Index: clang/lib/Driver/ToolChains/Arch/RISCV.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Arch/RISCV.cpp
+++ clang/lib/Driver/ToolChains/Arch/RISCV.cpp
@@ -309,6 +309,8 @@
   } else {
     if (Triple.getOS() == llvm::Triple::UnknownOS)
       return "rv64imac";
+    else if (Triple.isAndroid())
+      return "rv64imafdc_zbb";
     else
       return "rv64imafdc";
   }
Index: clang/test/Driver/riscv-features.c
===================================================================
--- clang/test/Driver/riscv-features.c
+++ clang/test/Driver/riscv-features.c
@@ -1,5 +1,6 @@
 // RUN: %clang --target=riscv32-unknown-elf -### %s -fsyntax-only 2>&1 | FileCheck %s
 // RUN: %clang --target=riscv64-unknown-elf -### %s -fsyntax-only 2>&1 | FileCheck %s
+// RUN: %clang --target=riscv64-linux-android -### %s -fsyntax-only 2>&1 | FileCheck %s -check-prefixes=ANDROID,DEFAULT
 
 // CHECK: fno-signed-char
 
@@ -8,6 +9,7 @@
 // RUN: %clang --target=riscv32-unknown-elf -### %s -mrelax 2>&1 | FileCheck %s -check-prefix=RELAX
 // RUN: %clang --target=riscv32-unknown-elf -### %s -mno-relax 2>&1 | FileCheck %s -check-prefix=NO-RELAX
 
+// ANDROID: "-target-feature" "+zbb"
 // RELAX: "-target-feature" "+relax"
 // NO-RELAX: "-target-feature" "-relax"
 // DEFAULT: "-target-feature" "+relax"