diff --git a/llvm/include/llvm/Support/ARMBuildAttributes.h b/llvm/include/llvm/Support/ARMBuildAttributes.h
--- a/llvm/include/llvm/Support/ARMBuildAttributes.h
+++ b/llvm/include/llvm/Support/ARMBuildAttributes.h
@@ -90,25 +90,26 @@
 
 // Legal Values for CPU_arch, (=6), uleb128
 enum CPUArch {
-  Pre_v4   = 0,
-  v4       = 1,   // e.g. SA110
-  v4T      = 2,   // e.g. ARM7TDMI
-  v5T      = 3,   // e.g. ARM9TDMI
-  v5TE     = 4,   // e.g. ARM946E_S
-  v5TEJ    = 5,   // e.g. ARM926EJ_S
-  v6       = 6,   // e.g. ARM1136J_S
-  v6KZ     = 7,   // e.g. ARM1176JZ_S
-  v6T2     = 8,   // e.g. ARM1156T2_S
-  v6K      = 9,   // e.g. ARM1176JZ_S
-  v7       = 10,  // e.g. Cortex A8, Cortex M3
-  v6_M     = 11,  // e.g. Cortex M1
-  v6S_M    = 12,  // v6_M with the System extensions
-  v7E_M    = 13,  // v7_M with DSP extensions
-  v8_A     = 14,  // v8_A AArch32
-  v8_R     = 15,  // e.g. Cortex R52
-  v8_M_Base= 16,  // v8_M_Base AArch32
-  v8_M_Main= 17,  // v8_M_Main AArch32
-  v8_1_M_Main=21, // v8_1_M_Main AArch32
+  Pre_v4 = 0,
+  v4 = 1,           // e.g. SA110
+  v4T = 2,          // e.g. ARM7TDMI
+  v5T = 3,          // e.g. ARM9TDMI
+  v5TE = 4,         // e.g. ARM946E_S
+  v5TEJ = 5,        // e.g. ARM926EJ_S
+  v6 = 6,           // e.g. ARM1136J_S
+  v6KZ = 7,         // e.g. ARM1176JZ_S
+  v6T2 = 8,         // e.g. ARM1156T2_S
+  v6K = 9,          // e.g. ARM1176JZ_S
+  v7 = 10,          // e.g. Cortex A8, Cortex M3
+  v6_M = 11,        // e.g. Cortex M1
+  v6S_M = 12,       // v6_M with the System extensions
+  v7E_M = 13,       // v7_M with DSP extensions
+  v8_A = 14,        // v8_A AArch32
+  v8_R = 15,        // e.g. Cortex R52
+  v8_M_Base = 16,   // v8_M_Base AArch32
+  v8_M_Main = 17,   // v8_M_Main AArch32
+  v8_1_M_Main = 21, // v8_1_M_Main AArch32
+  v9_A = 22,        // v9_A AArch32
 };
 
 enum CPUArchProfile {               // (=7), uleb128
diff --git a/llvm/include/llvm/Support/ARMTargetParser.def b/llvm/include/llvm/Support/ARMTargetParser.def
--- a/llvm/include/llvm/Support/ARMTargetParser.def
+++ b/llvm/include/llvm/Support/ARMTargetParser.def
@@ -129,22 +129,22 @@
           ARM::AEK_DOTPROD | ARM::AEK_BF16 | ARM::AEK_SHA2 | ARM::AEK_AES |
           ARM::AEK_I8MM))
 ARM_ARCH("armv9-a", ARMV9A, "9-A", "v9a",
-         ARMBuildAttrs::CPUArch::v8_A, FK_NEON_FP_ARMV8,
+         ARMBuildAttrs::CPUArch::v9_A, FK_NEON_FP_ARMV8,
          (ARM::AEK_SEC | ARM::AEK_MP | ARM::AEK_VIRT | ARM::AEK_HWDIVARM |
           ARM::AEK_HWDIVTHUMB | ARM::AEK_DSP | ARM::AEK_CRC | ARM::AEK_RAS |
           ARM::AEK_DOTPROD))
 ARM_ARCH("armv9.1-a", ARMV9_1A, "9.1-A", "v9.1a",
-         ARMBuildAttrs::CPUArch::v8_A, FK_NEON_FP_ARMV8,
+         ARMBuildAttrs::CPUArch::v9_A, FK_NEON_FP_ARMV8,
          (ARM::AEK_SEC | ARM::AEK_MP | ARM::AEK_VIRT | ARM::AEK_HWDIVARM |
           ARM::AEK_HWDIVTHUMB | ARM::AEK_DSP | ARM::AEK_CRC | ARM::AEK_RAS |
           ARM::AEK_DOTPROD | ARM::AEK_BF16 | ARM::AEK_I8MM))
 ARM_ARCH("armv9.2-a", ARMV9_2A, "9.2-A", "v9.2a",
-         ARMBuildAttrs::CPUArch::v8_A, FK_NEON_FP_ARMV8,
+         ARMBuildAttrs::CPUArch::v9_A, FK_NEON_FP_ARMV8,
          (ARM::AEK_SEC | ARM::AEK_MP | ARM::AEK_VIRT | ARM::AEK_HWDIVARM |
           ARM::AEK_HWDIVTHUMB | ARM::AEK_DSP | ARM::AEK_CRC | ARM::AEK_RAS |
           ARM::AEK_DOTPROD | ARM::AEK_BF16 | ARM::AEK_I8MM))
 ARM_ARCH("armv9.3-a", ARMV9_3A, "9.3-A", "v9.3a",
-         ARMBuildAttrs::CPUArch::v8_A, FK_CRYPTO_NEON_FP_ARMV8,
+         ARMBuildAttrs::CPUArch::v9_A, FK_CRYPTO_NEON_FP_ARMV8,
          (ARM::AEK_SEC | ARM::AEK_MP | ARM::AEK_VIRT | ARM::AEK_HWDIVARM |
           ARM::AEK_HWDIVTHUMB | ARM::AEK_DSP | ARM::AEK_CRC | ARM::AEK_RAS |
           ARM::AEK_DOTPROD | ARM::AEK_BF16 | ARM::AEK_I8MM))
diff --git a/llvm/lib/Object/ELFObjectFile.cpp b/llvm/lib/Object/ELFObjectFile.cpp
--- a/llvm/lib/Object/ELFObjectFile.cpp
+++ b/llvm/lib/Object/ELFObjectFile.cpp
@@ -574,6 +574,9 @@
     case ARMBuildAttrs::v8_1_M_Main:
       Triple += "v8.1m.main";
       break;
+    case ARMBuildAttrs::v9_A:
+      Triple += "v9a";
+      break;
     }
   }
   if (!isLittleEndian())
diff --git a/llvm/lib/Support/ARMAttributeParser.cpp b/llvm/lib/Support/ARMAttributeParser.cpp
--- a/llvm/lib/Support/ARMAttributeParser.cpp
+++ b/llvm/lib/Support/ARMAttributeParser.cpp
@@ -87,7 +87,7 @@
     "ARM v6KZ", "ARM v6T2", "ARM v6K", "ARM v7", "ARM v6-M", "ARM v6S-M",
     "ARM v7E-M", "ARM v8", nullptr,
     "ARM v8-M Baseline", "ARM v8-M Mainline", nullptr, nullptr, nullptr,
-    "ARM v8.1-M Mainline"
+    "ARM v8.1-M Mainline", "ARM v9-A"
   };
   return parseStringAttribute("CPU_arch", tag, makeArrayRef(strings));
 }
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMTargetStreamer.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMTargetStreamer.cpp
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMTargetStreamer.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMTargetStreamer.cpp
@@ -122,7 +122,9 @@
   if (STI.getCPU() == "xscale")
     return ARMBuildAttrs::v5TEJ;
 
