diff --git a/clang/lib/Basic/Targets/AArch64.h b/clang/lib/Basic/Targets/AArch64.h
--- a/clang/lib/Basic/Targets/AArch64.h
+++ b/clang/lib/Basic/Targets/AArch64.h
@@ -100,6 +100,8 @@
                                MacroBuilder &Builder) const;
   void getTargetDefinesARMV92A(const LangOptions &Opts,
                                MacroBuilder &Builder) const;
+  void getTargetDefinesARMV93A(const LangOptions &Opts,
+                               MacroBuilder &Builder) const;
   void getTargetDefines(const LangOptions &Opts,
                         MacroBuilder &Builder) const override;
 
diff --git a/clang/lib/Basic/Targets/AArch64.cpp b/clang/lib/Basic/Targets/AArch64.cpp
--- a/clang/lib/Basic/Targets/AArch64.cpp
+++ b/clang/lib/Basic/Targets/AArch64.cpp
@@ -45,6 +45,7 @@
   case llvm::AArch64::ArchKind::ARMV9A:
   case llvm::AArch64::ArchKind::ARMV9_1A:
   case llvm::AArch64::ArchKind::ARMV9_2A:
+  case llvm::AArch64::ArchKind::ARMV9_3A:
     return "9";
   default:
     return "8";
@@ -247,6 +248,12 @@
   getTargetDefinesARMV87A(Opts, Builder);
 }
 
+void AArch64TargetInfo::getTargetDefinesARMV93A(const LangOptions &Opts,
+                                                MacroBuilder &Builder) const {
+  // Armv9.3-A maps to Armv8.8-A
+  getTargetDefinesARMV88A(Opts, Builder);
+}
+
 void AArch64TargetInfo::getTargetDefines(const LangOptions &Opts,
                                          MacroBuilder &Builder) const {
   // Target identification.
@@ -464,6 +471,9 @@
   case llvm::AArch64::ArchKind::ARMV9_2A:
     getTargetDefinesARMV92A(Opts, Builder);
     break;
+  case llvm::AArch64::ArchKind::ARMV9_3A:
+    getTargetDefinesARMV93A(Opts, Builder);
+    break;
   }
 
   // All of the __sync_(bool|val)_compare_and_swap_(1|2|4|8) builtins work.
@@ -620,6 +630,8 @@
       ArchKind = llvm::AArch64::ArchKind::ARMV9_1A;
     if (Feature == "+v9.2a")
       ArchKind = llvm::AArch64::ArchKind::ARMV9_2A;
+    if (Feature == "+v9.3a")
+      ArchKind = llvm::AArch64::ArchKind::ARMV9_3A;
     if (Feature == "+v8r")
       ArchKind = llvm::AArch64::ArchKind::ARMV8R;
     if (Feature == "+fullfp16")
diff --git a/clang/lib/Basic/Targets/ARM.cpp b/clang/lib/Basic/Targets/ARM.cpp
--- a/clang/lib/Basic/Targets/ARM.cpp
+++ b/clang/lib/Basic/Targets/ARM.cpp
@@ -220,6 +220,8 @@
     return "9_1A";
   case llvm::ARM::ArchKind::ARMV9_2A:
     return "9_2A";
+  case llvm::ARM::ArchKind::ARMV9_3A:
+    return "9_3A";
   case llvm::ARM::ArchKind::ARMV8MBaseline:
     return "8M_BASE";
   case llvm::ARM::ArchKind::ARMV8MMainline:
@@ -939,7 +941,8 @@
 
