diff --git a/llvm/test/tools/llvm-objdump/ELF/AMDGPU/subtarget.ll b/llvm/test/tools/llvm-objdump/ELF/AMDGPU/subtarget.ll
--- a/llvm/test/tools/llvm-objdump/ELF/AMDGPU/subtarget.ll
+++ b/llvm/test/tools/llvm-objdump/ELF/AMDGPU/subtarget.ll
@@ -44,6 +44,16 @@
 
 ; ----------------------------------GFX9---------------------------------------
 ;
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90c -filetype=obj -O0 -o %t.o %s
+; RUN: llvm-objdump -D --arch-name=amdgcn --mcpu=gfx90c %t.o > %t-specify.txt
+; RUN: llvm-objdump -D %t.o > %t-detect.txt
+; RUN: diff %t-specify.txt %t-detect.txt
+
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -filetype=obj -O0 -o %t.o %s
+; RUN: llvm-objdump -D --arch-name=amdgcn --mcpu=gfx90a %t.o > %t-specify.txt
+; RUN: llvm-objdump -D %t.o > %t-detect.txt
+; RUN: diff %t-specify.txt %t-detect.txt
+
 ; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx909 -filetype=obj -O0 -o %t.o %s
 ; RUN: llvm-objdump -D --arch-name=amdgcn --mcpu=gfx909 %t.o > %t-specify.txt
 ; RUN: llvm-objdump -D %t.o > %t-detect.txt