Index: clang/test/Preprocessor/aarch64-target-features.c
===================================================================
--- clang/test/Preprocessor/aarch64-target-features.c
+++ clang/test/Preprocessor/aarch64-target-features.c
@@ -238,7 +238,7 @@
 // CHECK-MCPU-A57: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+neon" "-target-feature" "+crc" "-target-feature" "+crypto"
 // CHECK-MCPU-A72: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+neon" "-target-feature" "+crc" "-target-feature" "+crypto"
 // CHECK-MCPU-CORTEX-A73: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+neon" "-target-feature" "+crc" "-target-feature" "+crypto"
-// CHECK-MCPU-CORTEX-R82: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+v8r" "-target-feature" "+fp-armv8" "-target-feature" "+neon" "-target-feature" "+crc" "-target-feature" "+crypto" "-target-feature" "+dotprod" "-target-feature" "+fp16fml" "-target-feature" "+ras" "-target-feature" "+rdm" "-target-feature" "+rcpc" "-target-feature" "+fullfp16" "-target-feature" "+sm4" "-target-feature" "+sha3" "-target-feature" "+sha2" "-target-feature" "+aes"
+// CHECK-MCPU-CORTEX-R82: "-cc1"{{.*}} "-triple" "aarch64{{.*}}"  "-target-feature" "+v8r" "-target-feature" "+fp-armv8" "-target-feature" "+neon" "-target-feature" "+crc" "-target-feature" "+dotprod" "-target-feature" "+fp16fml" "-target-feature" "+ras" "-target-feature" "+lse" "-target-feature" "+rdm" "-target-feature" "+rcpc" "-target-feature" "+fullfp16"
 // CHECK-MCPU-M1: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+neon" "-target-feature" "+crc" "-target-feature" "+crypto"
 // CHECK-MCPU-M4: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+neon" "-target-feature" "+crc" "-target-feature" "+crypto" "-target-feature" "+dotprod" "-target-feature" "+fullfp16"
 // CHECK-MCPU-KRYO: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-feature" "+neon" "-target-feature" "+crc" "-target-feature" "+crypto"
Index: llvm/include/llvm/Support/AArch64TargetParser.def
===================================================================
--- llvm/include/llvm/Support/AArch64TargetParser.def
+++ llvm/include/llvm/Support/AArch64TargetParser.def
@@ -53,12 +53,10 @@
               AArch64::AEK_SHA2 | AArch64::AEK_AES  | AArch64::AEK_I8MM))
 AARCH64_ARCH("armv8-r", ARMV8R, "8-R", "v8r",
              ARMBuildAttrs::CPUArch::v8_R, FK_CRYPTO_NEON_FP_ARMV8,
-             (AArch64::AEK_CRC     | AArch64::AEK_RDM  | AArch64::AEK_SSBS    |
-              AArch64::AEK_CRYPTO  | AArch64::AEK_SM4  | AArch64::AEK_SHA3    |
-              AArch64::AEK_SHA2    | AArch64::AEK_AES  | AArch64::AEK_DOTPROD |
-              AArch64::AEK_FP      | AArch64::AEK_SIMD | AArch64::AEK_FP16    |
-              AArch64::AEK_FP16FML | AArch64::AEK_RAS  | AArch64::AEK_RCPC    |
-              AArch64::AEK_SB))
+             (AArch64::AEK_CRC     | AArch64::AEK_RDM  | AArch64::AEK_SSBS |
+              AArch64::AEK_DOTPROD | AArch64::AEK_FP   | AArch64::AEK_SIMD |
+              AArch64::AEK_FP16    | AArch64::AEK_FP16FML | AArch64::AEK_RAS |
+              AArch64::AEK_RCPC    | AArch64::AEK_SB))
 #undef AARCH64_ARCH
 
 #ifndef AARCH64_ARCH_EXT_NAME
@@ -139,7 +137,7 @@
                  (AArch64::AEK_FP16 | AArch64::AEK_DOTPROD | AArch64::AEK_RCPC |
                   AArch64::AEK_SSBS))
 AARCH64_CPU_NAME("cortex-r82", ARMV8R, FK_CRYPTO_NEON_FP_ARMV8, false,
-                  (AArch64::AEK_NONE))
+                 (AArch64::AEK_LSE))
 AARCH64_CPU_NAME("cortex-x1", ARMV8_2A, FK_CRYPTO_NEON_FP_ARMV8, false,
                  (AArch64::AEK_FP16 | AArch64::AEK_DOTPROD | AArch64::AEK_RCPC |
                   AArch64::AEK_SSBS))
Index: llvm/unittests/Support/TargetParserTest.cpp
===================================================================
--- llvm/unittests/Support/TargetParserTest.cpp
+++ llvm/unittests/Support/TargetParserTest.cpp
@@ -897,12 +897,11 @@
       "8.4-A"));
   EXPECT_TRUE(testAArch64CPU(
      "cortex-r82", "armv8-r", "crypto-neon-fp-armv8",
-      AArch64::AEK_CRC     | AArch64::AEK_RDM  | AArch64::AEK_SSBS    |
