Index: include/clang/Basic/X86Target.def
===================================================================
--- include/clang/Basic/X86Target.def
+++ include/clang/Basic/X86Target.def
@@ -236,6 +236,7 @@
 /// Zen architecture processors.
 //@{
 PROC_WITH_FEAT(ZNVER1, "znver1", PROC_64_BIT, FEATURE_AVX2)
+PROC_WITH_FEAT(ZNVER2, "znver2", PROC_64_BIT, FEATURE_AVX2)
 //@}
 
 /// This specification is deprecated and will be removed in the future.
Index: lib/Basic/Targets/X86.cpp
===================================================================
--- lib/Basic/Targets/X86.cpp
+++ lib/Basic/Targets/X86.cpp
@@ -347,6 +347,11 @@
     setFeatureEnabledImpl(Features, "sahf", true);
     break;
 
+  case CK_ZNVER2:
+    setFeatureEnabledImpl(Features, "clwb", true);
+    setFeatureEnabledImpl(Features, "rdpid", true);
+    setFeatureEnabledImpl(Features, "wbnoinvd", true);
+    LLVM_FALLTHROUGH;
   case CK_ZNVER1:
     setFeatureEnabledImpl(Features, "adx", true);
     setFeatureEnabledImpl(Features, "aes", true);
@@ -864,7 +869,7 @@
 /// definitions for this particular subtarget.
 void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
                                      MacroBuilder &Builder) const {
-  // Inline assembly supports X86 flag outputs. 
+  // Inline assembly supports X86 flag outputs.
   Builder.defineMacro("__GCC_ASM_FLAG_OUTPUTS__");
 
   std::string CodeModel = getTargetOpts().CodeModel;
@@ -1030,6 +1035,9 @@
   case CK_ZNVER1:
     defineCPUMacros(Builder, "znver1");
     break;
+  case CK_ZNVER2:
+    defineCPUMacros(Builder, "znver2");
+    break;
   case CK_Geode:
     defineCPUMacros(Builder, "geode");
     break;
Index: test/CodeGen/target-builtin-noerror.c
===================================================================
--- test/CodeGen/target-builtin-noerror.c
+++ test/CodeGen/target-builtin-noerror.c
@@ -120,4 +120,5 @@
   (void)__builtin_cpu_is("tremont");
   (void)__builtin_cpu_is("westmere");
   (void)__builtin_cpu_is("znver1");
+  (void)__builtin_cpu_is("znver2");
 }
Index: test/Driver/x86-march.c
===================================================================
--- test/Driver/x86-march.c
+++ test/Driver/x86-march.c
@@ -159,3 +159,7 @@
 // RUN: %clang -target x86_64-unknown-unknown -c -### %s -march=znver1 2>&1 \
 // RUN:   | FileCheck %s -check-prefix=znver1
 // znver1: "-target-cpu" "znver1"
+//
+// RUN: %clang -target x86_64-unknown-unknown -c -### %s -march=znver2 2>&1 \
+// RUN:   | FileCheck %s -check-prefix=znver2
+// znver2: "-target-cpu" "znver2"
Index: test/Frontend/x86-target-cpu.c
===================================================================
--- test/Frontend/x86-target-cpu.c
+++ test/Frontend/x86-target-cpu.c
@@ -35,5 +35,6 @@
 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -target-cpu btver1 -verify %s
 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -target-cpu btver2 -verify %s
 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -target-cpu znver1 -verify %s
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -target-cpu znver2 -verify %s
 //
 // expected-no-diagnostics
Index: test/Misc/target-invalid-cpu-note.c
===================================================================
--- test/Misc/target-invalid-cpu-note.c
+++ test/Misc/target-invalid-cpu-note.c
@@ -19,7 +19,7 @@
 // X86-SAME: skx, cascadelake, cannonlake, icelake-client, icelake-server, knl, knm, lakemont, k6, k6-2, k6-3,
 // X86-SAME: athlon, athlon-tbird, athlon-xp, athlon-mp, athlon-4, k8, athlon64,
 // X86-SAME: athlon-fx, opteron, k8-sse3, athlon64-sse3, opteron-sse3, amdfam10,
-// X86-SAME: barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1,
+// X86-SAME: barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2,
 // X86-SAME: x86-64, geode
 
 // RUN: not %clang_cc1 -triple x86_64--- -target-cpu not-a-cpu -fsyntax-only %s 2>&1 | FileCheck %s --check-prefix X86_64
@@ -30,7 +30,7 @@
 // X86_64-SAME: core-avx2, broadwell, skylake, skylake-avx512, skx, cascadelake, cannonlake,
 // X86_64-SAME: icelake-client, icelake-server, knl, knm, k8, athlon64, athlon-fx, opteron, k8-sse3,
 // X86_64-SAME: athlon64-sse3, opteron-sse3, amdfam10, barcelona, btver1,
-// X86_64-SAME: btver2, bdver1, bdver2, bdver3, bdver4, znver1, x86-64
+// X86_64-SAME: btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2, x86-64
 
