diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 56337177e060e..2a7beba73b697 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -190,7 +190,8 @@ X86 Support in Clang
 - The x86 intrinsics ``__rorb``, ``__rorw``, ``__rord``, ``__rorq`, ``_rotr``,
   ``_rotwr`` and ``_lrotr`` may now be used within constant expressions.
 
-- Support for ``-march=sapphirerapids`` was added.
+- Support for ``-march=alderlake``, ``-march=sapphirerapids`` and
+  ``-march=znver3`` was added.
 
 - Support for ``-march=x86-64-v[234]`` has been added.
   See :doc:`UsersManual` for details about these micro-architecture levels.
diff --git a/clang/lib/Basic/Targets/X86.cpp b/clang/lib/Basic/Targets/X86.cpp
index 3239e3231cc0c..4ce3a5d0327f7 100644
--- a/clang/lib/Basic/Targets/X86.cpp
+++ b/clang/lib/Basic/Targets/X86.cpp
@@ -468,6 +468,7 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
   case CK_IcelakeServer:
   case CK_Tigerlake:
   case CK_SapphireRapids:
+  case CK_Alderlake:
     // FIXME: Historically, we defined this legacy name, it would be nice to
     // remove it at some point. We've never exposed fine-grained names for
     // recent primary x86 CPUs, and we should keep it that way.
@@ -1308,6 +1309,7 @@ Optional<unsigned> X86TargetInfo::getCPUCacheLineSize() const {
     case CK_SapphireRapids:
     case CK_IcelakeClient:
     case CK_IcelakeServer:
+    case CK_Alderlake:
     case CK_KNL:
     case CK_KNM:
     // K7
diff --git a/clang/test/CodeGen/attr-target-mv.c b/clang/test/CodeGen/attr-target-mv.c
index 57b266403dfc7..adad3c936a993 100644
--- a/clang/test/CodeGen/attr-target-mv.c
+++ b/clang/test/CodeGen/attr-target-mv.c
@@ -12,6 +12,7 @@ int __attribute__((target("arch=icelake-server"))) foo(void) {return 7;}
 int __attribute__((target("arch=cooperlake"))) foo(void) {return 8;}
 int __attribute__((target("arch=tigerlake"))) foo(void) {return 9;}
 int __attribute__((target("arch=sapphirerapids"))) foo(void) {return 10;}
+int __attribute__((target("arch=alderlake"))) foo(void) {return 11;}
 int __attribute__((target("default"))) foo(void) { return 2; }
 
 int bar() {
@@ -94,6 +95,8 @@ __attribute__((target("avx,sse4.2"), used)) inline void foo_used2(int i, double
 // LINUX: ret i32 9
 // LINUX: define i32 @foo.arch_sapphirerapids()
 // LINUX: ret i32 10
+// LINUX: define i32 @foo.arch_alderlake()
+// LINUX: ret i32 11
 // LINUX: define i32 @foo()
 // LINUX: ret i32 2
 // LINUX: define i32 @bar()
diff --git a/clang/test/CodeGen/target-builtin-noerror.c b/clang/test/CodeGen/target-builtin-noerror.c
index 42164303e4a6b..50967c6657cdc 100644
--- a/clang/test/CodeGen/target-builtin-noerror.c
+++ b/clang/test/CodeGen/target-builtin-noerror.c
@@ -85,6 +85,7 @@ void verifyfeaturestrings() {
 }
 
