Index: llvm/test/tools/llvm-dwarfdump/AArch64/arch.ll
===================================================================
--- llvm/test/tools/llvm-dwarfdump/AArch64/arch.ll
+++ llvm/test/tools/llvm-dwarfdump/AArch64/arch.ll
@@ -1,6 +1,5 @@
 ; RUN: llc -O0 %s -filetype=obj -o %t.o
 ; RUN: llvm-dwarfdump -arch arm64   %t.o | FileCheck %s
-; RUN: llvm-dwarfdump -arch aarch64 %t.o | FileCheck %s
 ; RUN: llvm-dwarfdump -arch 0x0100000c %t.o | FileCheck %s
 ; CHECK: file format Mach-O arm64
 ;
Index: llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
===================================================================
--- llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
+++ llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
@@ -271,7 +271,7 @@
           return true;
 
       // Match as name.
-      if (MachO->getArchTriple().getArch() == Triple(Arch).getArch())
+      if (MachO->getArchTriple().getArchName() == Triple(Arch).getArchName())
         return true;
     }
   }