   if (ArchKind == llvm::ARM::ArchKind::ARMV9A ||
       ArchKind == llvm::ARM::ArchKind::ARMV9_1A ||
-      ArchKind == llvm::ARM::ArchKind::ARMV9_2A) {
+      ArchKind == llvm::ARM::ArchKind::ARMV9_2A ||
+      ArchKind == llvm::ARM::ArchKind::ARMV9_3A) {
     Builder.defineMacro("__ARM_TARGET_COPROC", "1");
     Builder.defineMacro("__ARM_TARGET_COPROC_V9", "1");
   }
@@ -1003,6 +1006,7 @@
   case llvm::ARM::ArchKind::ARMV9A:
   case llvm::ARM::ArchKind::ARMV9_1A:
   case llvm::ARM::ArchKind::ARMV9_2A:
+  case llvm::ARM::ArchKind::ARMV9_3A:
     getTargetDefinesARMV83A(Opts, Builder);
     break;
   }
diff --git a/clang/lib/Driver/ToolChains/Arch/AArch64.cpp b/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
--- a/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
+++ b/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
@@ -104,7 +104,8 @@
          ArchKind == llvm::AArch64::ArchKind::ARMV8_7A ||
          ArchKind == llvm::AArch64::ArchKind::ARMV8_8A ||
          ArchKind == llvm::AArch64::ArchKind::ARMV9_1A ||
-         ArchKind == llvm::AArch64::ArchKind::ARMV9_2A) &&
+         ArchKind == llvm::AArch64::ArchKind::ARMV9_2A ||
+         ArchKind == llvm::AArch64::ArchKind::ARMV9_3A) &&
         Feature == "sve")
       Features.push_back("+f32mm");
   }
@@ -397,7 +398,8 @@
       std::find(ItBegin, ItEnd, "+v8.8a") != ItEnd ||
       std::find(ItBegin, ItEnd, "+v9a") != ItEnd ||
       std::find(ItBegin, ItEnd, "+v9.1a") != ItEnd ||
-      std::find(ItBegin, ItEnd, "+v9.2a") != ItEnd) {
+      std::find(ItBegin, ItEnd, "+v9.2a") != ItEnd ||
+      std::find(ItBegin, ItEnd, "+v9.3a") != ItEnd) {
     if (HasCrypto && !NoCrypto) {
       // Check if we have NOT disabled an algorithm with something like:
       //   +crypto, -algorithm
@@ -456,7 +458,8 @@
     }
   }
 
-  const char *Archs[] = {"+v8.6a", "+v8.7a", "+v8.8a", "+v9.1a", "+v9.2a"};
+  const char *Archs[] = {"+v8.6a", "+v8.7a", "+v8.8a",
+                         "+v9.1a", "+v9.2a", "+v9.3a"};
   auto Pos = std::find_first_of(Features.begin(), Features.end(),
                                 std::begin(Archs), std::end(Archs));
   if (Pos != std::end(Features))
diff --git a/clang/test/Driver/aarch64-cpus.c b/clang/test/Driver/aarch64-cpus.c
--- a/clang/test/Driver/aarch64-cpus.c
+++ b/clang/test/Driver/aarch64-cpus.c
@@ -876,6 +876,22 @@
 // RUN: %clang -target aarch64_be -mbig-endian -march=armv9.2-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV92A-BE %s
 // GENERICV92A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v9.2a" "-target-feature" "+i8mm" "-target-feature" "+bf16" "-target-feature" "+sve" "-target-feature" "+sve2"
 
