diff --git a/clang/include/clang/Basic/X86Target.def b/clang/include/clang/Basic/X86Target.def
deleted file mode 100644
--- a/clang/include/clang/Basic/X86Target.def
+++ /dev/null
@@ -1,59 +0,0 @@
-//===--- X86Target.def - X86 Feature/Processor Database ---------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the X86-specific Features and Processors, as used by
-// the X86 Targets.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef CPU_SPECIFIC
-#define CPU_SPECIFIC(NAME, MANGLING, FEATURES)
-#endif
-
-#ifndef CPU_SPECIFIC_ALIAS
-#define CPU_SPECIFIC_ALIAS(NEW_NAME, NAME)
-#endif
-
-// FIXME: When commented out features are supported in LLVM, enable them here.
-CPU_SPECIFIC("generic", 'A', "")
-CPU_SPECIFIC("pentium", 'B', "")
-CPU_SPECIFIC("pentium_pro", 'C', "+cmov")
-CPU_SPECIFIC("pentium_mmx", 'D', "+mmx")
-CPU_SPECIFIC("pentium_ii", 'E', "+cmov,+mmx")
-CPU_SPECIFIC("pentium_iii", 'H', "+cmov,+mmx,+sse")
-CPU_SPECIFIC_ALIAS("pentium_iii_no_xmm_regs", "pentium_iii")
-CPU_SPECIFIC("pentium_4", 'J', "+cmov,+mmx,+sse,+sse2")
-CPU_SPECIFIC("pentium_m", 'K', "+cmov,+mmx,+sse,+sse2")
-CPU_SPECIFIC("pentium_4_sse3", 'L', "+cmov,+mmx,+sse,+sse2,+sse3")
-CPU_SPECIFIC("core_2_duo_ssse3", 'M', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3")
-CPU_SPECIFIC("core_2_duo_sse4_1", 'N', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1")
-CPU_SPECIFIC("atom", 'O', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+movbe")
-CPU_SPECIFIC("atom_sse4_2", 'c', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt")
-CPU_SPECIFIC("core_i7_sse4_2", 'P', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt")
-CPU_SPECIFIC("core_aes_pclmulqdq", 'Q', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt")
-CPU_SPECIFIC("atom_sse4_2_movbe", 'd', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt")
-CPU_SPECIFIC("goldmont", 'i', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt")
-CPU_SPECIFIC("sandybridge", 'R', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt,+avx")
-CPU_SPECIFIC_ALIAS("core_2nd_gen_avx", "sandybridge")
-CPU_SPECIFIC("ivybridge", 'S', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt,+f16c,+avx")
-CPU_SPECIFIC_ALIAS("core_3rd_gen_avx", "ivybridge")
-CPU_SPECIFIC("haswell", 'V', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2")
-CPU_SPECIFIC_ALIAS("core_4th_gen_avx", "haswell")
-CPU_SPECIFIC("core_4th_gen_avx_tsx", 'W', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2")
-CPU_SPECIFIC("broadwell", 'X', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+adx")
-CPU_SPECIFIC_ALIAS("core_5th_gen_avx", "broadwell")
-CPU_SPECIFIC("core_5th_gen_avx_tsx", 'Y', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+adx")
-CPU_SPECIFIC("knl", 'Z', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+avx512f,+adx,+avx512er,+avx512pf,+avx512cd")
-CPU_SPECIFIC_ALIAS("mic_avx512", "knl")
-CPU_SPECIFIC("skylake", 'b', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+adx,+mpx")
-CPU_SPECIFIC( "skylake_avx512", 'a', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+avx512dq,+avx512f,+adx,+avx512cd,+avx512bw,+avx512vl,+clwb")
-CPU_SPECIFIC("cannonlake", 'e', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+avx512dq,+avx512f,+adx,+avx512ifma,+avx512cd,+avx512bw,+avx512vl,+avx512vbmi")
-CPU_SPECIFIC("knm", 'j', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+avx512f,+adx,+avx512er,+avx512pf,+avx512cd,+avx5124fmaps,+avx5124vnniw,+avx512vpopcntdq")
-
-#undef CPU_SPECIFIC_ALIAS
-#undef CPU_SPECIFIC
diff --git a/clang/lib/Basic/Targets/X86.cpp b/clang/lib/Basic/Targets/X86.cpp
--- a/clang/lib/Basic/Targets/X86.cpp
+++ b/clang/lib/Basic/Targets/X86.cpp
@@ -1105,21 +1105,21 @@
   return llvm::StringSwitch<bool>(Name)
 #define CPU_SPECIFIC(NAME, MANGLING, FEATURES) .Case(NAME, true)
 #define CPU_SPECIFIC_ALIAS(NEW_NAME, NAME) .Case(NEW_NAME, true)
-#include "clang/Basic/X86Target.def"
+#include "llvm/Support/X86TargetParser.def"
       .Default(false);
 }
 
 static StringRef CPUSpecificCPUDispatchNameDealias(StringRef Name) {
   return llvm::StringSwitch<StringRef>(Name)
 #define CPU_SPECIFIC_ALIAS(NEW_NAME, NAME) .Case(NEW_NAME, NAME)
-#include "clang/Basic/X86Target.def"
+#include "llvm/Support/X86TargetParser.def"
       .Default(Name);
 }
 
 char X86TargetInfo::CPUSpecificManglingCharacter(StringRef Name) const {
   return llvm::StringSwitch<char>(CPUSpecificCPUDispatchNameDealias(Name))
 #define CPU_SPECIFIC(NAME, MANGLING, FEATURES) .Case(NAME, MANGLING)
-#include "clang/Basic/X86Target.def"
+#include "llvm/Support/X86TargetParser.def"
       .Default(0);
 }
 
