diff --git a/llvm/test/CodeGen/AMDGPU/fastregalloc-sgpr-only.mir b/llvm/test/CodeGen/AMDGPU/fastregalloc-sgpr-only.mir
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/fastregalloc-sgpr-only.mir
@@ -0,0 +1,32 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -start-before=regallocfast,0 --stop-after=regallocfast,0 -o - %s | FileCheck -check-prefix=GCN %s
+
+---
+name: copy_vgpr_allocation
+tracksRegLiveness: true
+body:             |
+  bb.0:
+    liveins: $vgpr0, $vgpr1, $vgpr4, $vgpr5
+    ; GCN-LABEL: name: copy_vgpr_allocation
+    ; GCN: liveins: $vgpr0, $vgpr1, $vgpr4, $vgpr5
+    ; GCN-NEXT: {{  $}}
+    ; GCN-NEXT: [[COPY:%[0-9]+]]:vreg_64 = COPY killed $vgpr0_vgpr1
+    ; GCN-NEXT: FLAT_STORE_DWORDX2 killed $vgpr4_vgpr5, [[COPY]], 0, 0, implicit $exec, implicit $flat_scr
+    %14:vreg_64 = COPY $vgpr0_vgpr1
+    FLAT_STORE_DWORDX2 $vgpr4_vgpr5, %14:vreg_64, 0, 0, implicit $exec, implicit $flat_scr
+...
+
+
+---
+name: copy_sgpr_allocation
+tracksRegLiveness: true
+body:             |
+  bb.0:
+    liveins: $sgpr0, $sgpr1, $sgpr4
+    ; GCN-LABEL: name: copy_sgpr_allocation
+    ; GCN: liveins: $sgpr0, $sgpr1, $sgpr4
+    ; GCN-NEXT: {{  $}}
+    ; GCN-NEXT: S_STORE_DWORD_SGPR killed $sgpr4, killed renamable $sgpr0_sgpr1, undef $m0, 0
+    %14:sreg_64 = COPY $sgpr0_sgpr1
+    S_STORE_DWORD_SGPR $sgpr4, %14:sreg_64, undef $m0, 0
+...