--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/llvm/test/CodeGen/AMDGPU/global-smrd-unknown.ll	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,20 @@
+; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=fiji  -memdep-block-scan-limit=1 -amdgpu-scalarize-global-loads -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN %s
+
+; GCN-LABEL: {{^}}unknown_memdep_analysis:
+; GCN: flat_load_dword
+; GCN: flat_load_dword
+; GCN: flat_store_dword
+define amdgpu_kernel void @unknown_memdep_analysis(float addrspace(1)* nocapture readonly %arg, float %arg1) #0 {
+bb:
+  %tmp53 = load float, float addrspace(1)* undef, align 4
+  %tmp54 = getelementptr inbounds float, float addrspace(1)* %arg, i32 31
+  %tmp55 = load float, float addrspace(1)* %tmp54, align 4
+  %tmp56 = tail call float @llvm.fmuladd.f32(float %arg1, float %tmp53, float %tmp55)
+  store float %tmp56, float addrspace(1)* undef, align 4
+  ret void
+}
+
+declare float @llvm.fmuladd.f32(float, float, float) #1
+
+attributes #0 = { nounwind }
+attributes #1 = { nounwind readnone speculatable }