/llvm/utils/gn/secondary/lldb/source/Plugins/Process/Utility/BUILD.gn
+++ b/llvm/utils/gn/secondary/lldb/source/Plugins/Process/Utility/BUILD.gn
@@ -71,6 +71,7 @@ static_library("Utility") {
     "RegisterInfoPOSIX_loongarch64.cpp",
     "RegisterInfoPOSIX_ppc64le.cpp",
     "RegisterInfoPOSIX_riscv64.cpp",
+    "RegisterInfos_x86_64_with_base_shared.cpp",
     "StopInfoMachException.cpp",
     "ThreadMemory.cpp",
   ]
diff --git a/llvm/utils/gn/secondary/lldb/source/Plugins/Process/elf-core/BUILD.gn b/llvm/utils/gn/secondary/lldb/source/Plugins/Process/elf-core/BUILD.gn
index cae531d77a746..2a838e8e8c6ab 100644
--- a/llvm/utils/gn/secondary/lldb/source/Plugins/Process/elf-core/BUILD.gn
+++ b/llvm/utils/gn/secondary/lldb/source/Plugins/Process/elf-core/BUILD.gn
@@ -15,6 +15,7 @@ static_library("elf-core") {
   include_dirs = [ "//lldb/source" ]
   sources = [
     "ProcessElfCore.cpp",
+    "RegisterContextLinuxCore_x86_64.cpp",
     "RegisterContextPOSIXCore_arm.cpp",
     "RegisterContextPOSIXCore_arm64.cpp",
     "RegisterContextPOSIXCore_mips64.cpp",