 void verifycpustrings() {
+  (void)__builtin_cpu_is("alderlake");
   (void)__builtin_cpu_is("amd");
   (void)__builtin_cpu_is("amdfam10h");
   (void)__builtin_cpu_is("amdfam15h");
diff --git a/clang/test/Driver/x86-march.c b/clang/test/Driver/x86-march.c
index 26ffc161c2736..871f47109b405 100644
--- a/clang/test/Driver/x86-march.c
+++ b/clang/test/Driver/x86-march.c
@@ -80,6 +80,10 @@
 // RUN:   | FileCheck %s -check-prefix=tigerlake
 // tigerlake: "-target-cpu" "tigerlake"
 //
+// RUN: %clang -target x86_64-unknown-unknown -c -### %s -march=alderlake 2>&1 \
+// RUN:   | FileCheck %s -check-prefix=alderlake
+// alderlake: "-target-cpu" "alderlake"
+//
 // RUN: %clang -target x86_64-unknown-unknown -c -### %s -march=lakemont 2>&1 \
 // RUN:   | FileCheck %s -check-prefix=lakemont
 // lakemont: "-target-cpu" "lakemont"
diff --git a/clang/test/Misc/target-invalid-cpu-note.c b/clang/test/Misc/target-invalid-cpu-note.c
index 82165de6f0797..d54403331f579 100644
--- a/clang/test/Misc/target-invalid-cpu-note.c
+++ b/clang/test/Misc/target-invalid-cpu-note.c
@@ -21,7 +21,7 @@
 // X86-SAME: nocona, core2, penryn, bonnell, atom, silvermont, slm, goldmont, goldmont-plus, tremont,
 // X86-SAME: nehalem, corei7, westmere, sandybridge, corei7-avx, ivybridge,
 // X86-SAME: core-avx-i, haswell, core-avx2, broadwell, skylake, skylake-avx512,
-// X86-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, knl, knm, lakemont, k6, k6-2, k6-3,
+// X86-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, alderlake, 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, znver2, znver3,
@@ -33,7 +33,7 @@
 // X86_64-SAME: atom, silvermont, slm, goldmont, goldmont-plus, tremont, nehalem, corei7, westmere,
 // X86_64-SAME: sandybridge, corei7-avx, ivybridge, core-avx-i, haswell,
 // X86_64-SAME: core-avx2, broadwell, skylake, skylake-avx512, skx, cascadelake, cooperlake, cannonlake,
-// X86_64-SAME: icelake-client, icelake-server, tigerlake, sapphirerapids, knl, knm, k8, athlon64, athlon-fx, opteron, k8-sse3,
+// X86_64-SAME: icelake-client, icelake-server, tigerlake, sapphirerapids, alderlake, 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, znver2, znver3,
 // X86_64-SAME: x86-64, x86-64-v2, x86-64-v3, x86-64-v4{{$}}
@@ -46,7 +46,7 @@
 // TUNE_X86-SAME: nocona, core2, penryn, bonnell, atom, silvermont, slm, goldmont, goldmont-plus, tremont,
 // TUNE_X86-SAME: nehalem, corei7, westmere, sandybridge, corei7-avx, ivybridge,
 // TUNE_X86-SAME: core-avx-i, haswell, core-avx2, broadwell, skylake, skylake-avx512,
-// TUNE_X86-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, knl, knm, lakemont, k6, k6-2, k6-3,
+// TUNE_X86-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, alderlake, knl, knm, lakemont, k6, k6-2, k6-3,
 // TUNE_X86-SAME: athlon, athlon-tbird, athlon-xp, athlon-mp, athlon-4, k8, athlon64,
 // TUNE_X86-SAME: athlon-fx, opteron, k8-sse3, athlon64-sse3, opteron-sse3, amdfam10,
 // TUNE_X86-SAME: barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2, znver3,
@@ -60,7 +60,7 @@
 // TUNE_X86_64-SAME: nocona, core2, penryn, bonnell, atom, silvermont, slm, goldmont, goldmont-plus, tremont,
 // TUNE_X86_64-SAME: nehalem, corei7, westmere, sandybridge, corei7-avx, ivybridge,
 // TUNE_X86_64-SAME: core-avx-i, haswell, core-avx2, broadwell, skylake, skylake-avx512,
-// TUNE_X86_64-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, knl, knm, lakemont, k6, k6-2, k6-3,
+// TUNE_X86_64-SAME: skx, cascadelake, cooperlake, cannonlake, icelake-client, icelake-server, tigerlake, sapphirerapids, alderlake, knl, knm, lakemont, k6, k6-2, k6-3,
 // TUNE_X86_64-SAME: athlon, athlon-tbird, athlon-xp, athlon-mp, athlon-4, k8, athlon64,
 // TUNE_X86_64-SAME: athlon-fx, opteron, k8-sse3, athlon64-sse3, opteron-sse3, amdfam10,
 // TUNE_X86_64-SAME: barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2, znver3,
diff --git a/clang/test/Preprocessor/predefined-arch-macros.c b/clang/test/Preprocessor/predefined-arch-macros.c
index 65089e8f97c79..f469b9aded64f 100644
--- a/clang/test/Preprocessor/predefined-arch-macros.c
+++ b/clang/test/Preprocessor/predefined-arch-macros.c
@@ -1775,6 +1775,91 @@
 // CHECK_SPR_M64: #define __x86_64 1
 // CHECK_SPR_M64: #define __x86_64__ 1
 