-  if (STI.hasFeature(ARM::HasV8Ops)) {
+  if (STI.hasFeature(ARM::HasV9_0aOps))
+    return ARMBuildAttrs::v9_A;
+  else if (STI.hasFeature(ARM::HasV8Ops)) {
     if (STI.hasFeature(ARM::FeatureRClass))
       return ARMBuildAttrs::v8_R;
     return ARMBuildAttrs::v8_A;
diff --git a/llvm/unittests/Support/ARMAttributeParser.cpp b/llvm/unittests/Support/ARMAttributeParser.cpp
--- a/llvm/unittests/Support/ARMAttributeParser.cpp
+++ b/llvm/unittests/Support/ARMAttributeParser.cpp
@@ -54,8 +54,8 @@
 
 TEST(ARMAttributeParser, UnknownCPU_arch) {
   static const uint8_t bytes[] = {'A', 15, 0, 0, 0, 'a', 'e', 'a', 'b',
-                                  'i', 0,  1, 7, 0, 0,   0,   6,   22};
-  testParseError(bytes, "unknown CPU_arch value: 22");
+                                  'i', 0,  1, 7, 0, 0,   0,   6,   23};
+  testParseError(bytes, "unknown CPU_arch value: 23");
 }
 
 TEST(CPUArchBuildAttr, testBuildAttr) {
@@ -99,6 +99,9 @@
                                ARMBuildAttrs::v8_M_Main));
   EXPECT_TRUE(testBuildAttr(6, 21, ARMBuildAttrs::CPU_arch,
                                ARMBuildAttrs::v8_1_M_Main));
+  EXPECT_TRUE(testBuildAttr(6, 22, ARMBuildAttrs::CPU_arch,
+                               ARMBuildAttrs::v9_A));
+
 }
 
 TEST(CPUArchProfileBuildAttr, testBuildAttr) {
diff --git a/llvm/unittests/Support/TargetParserTest.cpp b/llvm/unittests/Support/TargetParserTest.cpp
--- a/llvm/unittests/Support/TargetParserTest.cpp
+++ b/llvm/unittests/Support/TargetParserTest.cpp
@@ -513,13 +513,16 @@
                           ARMBuildAttrs::CPUArch::v8_A));
   EXPECT_TRUE(
       testARMArch("armv9-a", "generic", "v9a",
-                          ARMBuildAttrs::CPUArch::v8_A));
+                          ARMBuildAttrs::CPUArch::v9_A));
   EXPECT_TRUE(
       testARMArch("armv9.1-a", "generic", "v9.1a",
-                          ARMBuildAttrs::CPUArch::v8_A));
+                          ARMBuildAttrs::CPUArch::v9_A));
   EXPECT_TRUE(
       testARMArch("armv9.2-a", "generic", "v9.2a",
-                          ARMBuildAttrs::CPUArch::v8_A));
+                          ARMBuildAttrs::CPUArch::v9_A));
+  EXPECT_TRUE(
+      testARMArch("armv9.3-a", "generic", "v9.3a",
+                          ARMBuildAttrs::CPUArch::v9_A));
   EXPECT_TRUE(
       testARMArch("armv8-r", "cortex-r52", "v8r",
                           ARMBuildAttrs::CPUArch::v8_R));