1 files changed, 53 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/dpp_combine.ll b/llvm/test/CodeGen/AMDGPU/dpp_combine.ll
new file mode 100644
index 00000000000..2afc5388872
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/dpp_combine.ll
@@ -0,0 +1,53 @@
+; RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck %s -check-prefix=GCN
+; RUN: llc -march=amdgcn -mcpu=gfx1010 -verify-machineinstrs < %s | FileCheck %s -check-prefix=GCN
+
+; GCN-LABEL: {{^}}dpp_add:
+; GCN: global_load_dword [[V:v[0-9]+]],
+; GCN: v_add_{{(nc_)?}}u32_dpp [[V]], [[V]], [[V]] quad_perm:[1,0,0,0] row_mask:0xf bank_mask:0xf bound_ctrl:0{{$}}
+define amdgpu_kernel void @dpp_add(i32 addrspace(1)* %arg) {
+  %id = tail call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr inbounds i32, i32 addrspace(1)* %arg, i32 %id
+  %load = load i32, i32 addrspace(1)* %gep
+  %tmp0 = call i32 @llvm.amdgcn.update.dpp.i32(i32 %load, i32 %load, i32 1, i32 15, i32 15, i1 1) #0
+  %add = add i32 %tmp0, %load
+  store i32 %add, i32 addrspace(1)* %gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}dpp_ceil:
+; GCN: global_load_dword [[V:v[0-9]+]],
+; GCN: v_ceil_f32_dpp [[V]], [[V]] quad_perm:[1,0,0,0] row_mask:0xf bank_mask:0xf bound_ctrl:0{{$}}
+define amdgpu_kernel void @dpp_ceil(i32 addrspace(1)* %arg) {
+  %id = tail call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr inbounds i32, i32 addrspace(1)* %arg, i32 %id
+  %load = load i32, i32 addrspace(1)* %gep
+  %tmp0 = call i32 @llvm.amdgcn.update.dpp.i32(i32 %load, i32 %load, i32 1, i32 15, i32 15, i1 1) #0
+  %tmp1 = bitcast i32 %tmp0 to float
+  %round = tail call float @llvm.ceil.f32(float %tmp1)
+  %tmp2 = bitcast float %round to i32
+  store i32 %tmp2, i32 addrspace(1)* %gep
+  ret void
+}
+
+; GCN-LABEL: {{^}}dpp_fadd:
+; GCN: global_load_dword [[V:v[0-9]+]],
+; GCN: v_add_f32_dpp [[V]], [[V]], [[V]] quad_perm:[1,0,0,0] row_mask:0xf bank_mask:0xf bound_ctrl:0{{$}}
+define amdgpu_kernel void @dpp_fadd(i32 addrspace(1)* %arg) {
+  %id = tail call i32 @llvm.amdgcn.workitem.id.x()
+  %gep = getelementptr inbounds i32, i32 addrspace(1)* %arg, i32 %id
+  %load = load i32, i32 addrspace(1)* %gep
+  %tmp0 = call i32 @llvm.amdgcn.update.dpp.i32(i32 %load, i32 %load, i32 1, i32 15, i32 15, i1 1) #0
+  %tmp1 = bitcast i32 %tmp0 to float
+  %t = bitcast i32 %load to float
+  %add = fadd float %tmp1, %t
+  %tmp2 = bitcast float %add to i32
+  store i32 %tmp2, i32 addrspace(1)* %gep
+  ret void
+}
+
+
+declare i32 @llvm.amdgcn.workitem.id.x()
+declare i32 @llvm.amdgcn.update.dpp.i32(i32, i32, i32, i32, i32, i1) #0
+declare float @llvm.ceil.f32(float)
+
+attributes #0 = { nounwind readnone convergent }