+// RUN: %clang -march=alderlake -m32 -E -dM %s -o - 2>&1 \
+// RUN:     -target i386-unknown-linux \
+// RUN:   | FileCheck -match-full-lines %s -check-prefix=CHECK_ADL_M32
+// CHECK_ADL_M32: #define __ADX__ 1
+// CHECK_ADL_M32: #define __AES__ 1
+// CHECK_ADL_M32: #define __AVX2__ 1
+// CHECK_ADL_M32-NOT: AVX512
+// CHECK_ADL_M32: #define __AVX__ 1
+// CHECK_ADL_M32: #define __BMI2__ 1
+// CHECK_ADL_M32: #define __BMI__ 1
+// CHECK_ADL_M32: #define __CLDEMOTE__ 1
+// CHECK_ADL_M32: #define __CLFLUSHOPT__ 1
+// CHECK_ADL_M32: #define __F16C__ 1
+// CHECK_ADL_M32: #define __FMA__ 1
+// CHECK_ADL_M32: #define __HRESET__ 1
+// CHECK_ADL_M32: #define __INVPCID__ 1
+// CHECK_ADL_M32: #define __LZCNT__ 1
+// CHECK_ADL_M32: #define __MMX__ 1
+// CHECK_ADL_M32: #define __MOVBE__ 1
+// CHECK_ADL_M32: #define __PCLMUL__ 1
+// CHECK_ADL_M32: #define __POPCNT__ 1
+// CHECK_ADL_M32: #define __PRFCHW__ 1
+// CHECK_ADL_M32: #define __PTWRITE__ 1
+// CHECK_ADL_M32: #define __RDRND__ 1
+// CHECK_ADL_M32: #define __RDSEED__ 1
+// CHECK_ADL_M32: #define __SERIALIZE__ 1
+// CHECK_ADL_M32: #define __SGX__ 1
+// CHECK_ADL_M32: #define __SSE2__ 1
+// CHECK_ADL_M32: #define __SSE3__ 1
+// CHECK_ADL_M32: #define __SSE4_1__ 1
+// CHECK_ADL_M32: #define __SSE4_2__ 1
+// CHECK_ADL_M32: #define __SSE__ 1
+// CHECK_ADL_M32: #define __SSSE3__ 1
+// CHECK_ADL_M32: #define __WAITPKG__ 1
+// CHECK_ADL_M32: #define __XSAVEC__ 1
+// CHECK_ADL_M32: #define __XSAVEOPT__ 1
+// CHECK_ADL_M32: #define __XSAVES__ 1
+// CHECK_ADL_M32: #define __XSAVE__ 1
+// CHECK_ADL_M32: #define i386 1
+
+// RUN: %clang -march=alderlake -m64 -E -dM %s -o - 2>&1 \
+// RUN:     -target i386-unknown-linux \
+// RUN:   | FileCheck -match-full-lines %s -check-prefix=CHECK_ADL_M64
+// CHECK_ADL_M64: #define __ADX__ 1
+// CHECK_ADL_M64: #define __AES__ 1
+// CHECK_ADL_M64: #define __AVX2__ 1
+// CHECK_ADL_M64-NOT: AVX512
+// CHECK_ADL_M64: #define __AVX__ 1
+// CHECK_ADL_M64: #define __BMI2__ 1
+// CHECK_ADL_M64: #define __BMI__ 1
+// CHECK_ADL_M64: #define __CLDEMOTE__ 1
+// CHECK_ADL_M64: #define __CLFLUSHOPT__ 1
+// CHECK_ADL_M64: #define __F16C__ 1
+// CHECK_ADL_M64: #define __FMA__ 1
+// CHECK_ADL_M64: #define __HRESET__ 1
+// CHECK_ADL_M64: #define __INVPCID__ 1
+// CHECK_ADL_M64: #define __LZCNT__ 1
+// CHECK_ADL_M64: #define __MMX__ 1
+// CHECK_ADL_M64: #define __MOVBE__ 1
+// CHECK_ADL_M64: #define __PCLMUL__ 1
+// CHECK_ADL_M64: #define __POPCNT__ 1
+// CHECK_ADL_M64: #define __PRFCHW__ 1
+// CHECK_ADL_M64: #define __PTWRITE__ 1
+// CHECK_ADL_M64: #define __RDRND__ 1
+// CHECK_ADL_M64: #define __RDSEED__ 1
+// CHECK_ADL_M64: #define __SERIALIZE__ 1
+// CHECK_ADL_M64: #define __SGX__ 1
+// CHECK_ADL_M64: #define __SSE2_MATH__ 1
+// CHECK_ADL_M64: #define __SSE2__ 1
+// CHECK_ADL_M64: #define __SSE3__ 1
+// CHECK_ADL_M64: #define __SSE4_1__ 1
+// CHECK_ADL_M64: #define __SSE4_2__ 1
+// CHECK_ADL_M64: #define __SSE_MATH__ 1
+// CHECK_ADL_M64: #define __SSE__ 1
+// CHECK_ADL_M64: #define __SSSE3__ 1
+// CHECK_ADL_M64: #define __WAITPKG__ 1
+// CHECK_ADL_M64: #define __XSAVEC__ 1
+// CHECK_ADL_M64: #define __XSAVEOPT__ 1
+// CHECK_ADL_M64: #define __XSAVES__ 1
+// CHECK_ADL_M64: #define __XSAVE__ 1
+// CHECK_ADL_M64: #define __amd64 1
+// CHECK_ADL_M64: #define __amd64__ 1
+// CHECK_ADL_M64: #define __x86_64 1
+// CHECK_ADL_M64: #define __x86_64__ 1
+
 // RUN: %clang -march=atom -m32 -E -dM %s -o - 2>&1 \
 // RUN:     -target i386-unknown-linux \
 // RUN:   | FileCheck -match-full-lines %s -check-prefix=CHECK_ATOM_M32
diff --git a/compiler-rt/lib/builtins/cpu_model.c b/compiler-rt/lib/builtins/cpu_model.c
index d6dc73b88bc29..e8b23d5e5381c 100644
--- a/compiler-rt/lib/builtins/cpu_model.c
+++ b/compiler-rt/lib/builtins/cpu_model.c
@@ -85,6 +85,7 @@ enum ProcessorSubtypes {
   INTEL_COREI7_TIGERLAKE,
   INTEL_COREI7_COOPERLAKE,
   INTEL_COREI7_SAPPHIRERAPIDS,
+  INTEL_COREI7_ALDERLAKE,
   CPU_SUBTYPE_MAX
 };
 
