| ; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s |
| |
| ; GCN-LABEL: {{^}}load_idx_idy: |
| ; GCN-NOT: global_load |
| ; GCN: s_load_dword [[ID_XY:s[0-9]+]], s[4:5], 0x4 |
| ; GCN-NOT: global_load |
| ; GCN: s_lshr_b32 [[ID_Y:s[0-9]+]], [[ID_XY]], 16 |
| ; GCN: s_add_i32 [[ID_SUM:s[0-9]+]], [[ID_Y]], [[ID_XY]] |
| ; GCN: s_and_b32 s{{[0-9]+}}, [[ID_SUM]], 0xffff |
| define protected amdgpu_kernel void @load_idx_idy(i32 addrspace(1)* %out) { |
| entry: |
| %disp = tail call align 4 dereferenceable(64) i8 addrspace(4)* @llvm.amdgcn.dispatch.ptr() |
| %gep_x = getelementptr i8, i8 addrspace(4)* %disp, i64 4 |
| %gep_x.cast = bitcast i8 addrspace(4)* %gep_x to i16 addrspace(4)* |
| %id_x = load i16, i16 addrspace(4)* %gep_x.cast, align 4, !invariant.load !0 ; load workgroup size x |
| %gep_y = getelementptr i8, i8 addrspace(4)* %disp, i64 6 |
| %gep_y.cast = bitcast i8 addrspace(4)* %gep_y to i16 addrspace(4)* |
| %id_y = load i16, i16 addrspace(4)* %gep_y.cast, align 2, !invariant.load !0 ; load workgroup size y |
| %add = add nuw nsw i16 %id_y, %id_x |
| %conv = zext i16 %add to i32 |
| store i32 %conv, i32 addrspace(1)* %out, align 4 |
| ret void |
| } |
| |
| ; A little more complicated case where more sub-dword loads could be coalesced |
| ; if they are not widening earlier. |
| ; GCN-LABEL: {{^}}load_4i16: |
| ; GCN: s_load_dwordx2 s{{\[}}[[D0:[0-9]+]]:[[D1:[0-9]+]]{{\]}}, s[4:5], 0x4 |
| ; GCN-NOT: s_load_dword {{s[0-9]+}}, s[4:5], 0x4 |
| ; GCN-DAG: s_lshr_b32 s{{[0-9]+}}, s[[D0]], 16 |
| ; GCN-DAG: s_lshr_b32 s{{[0-9]+}}, s[[D1]], 16 |
| ; GCN: s_endpgm |
| define protected amdgpu_kernel void @load_4i16(i32 addrspace(1)* %out) { |
| entry: |
| %disp = tail call align 4 dereferenceable(64) i8 addrspace(4)* @llvm.amdgcn.dispatch.ptr() |
| %gep_x = getelementptr i8, i8 addrspace(4)* %disp, i64 4 |
| %gep_x.cast = bitcast i8 addrspace(4)* %gep_x to i16 addrspace(4)* |
| %id_x = load i16, i16 addrspace(4)* %gep_x.cast, align 4, !invariant.load !0 ; load workgroup size x |
| %gep_y = getelementptr i8, i8 addrspace(4)* %disp, i64 6 |
| %gep_y.cast = bitcast i8 addrspace(4)* %gep_y to i16 addrspace(4)* |
| %id_y = load i16, i16 addrspace(4)* %gep_y.cast, align 2, !invariant.load !0 ; load workgroup size y |
| %gep_z = getelementptr i8, i8 addrspace(4)* %disp, i64 8 |
| %gep_z.cast = bitcast i8 addrspace(4)* %gep_z to i16 addrspace(4)* |
| %id_z = load i16, i16 addrspace(4)* %gep_z.cast, align 4, !invariant.load !0 ; load workgroup size x |
| %gep_w = getelementptr i8, i8 addrspace(4)* %disp, i64 10 |
| %gep_w.cast = bitcast i8 addrspace(4)* %gep_w to i16 addrspace(4)* |
| %id_w = load i16, i16 addrspace(4)* %gep_w.cast, align 2, !invariant.load !0 ; load workgroup size y |
| %add = add nuw nsw i16 %id_y, %id_x |
| %add2 = add nuw nsw i16 %id_z, %id_w |
| %add3 = add nuw nsw i16 %add, %add2 |
| %conv = zext i16 %add3 to i32 |
| store i32 %conv, i32 addrspace(1)* %out, align 4 |
| ret void |
| } |
| |
| declare i8 addrspace(4)* @llvm.amdgcn.dispatch.ptr() |
| |
| !0 = !{!0} |