 // RUN: not %clang_cc1 -triple nvptx--- -target-cpu not-a-cpu -fsyntax-only %s 2>&1 | FileCheck %s --check-prefix NVPTX
 // NVPTX: error: unknown target CPU 'not-a-cpu'
@@ -39,9 +39,9 @@
 
 // RUN: not %clang_cc1 -triple r600--- -target-cpu not-a-cpu -fsyntax-only %s 2>&1 | FileCheck %s --check-prefix R600
 // R600: error: unknown target CPU 'not-a-cpu'
-// R600: note: valid target CPU values are: r600, rv630, rv635, r630, rs780, 
-// R600-SAME: rs880, rv610, rv620, rv670, rv710, rv730, rv740, rv770, cedar, 
-// R600-SAME: palm, cypress, hemlock, juniper, redwood, sumo, sumo2, barts, 
+// R600: note: valid target CPU values are: r600, rv630, rv635, r630, rs780,
+// R600-SAME: rs880, rv610, rv620, rv670, rv710, rv730, rv740, rv770, cedar,
+// R600-SAME: palm, cypress, hemlock, juniper, redwood, sumo, sumo2, barts,
 // R600-SAME: caicos, aruba, cayman, turks
 
 
@@ -49,7 +49,7 @@
 // AMDGCN: error: unknown target CPU 'not-a-cpu'
 // AMDGCN: note: valid target CPU values are: gfx600, tahiti, gfx601, hainan,
 // AMDGCN-SAME: oland, pitcairn, verde, gfx700, kaveri, gfx701, hawaii, gfx702,
-// AMDGCN-SAME: gfx703, kabini, mullins, gfx704, bonaire, gfx801, carrizo, 
+// AMDGCN-SAME: gfx703, kabini, mullins, gfx704, bonaire, gfx801, carrizo,
 // AMDGCN-SAME: gfx802, iceland, tonga, gfx803, fiji, polaris10, polaris11,
 // AMDGCN-SAME: gfx810, stoney, gfx900, gfx902
 
Index: test/Preprocessor/predefined-arch-macros.c
===================================================================
--- test/Preprocessor/predefined-arch-macros.c
+++ test/Preprocessor/predefined-arch-macros.c
@@ -2676,6 +2676,100 @@
 // CHECK_ZNVER1_M64: #define __znver1 1
 // CHECK_ZNVER1_M64: #define __znver1__ 1
 