@@ -1128,7 +1128,7 @@
   StringRef WholeList =
       llvm::StringSwitch<StringRef>(CPUSpecificCPUDispatchNameDealias(Name))
 #define CPU_SPECIFIC(NAME, MANGLING, FEATURES) .Case(NAME, FEATURES)
-#include "clang/Basic/X86Target.def"
+#include "llvm/Support/X86TargetParser.def"
           .Default("");
   WholeList.split(Features, ',', /*MaxSplit=*/-1, /*KeepEmpty=*/false);
 }
diff --git a/llvm/include/llvm/Support/X86TargetParser.def b/llvm/include/llvm/Support/X86TargetParser.def
--- a/llvm/include/llvm/Support/X86TargetParser.def
+++ b/llvm/include/llvm/Support/X86TargetParser.def
@@ -208,3 +208,49 @@
 X86_FEATURE       (LVI_LOAD_HARDENING,          "lvi-load-hardening")
 #undef X86_FEATURE_COMPAT
 #undef X86_FEATURE
+
+#ifndef CPU_SPECIFIC
+#define CPU_SPECIFIC(NAME, MANGLING, FEATURES)
+#endif
+
+#ifndef CPU_SPECIFIC_ALIAS
+#define CPU_SPECIFIC_ALIAS(NEW_NAME, NAME)
+#endif
+
+CPU_SPECIFIC("generic", 'A', "")
+CPU_SPECIFIC("pentium", 'B', "")
+CPU_SPECIFIC("pentium_pro", 'C', "+cmov")
+CPU_SPECIFIC("pentium_mmx", 'D', "+mmx")
+CPU_SPECIFIC("pentium_ii", 'E', "+cmov,+mmx")
+CPU_SPECIFIC("pentium_iii", 'H', "+cmov,+mmx,+sse")
+CPU_SPECIFIC_ALIAS("pentium_iii_no_xmm_regs", "pentium_iii")
+CPU_SPECIFIC("pentium_4", 'J', "+cmov,+mmx,+sse,+sse2")
+CPU_SPECIFIC("pentium_m", 'K', "+cmov,+mmx,+sse,+sse2")
+CPU_SPECIFIC("pentium_4_sse3", 'L', "+cmov,+mmx,+sse,+sse2,+sse3")
+CPU_SPECIFIC("core_2_duo_ssse3", 'M', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3")
+CPU_SPECIFIC("core_2_duo_sse4_1", 'N', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1")
+CPU_SPECIFIC("atom", 'O', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+movbe")
+CPU_SPECIFIC("atom_sse4_2", 'c', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt")
+CPU_SPECIFIC("core_i7_sse4_2", 'P', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt")
+CPU_SPECIFIC("core_aes_pclmulqdq", 'Q', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt")
+CPU_SPECIFIC("atom_sse4_2_movbe", 'd', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt")
+CPU_SPECIFIC("goldmont", 'i', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt")
+CPU_SPECIFIC("sandybridge", 'R', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt,+avx")
+CPU_SPECIFIC_ALIAS("core_2nd_gen_avx", "sandybridge")
+CPU_SPECIFIC("ivybridge", 'S', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+popcnt,+f16c,+avx")
+CPU_SPECIFIC_ALIAS("core_3rd_gen_avx", "ivybridge")
+CPU_SPECIFIC("haswell", 'V', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2")
+CPU_SPECIFIC_ALIAS("core_4th_gen_avx", "haswell")
+CPU_SPECIFIC("core_4th_gen_avx_tsx", 'W', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2")
+CPU_SPECIFIC("broadwell", 'X', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+adx")
+CPU_SPECIFIC_ALIAS("core_5th_gen_avx", "broadwell")
+CPU_SPECIFIC("core_5th_gen_avx_tsx", 'Y', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+adx")
+CPU_SPECIFIC("knl", 'Z', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+avx512f,+adx,+avx512er,+avx512pf,+avx512cd")
+CPU_SPECIFIC_ALIAS("mic_avx512", "knl")
+CPU_SPECIFIC("skylake", 'b', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+adx,+mpx")
+CPU_SPECIFIC( "skylake_avx512", 'a', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+avx512dq,+avx512f,+adx,+avx512cd,+avx512bw,+avx512vl,+clwb")
+CPU_SPECIFIC("cannonlake", 'e', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+avx512dq,+avx512f,+adx,+avx512ifma,+avx512cd,+avx512bw,+avx512vl,+avx512vbmi")
+CPU_SPECIFIC("knm", 'j', "+cmov,+mmx,+sse,+sse2,+sse3,+ssse3,+sse4.1,+sse4.2,+movbe,+popcnt,+f16c,+avx,+fma,+bmi,+lzcnt,+avx2,+avx512f,+adx,+avx512er,+avx512pf,+avx512cd,+avx5124fmaps,+avx5124vnniw,+avx512vpopcntdq")
+
+#undef CPU_SPECIFIC_ALIAS
+#undef CPU_SPECIFIC