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 5089cc6ca93e8..e4329d0aac60b 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -109,7 +109,8 @@ During this release ...
 * The 'mpx' feature was removed from the backend. It had been removed from clang
   frontend in 10.0. Mention of the 'mpx' feature in an IR file will print a
   message to stderr, but IR should still compile.
-* Support for ``-march=sapphirerapids`` and ``-march=x86-64-v[234]`` has been added.
+* Support for ``-march=alderlake``, ``-march=sapphirerapids``,
+  ``-march=znver3`` and ``-march=x86-64-v[234]`` has been added.
 * The assembler now has support for {disp32} and {disp8} pseudo prefixes for
   controlling displacement size for memory operands and jump displacements. The
   assembler also supports the .d32 and .d8 mnemonic suffixes to do the same.
diff --git a/llvm/include/llvm/Support/X86TargetParser.def b/llvm/include/llvm/Support/X86TargetParser.def
index 4a0ba26f49f98..3d7a7756af8a6 100644
--- a/llvm/include/llvm/Support/X86TargetParser.def
+++ b/llvm/include/llvm/Support/X86TargetParser.def
@@ -85,6 +85,7 @@ X86_CPU_SUBTYPE(INTEL_COREI7_CASCADELAKE,    "cascadelake")
 X86_CPU_SUBTYPE(INTEL_COREI7_TIGERLAKE,      "tigerlake")
 X86_CPU_SUBTYPE(INTEL_COREI7_COOPERLAKE,     "cooperlake")
 X86_CPU_SUBTYPE(INTEL_COREI7_SAPPHIRERAPIDS, "sapphirerapids")
+X86_CPU_SUBTYPE(INTEL_COREI7_ALDERLAKE,      "alderlake")
 #undef X86_CPU_SUBTYPE
 
