1; RUN: llc -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV 2; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv32-unknown-unknown %s -o - -filetype=obj | spirv-val %} 3 4;; This test checks that the backend is capable to correctly translate 5;; barrier OpenCL C 1.2 built-in function [1] into corresponding SPIR-V 6;; instruction. 7 8;; FIXME: Strictly speaking, this flag is not supported by barrier in OpenCL 1.2 9;; #define CLK_IMAGE_MEM_FENCE 0x04 10;; 11;; void __attribute__((overloadable)) __attribute__((convergent)) barrier(cl_mem_fence_flags); 12;; 13;; __kernel void test_barrier_const_flags() { 14;; barrier(CLK_LOCAL_MEM_FENCE); 15;; barrier(CLK_GLOBAL_MEM_FENCE); 16;; barrier(CLK_IMAGE_MEM_FENCE); 17;; 18;; barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE); 19;; barrier(CLK_LOCAL_MEM_FENCE | CLK_IMAGE_MEM_FENCE); 20;; barrier(CLK_GLOBAL_MEM_FENCE | CLK_LOCAL_MEM_FENCE | CLK_IMAGE_MEM_FENCE); 21;; } 22;; 23;; __kernel void test_barrier_non_const_flags(cl_mem_fence_flags flags) { 24 ;; FIXME: OpenCL spec doesn't require flags to be compile-time known 25 ;; barrier(flags); 26;; } 27 28; CHECK-SPIRV: OpName %[[#TEST_CONST_FLAGS:]] "test_barrier_const_flags" 29; CHECK-SPIRV: %[[#UINT:]] = OpTypeInt 32 0 30 31;; In SPIR-V, barrier is represented as OpControlBarrier [3] and OpenCL 32;; cl_mem_fence_flags are represented as part of Memory Semantics [2], which 33;; also includes memory order constraints. The backend applies some default 34;; memory order for OpControlBarrier and therefore, constants below include a 35;; bit more information than original source 36 37;; 0x10 SequentiallyConsistent + 0x100 WorkgroupMemory 38; CHECK-SPIRV: %[[#LOCAL:]] = OpConstant %[[#UINT]] 272 39;; 0x2 Workgroup 40; CHECK-SPIRV: %[[#WG:]] = OpConstant %[[#UINT]] 2 41;; 0x10 SequentiallyConsistent + 0x200 CrossWorkgroupMemory 42; CHECK-SPIRV-DAG: %[[#GLOBAL:]] = OpConstant %[[#UINT]] 528 43;; 0x10 SequentiallyConsistent + 0x800 ImageMemory 44; CHECK-SPIRV-DAG: %[[#IMAGE:]] = OpConstant %[[#UINT]] 2064 45;; 0x10 SequentiallyConsistent + 0x100 WorkgroupMemory + 0x200 CrossWorkgroupMemory 46; CHECK-SPIRV-DAG: %[[#LOCAL_GLOBAL:]] = OpConstant %[[#UINT]] 784 47;; 0x10 SequentiallyConsistent + 0x100 WorkgroupMemory + 0x800 ImageMemory 48; CHECK-SPIRV-DAG: %[[#LOCAL_IMAGE:]] = OpConstant %[[#UINT]] 2320 49;; 0x10 SequentiallyConsistent + 0x100 WorkgroupMemory + 0x200 CrossWorkgroupMemory + 0x800 ImageMemory 50; CHECK-SPIRV-DAG: %[[#LOCAL_GLOBAL_IMAGE:]] = OpConstant %[[#UINT]] 2832 51 52; CHECK-SPIRV: %[[#TEST_CONST_FLAGS]] = OpFunction %[[#]] 53; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#LOCAL]] 54; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#GLOBAL]] 55; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#IMAGE]] 56; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#LOCAL_GLOBAL]] 57; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#LOCAL_IMAGE]] 58; CHECK-SPIRV: OpControlBarrier %[[#WG]] %[[#WG]] %[[#LOCAL_GLOBAL_IMAGE]] 59 60define dso_local spir_kernel void @test_barrier_const_flags() local_unnamed_addr { 61entry: 62 tail call spir_func void @_Z7barrierj(i32 noundef 1) 63 tail call spir_func void @_Z7barrierj(i32 noundef 2) 64 tail call spir_func void @_Z7barrierj(i32 noundef 4) 65 tail call spir_func void @_Z7barrierj(i32 noundef 3) 66 tail call spir_func void @_Z7barrierj(i32 noundef 5) 67 tail call spir_func void @_Z7barrierj(i32 noundef 7) 68 ret void 69} 70 71declare spir_func void @_Z7barrierj(i32 noundef) local_unnamed_addr 72 73define dso_local spir_kernel void @test_barrier_non_const_flags(i32 noundef %flags) local_unnamed_addr { 74entry: 75 ret void 76} 77 78;; References: 79;; [1]: https://www.khronos.org/registry/OpenCL/sdk/1.2/docs/man/xhtml/barrier.html 80;; [2]: https://www.khronos.org/registry/spir-v/specs/unified1/SPIRV.html#_a_id_memory_semantics__id_a_memory_semantics_lt_id_gt 81;; [3]: https://www.khronos.org/registry/spir-v/specs/unified1/SPIRV.html#OpControlBarrier 82