| ; RUN: llc -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV |
| ; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv32-unknown-unknown %s -o - -filetype=obj | spirv-val %} |
| |
| ;; This test checks that the backend is capable to correctly translate |
| ;; legacy atomic OpenCL C 1.2 built-in functions [1] into corresponding SPIR-V |
| ;; instruction. |
| |
| ;; __kernel void test_legacy_atomics(__global int *p, int val) { |
| ;; atom_add(p, val); // from cl_khr_global_int32_base_atomics |
| ;; atomic_add(p, val); // from OpenCL C 1.1 |
| ;; } |
| |
| ; CHECK-SPIRV: OpName %[[#TEST:]] "test_legacy_atomics" |
| ; CHECK-SPIRV-DAG: %[[#UINT:]] = OpTypeInt 32 0 |
| ; CHECK-SPIRV-DAG: %[[#UINT_PTR:]] = OpTypePointer CrossWorkgroup %[[#UINT]] |
| |
| ;; In SPIR-V, atomic_add is represented as OpAtomicIAdd [2], which also includes |
| ;; memory scope and memory semantic arguments. The backend applies a default |
| ;; memory scope and memory order for it and therefore, constants below include |
| ;; a bit more information than original source |
| |
| ;; 0x2 Workgroup |
| ; CHECK-SPIRV-DAG: %[[#WORKGROUP_SCOPE:]] = OpConstant %[[#UINT]] 2{{$}} |
| |
| ;; 0x0 Relaxed |
| ; CHECK-SPIRV-DAG: %[[#RELAXED:]] = OpConstantNull %[[#UINT]] |
| |
| ; CHECK-SPIRV: %[[#TEST]] = OpFunction %[[#]] |
| ; CHECK-SPIRV: %[[#PTR:]] = OpFunctionParameter %[[#UINT_PTR]] |
| ; CHECK-SPIRV: %[[#VAL:]] = OpFunctionParameter %[[#UINT]] |
| ; CHECK-SPIRV: %[[#]] = OpAtomicIAdd %[[#UINT]] %[[#PTR]] %[[#WORKGROUP_SCOPE]] %[[#RELAXED]] %[[#VAL]] |
| ; CHECK-SPIRV: %[[#]] = OpAtomicIAdd %[[#UINT]] %[[#PTR]] %[[#WORKGROUP_SCOPE]] %[[#RELAXED]] %[[#VAL]] |
| |
| define dso_local spir_kernel void @test_legacy_atomics(i32 addrspace(1)* noundef %p, i32 noundef %val) local_unnamed_addr { |
| entry: |
| %call = tail call spir_func i32 @_Z8atom_addPU3AS1Vii(i32 addrspace(1)* noundef %p, i32 noundef %val) |
| %call1 = tail call spir_func i32 @_Z10atomic_addPU3AS1Vii(i32 addrspace(1)* noundef %p, i32 noundef %val) |
| ret void |
| } |
| |
| declare spir_func i32 @_Z8atom_addPU3AS1Vii(i32 addrspace(1)* noundef, i32 noundef) local_unnamed_addr |
| |
| declare spir_func i32 @_Z10atomic_addPU3AS1Vii(i32 addrspace(1)* noundef, i32 noundef) local_unnamed_addr |
| |
| ;; References: |
| ;; [1]: https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_C.html#atomic-legacy |
| ;; [2]: https://www.khronos.org/registry/spir-v/specs/unified1/SPIRV.html#OpAtomicIAdd |