 
diff --git a/llvm/include/llvm/Support/X86TargetParser.h b/llvm/include/llvm/Support/X86TargetParser.h
index 9a2599bd88b4e..2d5083023a117 100644
--- a/llvm/include/llvm/Support/X86TargetParser.h
+++ b/llvm/include/llvm/Support/X86TargetParser.h
@@ -101,6 +101,7 @@ enum CPUKind {
   CK_IcelakeServer,
   CK_Tigerlake,
   CK_SapphireRapids,
+  CK_Alderlake,
   CK_KNL,
   CK_KNM,
   CK_Lakemont,
diff --git a/llvm/lib/Support/X86TargetParser.cpp b/llvm/lib/Support/X86TargetParser.cpp
index 0a803d0a6a3c4..39069b03da9b3 100644
--- a/llvm/lib/Support/X86TargetParser.cpp
+++ b/llvm/lib/Support/X86TargetParser.cpp
@@ -206,6 +206,9 @@ constexpr FeatureBitset FeaturesSapphireRapids =
     FeatureENQCMD | FeatureMOVDIR64B | FeatureMOVDIRI | FeaturePTWRITE |
     FeatureSERIALIZE | FeatureSHSTK | FeatureTSXLDTRK | FeatureUINTR |
     FeatureWAITPKG;
+constexpr FeatureBitset FeaturesAlderlake =
+    FeaturesSkylakeClient | FeatureCLDEMOTE | FeatureHRESET | FeaturePTWRITE |
+    FeatureSERIALIZE | FeatureWAITPKG;
 
 // Intel Atom processors.
 // Bonnell has feature parity with Core2 and adds MOVBE.
@@ -357,6 +360,8 @@ constexpr ProcInfo Processors[] = {
   { {"tigerlake"}, CK_Tigerlake, FEATURE_AVX512VP2INTERSECT, FeaturesTigerlake },
   // Sapphire Rapids microarchitecture based processors.
   { {"sapphirerapids"}, CK_SapphireRapids, FEATURE_AVX512VP2INTERSECT, FeaturesSapphireRapids },
+  // Alderlake microarchitecture based processors.
+  { {"alderlake"}, CK_Alderlake, FEATURE_AVX2, FeaturesAlderlake },
   // Knights Landing processor.
   { {"knl"}, CK_KNL, FEATURE_AVX512F, FeaturesKNL },
   // Knights Mill processor.
diff --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index f39fbf1fca77d..ea09503a4a3b0 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -780,6 +780,16 @@ def ProcessorFeatures {
   list<SubtargetFeature> SPRFeatures =
     !listconcat(ICXFeatures, SPRAdditionalFeatures);
 
+  // Alderlake
+  list<SubtargetFeature> ADLAdditionalFeatures = [FeatureCLDEMOTE,
+                                                  FeatureHRESET,
+                                                  FeaturePTWRITE,
+                                                  FeatureSERIALIZE,
+                                                  FeatureWAITPKG];
+  list<SubtargetFeature> ADLTuning = SKLTuning;
+  list<SubtargetFeature> ADLFeatures =
+    !listconcat(SKLFeatures, ADLAdditionalFeatures);
+
   // Atom
   list<SubtargetFeature> AtomFeatures = [FeatureX87,
                                          FeatureCMPXCHG8B,
@@ -1281,6 +1291,8 @@ def : ProcModel<"tigerlake", SkylakeServerModel,
                 ProcessorFeatures.TGLFeatures, ProcessorFeatures.TGLTuning>;
 def : ProcModel<"sapphirerapids", SkylakeServerModel,
                 ProcessorFeatures.SPRFeatures, ProcessorFeatures.SPRTuning>;
+def : ProcModel<"alderlake", SkylakeClientModel,
+                ProcessorFeatures.ADLFeatures, ProcessorFeatures.ADLTuning>;
 
 // AMD CPUs.
 
diff --git a/llvm/test/CodeGen/X86/cpus-intel.ll b/llvm/test/CodeGen/X86/cpus-intel.ll
index b065c6d34f80a..eb5786dc08114 100644
--- a/llvm/test/CodeGen/X86/cpus-intel.ll
+++ b/llvm/test/CodeGen/X86/cpus-intel.ll
@@ -41,6 +41,7 @@
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=icelake-server 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=tigerlake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=sapphirerapids 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
+; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=alderlake 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=atom 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=bonnell 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty
 ; RUN: llc < %s -o /dev/null -mtriple=x86_64-unknown-unknown -mcpu=silvermont 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ERROR --allow-empty