+// RUN: %clang -march=znver2 -m32 -E -dM %s -o - 2>&1 \
+// RUN:     -target i386-unknown-linux \
+// RUN:   | FileCheck -match-full-lines %s -check-prefix=CHECK_ZNVER2_M32
+// CHECK_ZNVER2_M32-NOT: #define __3dNOW_A__ 1
+// CHECK_ZNVER2_M32-NOT: #define __3dNOW__ 1
+// CHECK_ZNVER2_M32: #define __ADX__ 1
+// CHECK_ZNVER2_M32: #define __AES__ 1
+// CHECK_ZNVER2_M32: #define __AVX2__ 1
+// CHECK_ZNVER2_M32: #define __AVX__ 1
+// CHECK_ZNVER2_M32: #define __BMI2__ 1
+// CHECK_ZNVER2_M32: #define __BMI__ 1
+// CHECK_ZNVER2_M32: #define __CLFLUSHOPT__ 1
+// CHECK_ZNVER2_M32: #define __CLWB__ 1
+// CHECK_ZNVER2_M32: #define __CLZERO__ 1
+// CHECK_ZNVER2_M32: #define __F16C__ 1
+// CHECK_ZNVER2_M32: #define __FMA__ 1
+// CHECK_ZNVER2_M32: #define __FSGSBASE__ 1
+// CHECK_ZNVER2_M32: #define __LZCNT__ 1
+// CHECK_ZNVER2_M32: #define __MMX__ 1
+// CHECK_ZNVER2_M32: #define __PCLMUL__ 1
+// CHECK_ZNVER2_M32: #define __POPCNT__ 1
+// CHECK_ZNVER2_M32: #define __PRFCHW__ 1
+// CHECK_ZNVER2_M32: #define __RDPID__ 1
+// CHECK_ZNVER2_M32: #define __RDRND__ 1
+// CHECK_ZNVER2_M32: #define __RDSEED__ 1
+// CHECK_ZNVER2_M32: #define __SHA__ 1
+// CHECK_ZNVER2_M32: #define __SSE2_MATH__ 1
+// CHECK_ZNVER2_M32: #define __SSE2__ 1
+// CHECK_ZNVER2_M32: #define __SSE3__ 1
+// CHECK_ZNVER2_M32: #define __SSE4A__ 1
+// CHECK_ZNVER2_M32: #define __SSE4_1__ 1
+// CHECK_ZNVER2_M32: #define __SSE4_2__ 1
+// CHECK_ZNVER2_M32: #define __SSE_MATH__ 1
+// CHECK_ZNVER2_M32: #define __SSE__ 1
+// CHECK_ZNVER2_M32: #define __SSSE3__ 1
+// CHECK_ZNVER2_M32: #define __WBNOINVD__ 1
+// CHECK_ZNVER2_M32: #define __XSAVEC__ 1
+// CHECK_ZNVER2_M32: #define __XSAVEOPT__ 1
+// CHECK_ZNVER2_M32: #define __XSAVES__ 1
+// CHECK_ZNVER2_M32: #define __XSAVE__ 1
+// CHECK_ZNVER2_M32: #define __i386 1
+// CHECK_ZNVER2_M32: #define __i386__ 1
+// CHECK_ZNVER2_M32: #define __tune_znver2__ 1
+// CHECK_ZNVER2_M32: #define __znver2 1
+// CHECK_ZNVER2_M32: #define __znver2__ 1
+
+// RUN: %clang -march=znver2 -m64 -E -dM %s -o - 2>&1 \
+// RUN:     -target i386-unknown-linux \
+// RUN:   | FileCheck -match-full-lines %s -check-prefix=CHECK_ZNVER2_M64
+// CHECK_ZNVER2_M64-NOT: #define __3dNOW_A__ 1
+// CHECK_ZNVER2_M64-NOT: #define __3dNOW__ 1
+// CHECK_ZNVER2_M64: #define __ADX__ 1
+// CHECK_ZNVER2_M64: #define __AES__ 1
+// CHECK_ZNVER2_M64: #define __AVX2__ 1
+// CHECK_ZNVER2_M64: #define __AVX__ 1
+// CHECK_ZNVER2_M64: #define __BMI2__ 1
+// CHECK_ZNVER2_M64: #define __BMI__ 1
+// CHECK_ZNVER2_M64: #define __CLFLUSHOPT__ 1
+// CHECK_ZNVER2_M64: #define __CLWB__ 1
+// CHECK_ZNVER2_M64: #define __CLZERO__ 1
+// CHECK_ZNVER2_M64: #define __F16C__ 1
+// CHECK_ZNVER2_M64: #define __FMA__ 1
+// CHECK_ZNVER2_M64: #define __FSGSBASE__ 1
+// CHECK_ZNVER2_M64: #define __LZCNT__ 1
+// CHECK_ZNVER2_M64: #define __MMX__ 1
+// CHECK_ZNVER2_M64: #define __PCLMUL__ 1
+// CHECK_ZNVER2_M64: #define __POPCNT__ 1
+// CHECK_ZNVER2_M64: #define __PRFCHW__ 1
+// CHECK_ZNVER2_M64: #define __RDPID__ 1
+// CHECK_ZNVER2_M64: #define __RDRND__ 1
+// CHECK_ZNVER2_M64: #define __RDSEED__ 1
+// CHECK_ZNVER2_M64: #define __SHA__ 1
+// CHECK_ZNVER2_M64: #define __SSE2_MATH__ 1
+// CHECK_ZNVER2_M64: #define __SSE2__ 1
+// CHECK_ZNVER2_M64: #define __SSE3__ 1
+// CHECK_ZNVER2_M64: #define __SSE4A__ 1
+// CHECK_ZNVER2_M64: #define __SSE4_1__ 1
+// CHECK_ZNVER2_M64: #define __SSE4_2__ 1
+// CHECK_ZNVER2_M64: #define __SSE_MATH__ 1
+// CHECK_ZNVER2_M64: #define __SSE__ 1
+// CHECK_ZNVER2_M64: #define __SSSE3__ 1
+// CHECK_ZNVER2_M64: #define __WBNOINVD__ 1
+// CHECK_ZNVER2_M64: #define __XSAVEC__ 1
+// CHECK_ZNVER2_M64: #define __XSAVEOPT__ 1
+// CHECK_ZNVER2_M64: #define __XSAVES__ 1
+// CHECK_ZNVER2_M64: #define __XSAVE__ 1
+// CHECK_ZNVER2_M64: #define __amd64 1
+// CHECK_ZNVER2_M64: #define __amd64__ 1
+// CHECK_ZNVER2_M64: #define __tune_znver2__ 1
+// CHECK_ZNVER2_M64: #define __x86_64 1
+// CHECK_ZNVER2_M64: #define __x86_64__ 1
+// CHECK_ZNVER2_M64: #define __znver2 1
+// CHECK_ZNVER2_M64: #define __znver2__ 1
+
 // End X86/GCC/Linux tests ------------------
 
 // Begin PPC/GCC/Linux tests ----------------