diff --git a/clang/lib/Driver/ToolChains/Arch/RISCV.cpp b/clang/lib/Driver/ToolChains/Arch/RISCV.cpp
--- a/clang/lib/Driver/ToolChains/Arch/RISCV.cpp
+++ b/clang/lib/Driver/ToolChains/Arch/RISCV.cpp
@@ -258,10 +258,13 @@
         << MArch << Error << Ext;
       return;
     }
-    if (Ext == "zvamo" || Ext == "zvlsseg") {
+    if (Ext == "zvlsseg") {
+      Features.push_back("+experimental-v");
+      Features.push_back("+experimental-zvlsseg");
+    } else if (Ext == "zvamo") {
       Features.push_back("+experimental-v");
-      Features.push_back("+experimental-zvamo");
       Features.push_back("+experimental-zvlsseg");
+      Features.push_back("+experimental-zvamo");
     } else if (isExperimentalExtension(Ext))
       Features.push_back(Args.MakeArgString("+experimental-" + Ext));
     else
@@ -429,7 +432,6 @@
       break;
     case 'v':
       Features.push_back("+experimental-v");
-      Features.push_back("+experimental-zvamo");
       Features.push_back("+experimental-zvlsseg");
       break;
     }
diff --git a/clang/test/Preprocessor/riscv-target-features.c b/clang/test/Preprocessor/riscv-target-features.c
--- a/clang/test/Preprocessor/riscv-target-features.c
+++ b/clang/test/Preprocessor/riscv-target-features.c
@@ -225,12 +225,6 @@
 // RUN: -march=rv64iv0p10 -x c -E -dM %s \
 // RUN: -o - | FileCheck --check-prefix=CHECK-V-EXT %s
 // RUN: %clang -target riscv32-unknown-linux-gnu -menable-experimental-extensions \
-// RUN: -march=rv32izvamo0p10 -x c -E -dM %s \
-// RUN: -o - | FileCheck --check-prefix=CHECK-V-EXT %s
-// RUN: %clang -target riscv64-unknown-linux-gnu -menable-experimental-extensions \
-// RUN: -march=rv32izvamo0p10 -x c -E -dM %s \
-// RUN: -o - | FileCheck --check-prefix=CHECK-V-EXT %s
-// RUN: %clang -target riscv32-unknown-linux-gnu -menable-experimental-extensions \
 // RUN: -march=rv32izvlsseg0p10 -x c -E -dM %s \
 // RUN: -o - | FileCheck --check-prefix=CHECK-V-EXT %s
 // RUN: %clang -target riscv64-unknown-linux-gnu -menable-experimental-extensions \
@@ -238,9 +232,19 @@
 // RUN: -o - | FileCheck --check-prefix=CHECK-V-EXT %s
 // CHECK-V-EXT: __riscv_v 10000
 // CHECK-V-EXT: __riscv_vector 1
-// CHECK-V-EXT: __riscv_zvamo 10000
 // CHECK-V-EXT: __riscv_zvlsseg 10000
 
+// RUN: %clang -target riscv32-unknown-linux-gnu -menable-experimental-extensions \
+// RUN: -march=rv32izvamo0p10 -x c -E -dM %s \
+// RUN: -o - | FileCheck --check-prefix=CHECK-ZVAMO-EXT %s
+// RUN: %clang -target riscv64-unknown-linux-gnu -menable-experimental-extensions \
+// RUN: -march=rv32izvamo0p10 -x c -E -dM %s \
+// RUN: -o - | FileCheck --check-prefix=CHECK-ZVAMO-EXT %s
+// CHECK-ZVAMO-EXT: __riscv_v 10000
+// CHECK-ZVAMO-EXT: __riscv_vector 1
+// CHECK-ZVAMO-EXT: __riscv_zvamo 10000
+// CHECK-ZVAMO-EXT: __riscv_zvlsseg 10000
+
 // RUN: %clang -target riscv32-unknown-linux-gnu -menable-experimental-extensions \
 // RUN: -march=rv32izfh0p1 -x c -E -dM %s \
 // RUN: -o - | FileCheck --check-prefix=CHECK-ZFH-EXT %s