-      AArch64::AEK_CRYPTO  | AArch64::AEK_SM4  | AArch64::AEK_SHA3    |
-      AArch64::AEK_SHA2    | AArch64::AEK_AES  | AArch64::AEK_DOTPROD |
-      AArch64::AEK_FP      | AArch64::AEK_SIMD | AArch64::AEK_FP16    |
-      AArch64::AEK_FP16FML | AArch64::AEK_RAS  | AArch64::AEK_RCPC    |
-      AArch64::AEK_SB, "8-R"));
+      AArch64::AEK_CRC     | AArch64::AEK_RDM  | AArch64::AEK_SSBS |
+      AArch64::AEK_DOTPROD | AArch64::AEK_FP   | AArch64::AEK_SIMD |
+      AArch64::AEK_FP16    | AArch64::AEK_FP16FML | AArch64::AEK_RAS |
+      AArch64::AEK_RCPC    | AArch64::AEK_LSE  | AArch64::AEK_SB,
+      "8-R"));
   EXPECT_TRUE(testAArch64CPU(
       "cortex-x1", "armv8.2-a", "crypto-neon-fp-armv8",
       AArch64::AEK_CRC | AArch64::AEK_CRYPTO | AArch64::AEK_FP |
@@ -1103,6 +1102,12 @@
                                     AArch64::ArchKind::INVALID, "ras"));
   EXPECT_TRUE(testAArch64Extension("cortex-a55",
                                     AArch64::ArchKind::INVALID, "ras"));
+  EXPECT_TRUE(testAArch64Extension("cortex-a55",
+                                    AArch64::ArchKind::INVALID, "fp16"));
+  EXPECT_FALSE(testAArch64Extension("cortex-a55",
+                                    AArch64::ArchKind::INVALID, "fp16fml"));
+  EXPECT_TRUE(testAArch64Extension("cortex-a55",
+                                    AArch64::ArchKind::INVALID, "dotprod"));
   EXPECT_FALSE(testAArch64Extension("cortex-a57",
                                     AArch64::ArchKind::INVALID, "ras"));
   EXPECT_FALSE(testAArch64Extension("cortex-a72",
@@ -1111,6 +1116,22 @@
                                     AArch64::ArchKind::INVALID, "ras"));
   EXPECT_TRUE(testAArch64Extension("cortex-a75",
                                     AArch64::ArchKind::INVALID, "ras"));
+  EXPECT_TRUE(testAArch64Extension("cortex-a75",
+                                    AArch64::ArchKind::INVALID, "fp16"));
+  EXPECT_FALSE(testAArch64Extension("cortex-a75",
+                                    AArch64::ArchKind::INVALID, "fp16fml"));
+  EXPECT_TRUE(testAArch64Extension("cortex-a75",
+                                   AArch64::ArchKind::INVALID, "dotprod"));
+  EXPECT_TRUE(testAArch64Extension("cortex-r82",
+                                   AArch64::ArchKind::INVALID, "ras"));
+  EXPECT_TRUE(testAArch64Extension("cortex-r82",
+                                   AArch64::ArchKind::INVALID, "fp16"));
+  EXPECT_TRUE(testAArch64Extension("cortex-r82",
+                                   AArch64::ArchKind::INVALID, "fp16fml"));
+  EXPECT_TRUE(testAArch64Extension("cortex-r82",
+                                   AArch64::ArchKind::INVALID, "dotprod"));
+  EXPECT_TRUE(testAArch64Extension("cortex-r82",
+                                   AArch64::ArchKind::INVALID, "lse"));
   EXPECT_FALSE(testAArch64Extension("cyclone",
                                     AArch64::ArchKind::INVALID, "ras"));
   EXPECT_FALSE(testAArch64Extension("exynos-m3",
@@ -1153,18 +1174,6 @@
                                    AArch64::ArchKind::INVALID, "profile"));
   EXPECT_FALSE(testAArch64Extension("saphira",
                                     AArch64::ArchKind::INVALID, "fp16"));
-  EXPECT_TRUE(testAArch64Extension("cortex-a55",
-                                    AArch64::ArchKind::INVALID, "fp16"));
-  EXPECT_FALSE(testAArch64Extension("cortex-a55",
-                                    AArch64::ArchKind::INVALID, "fp16fml"));
-  EXPECT_TRUE(testAArch64Extension("cortex-a55",
-                                    AArch64::ArchKind::INVALID, "dotprod"));
-  EXPECT_TRUE(testAArch64Extension("cortex-a75",
-                                    AArch64::ArchKind::INVALID, "fp16"));
-  EXPECT_FALSE(testAArch64Extension("cortex-a75",
-                                    AArch64::ArchKind::INVALID, "fp16fml"));
-  EXPECT_TRUE(testAArch64Extension("cortex-a75",
-                                    AArch64::ArchKind::INVALID, "dotprod"));
   EXPECT_FALSE(testAArch64Extension("thunderx2t99",
                                     AArch64::ArchKind::INVALID, "ras"));
   EXPECT_FALSE(testAArch64Extension("thunderx",