; RUN: llc -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV ;; This test checks that the backend is capable to correctly translate ;; barrier OpenCL C 1.2 built-in function [1] into corresponding SPIR-V ;; instruction. ;; FIXME: Strictly speaking, this flag is not supported by barrier in OpenCL 1.2 ;; #define CLK_IMAGE_MEM_FENCE 0x04 ;; ;; void __attribute__((overloadable)) __attribute__((convergent)) barrier(cl_mem_fence_flags); ;; ;; __kernel void test_barrier_const_flags() { ;; barrier(CLK_LOCAL_MEM_FENCE); ;; barrier(CLK_GLOBAL_MEM_FENCE); ;; barrier(CLK_IMAGE_MEM_FENCE); ;; ;; barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE); ;; barrier(CLK_LOCAL_MEM_FENCE | CLK_IMAGE_MEM_FENCE); ;; barrier(CLK_GLOBAL_MEM_FENCE | CLK_LOCAL_MEM_FENCE | CLK_IMAGE_MEM_FENCE); ;; } ;; ;; __kernel void test_barrier_non_const_flags(cl_mem_fence_flags flags) { ;; FIXME: OpenCL spec doesn't require flags to be compile-time known ;; barrier(flags); ;; } ; CHECK-SPIRV: OpName %[[#TEST_CONST_FLAGS:]] "test_barrier_const_flags" ; CHECK-SPIRV: %[[#UINT:]] = OpTypeInt 32 0 ;; In SPIR-V, barrier is represented as OpControlBarrier [3] and OpenCL ;; cl_mem_fence_flags are represented as part of Memory Semantics [2], which ;; also includes memory order constraints. The backend applies some default ;; memory order for OpControlBarrier and therefore, constants below include a ;; bit more information than original source ;; 0x10 SequentiallyConsistent + 0x100 WorkgroupMemory ; CHECK-SPIRV: %[[#LOCAL:]] = OpConstant %[[#UINT]] 272 ;; 0x2 Workgroup ; CHECK-SPIRV: %[[#WG:]] = OpConstant %[[#UINT]] 2 ;; 0x10 SequentiallyConsistent + 0x200 CrossWorkgroupMemory ; CHECK-SPIRV-DAG: %[[#GLOBAL:]] = OpConstant %[[#UINT]] 528 ;; 0x10 SequentiallyConsistent + 0x800 ImageMemory ; CHECK-SPIRV-DAG: %[[#IMAGE:]] = OpConstant %[[#UINT]] 2064 ;; 0x10 SequentiallyConsistent + 0x100 WorkgroupMemory + 0x200 CrossWorkgroupMemory ; CHECK-SPIRV-DAG: %[[#LOCAL_GLOBAL:]] = OpConstant %[[#UINT]] 784 ;; 0x10 SequentiallyConsistent + 0x100 WorkgroupMemory + 0x800 ImageMemory ; CHECK-SPIRV-DAG: %[[#LOCAL_IMAGE:]] = OpConstant %[[#UINT]] 2320 ;; 0x10 SequentiallyConsistent + 0x100 WorkgroupMemory + 0x200 CrossWorkgroupMemory + 0x800 ImageMemory ; CHECK-SPIRV-DAG: %[[#LOCAL_GLOBAL_IMAGE:]] = OpConstant %[[#UINT]] 2832 ; CHECK-SPIRV: %[[#TEST_CONST_FLAGS]] = OpFunction %[[#]] ; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#LOCAL]] ; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#GLOBAL]] ; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#IMAGE]] ; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#LOCAL_GLOBAL]] ; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#LOCAL_IMAGE]] ; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#LOCAL_GLOBAL_IMAGE]] define dso_local spir_kernel void @test_barrier_const_flags() local_unnamed_addr { entry: tail call spir_func void @_Z7barrierj(i32 noundef 1) tail call spir_func void @_Z7barrierj(i32 noundef 2) tail call spir_func void @_Z7barrierj(i32 noundef 4) tail call spir_func void @_Z7barrierj(i32 noundef 3) tail call spir_func void @_Z7barrierj(i32 noundef 5) tail call spir_func void @_Z7barrierj(i32 noundef 7) ret void } declare spir_func void @_Z7barrierj(i32 noundef) local_unnamed_addr define dso_local spir_kernel void @test_barrier_non_const_flags(i32 noundef %flags) local_unnamed_addr { entry: ret void } ;; References: ;; [1]: https://www.khronos.org/registry/OpenCL/sdk/1.2/docs/man/xhtml/barrier.html ;; [2]: https://www.khronos.org/registry/spir-v/specs/unified1/SPIRV.html#_a_id_memory_semantics__id_a_memory_semantics_lt_id_gt ;; [3]: https://www.khronos.org/registry/spir-v/specs/unified1/SPIRV.html#OpControlBarrier