+// RUN: %clang -target aarch64 -march=armv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A %s
+// RUN: %clang -target aarch64 -march=armv9.3-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A %s
+// RUN: %clang -target aarch64 -mlittle-endian -march=armv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A %s
+// RUN: %clang -target aarch64 -mlittle-endian -march=armv9.3-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A %s
+// RUN: %clang -target aarch64_be -mlittle-endian -march=armv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A %s
+// RUN: %clang -target aarch64_be -mlittle-endian -march=armv9.3-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A %s
+// GENERICV93A: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v9.3a"
+
+// RUN: %clang -target aarch64_be -march=armv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A-BE %s
+// RUN: %clang -target aarch64_be -march=armv9.3-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A-BE %s
+// RUN: %clang -target aarch64 -mbig-endian -march=armv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A-BE %s
+// RUN: %clang -target aarch64 -mbig-endian -march=armv9.3-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A-BE %s
+// RUN: %clang -target aarch64_be -mbig-endian -march=armv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A-BE %s
+// RUN: %clang -target aarch64_be -mbig-endian -march=armv9.3-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV93A-BE %s
+// GENERICV93A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v9.3a"
+
 // fullfp16 is off by default for v8a, feature must not be mentioned
 // RUN: %clang -target aarch64 -march=armv8a  -### -c %s 2>&1 | FileCheck -check-prefix=V82ANOFP16 -check-prefix=GENERIC %s
 // RUN: %clang -target aarch64 -march=armv8-a -### -c %s 2>&1 | FileCheck -check-prefix=V82ANOFP16 -check-prefix=GENERIC %s
diff --git a/clang/test/Driver/arm-cortex-cpus.c b/clang/test/Driver/arm-cortex-cpus.c
--- a/clang/test/Driver/arm-cortex-cpus.c
+++ b/clang/test/Driver/arm-cortex-cpus.c
@@ -437,6 +437,22 @@
 // RUN: %clang -target arm -march=armebv9.2-a -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-V92A %s
 // CHECK-BE-V92A: "-cc1"{{.*}} "-triple" "armebv9.2{{.*}}" "-target-cpu" "generic"
 
+// RUN: %clang -target armv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V93A %s
+// RUN: %clang -target arm -march=armv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V93A %s
+// RUN: %clang -target arm -march=armv9.3-a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V93A %s
+// RUN: %clang -target armv9.3a -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V93A %s
+// RUN: %clang -target arm -march=armv9.3a -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V93A %s
+// RUN: %clang -target arm -march=armv9.3-a -mlittle-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-V93A %s
+// CHECK-V93A: "-cc1"{{.*}} "-triple" "armv9.3{{.*}}" "-target-cpu" "generic"
+
+// RUN: %clang -target armebv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-V93A %s
+// RUN: %clang -target armv9.3a -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-V93A %s
+// RUN: %clang -target armeb -march=armebv9.3a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-V93A %s
+// RUN: %clang -target armeb -march=armebv9.3-a -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-V93A %s
+// RUN: %clang -target arm -march=armebv9.3a -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-V93A %s
+// RUN: %clang -target arm -march=armebv9.3-a -mbig-endian -### -c %s 2>&1 | FileCheck -check-prefix=CHECK-BE-V93A %s
+// CHECK-BE-V93A: "-cc1"{{.*}} "-triple" "armebv9.3{{.*}}" "-target-cpu" "generic"
+
 // Once we have CPUs with optional v8.2-A FP16, we will need a way to turn it
 // on and off. Cortex-A53 is a placeholder for now.
 // RUN: %clang -target armv8a-linux-eabi -mcpu=cortex-a53+fp16 -### -c %s 2>&1 | FileCheck --check-prefix CHECK-CORTEX-A53-FP16 %s
diff --git a/clang/test/Preprocessor/arm-target-features.c b/clang/test/Preprocessor/arm-target-features.c
--- a/clang/test/Preprocessor/arm-target-features.c
+++ b/clang/test/Preprocessor/arm-target-features.c
@@ -879,6 +879,11 @@
 // CHECK-V92A: #define __ARM_ARCH_9_2A__ 1
 // CHECK-V92A: #define __ARM_ARCH_PROFILE 'A'
 
+// RUN: %clang -target armv9.3a-none-none-eabi -x c -E -dM %s -o - | FileCheck -match-full-lines --check-prefix=CHECK-V93A %s
+// CHECK-V93A: #define __ARM_ARCH 9
+// CHECK-V93A: #define __ARM_ARCH_9_3A__ 1
+// CHECK-V93A: #define __ARM_ARCH_PROFILE 'A'
+
 // RUN: %clang -target arm-none-none-eabi -march=armv7-m -mfpu=softvfp -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-SOFTVFP %s
 // CHECK-SOFTVFP-NOT: #define __ARM_FP 0x