| // Copyright (c) 2018 Google LLC. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "source/val/validate_memory_semantics.h" |
| |
| #include "source/diagnostic.h" |
| #include "source/spirv_target_env.h" |
| #include "source/util/bitutils.h" |
| #include "source/val/instruction.h" |
| #include "source/val/validation_state.h" |
| |
| namespace spvtools { |
| namespace val { |
| |
| spv_result_t ValidateMemorySemantics(ValidationState_t& _, |
| const Instruction* inst, |
| uint32_t operand_index) { |
| const SpvOp opcode = inst->opcode(); |
| const auto id = inst->GetOperandAs<const uint32_t>(operand_index); |
| bool is_int32 = false, is_const_int32 = false; |
| uint32_t value = 0; |
| std::tie(is_int32, is_const_int32, value) = _.EvalInt32IfConst(id); |
| |
| if (!is_int32) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": expected Memory Semantics to be a 32-bit int"; |
| } |
| |
| if (!is_const_int32) { |
| if (_.HasCapability(SpvCapabilityShader) && |
| !_.HasCapability(SpvCapabilityCooperativeMatrixNV)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << "Memory Semantics ids must be OpConstant when Shader " |
| "capability is present"; |
| } |
| |
| if (_.HasCapability(SpvCapabilityShader) && |
| _.HasCapability(SpvCapabilityCooperativeMatrixNV) && |
| !spvOpcodeIsConstant(_.GetIdOpcode(id))) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << "Memory Semantics must be a constant instruction when " |
| "CooperativeMatrixNV capability is present"; |
| } |
| return SPV_SUCCESS; |
| } |
| |
| const size_t num_memory_order_set_bits = spvtools::utils::CountSetBits( |
| value & (SpvMemorySemanticsAcquireMask | SpvMemorySemanticsReleaseMask | |
| SpvMemorySemanticsAcquireReleaseMask | |
| SpvMemorySemanticsSequentiallyConsistentMask)); |
| |
| if (num_memory_order_set_bits > 1) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": Memory Semantics can have at most one of the following " |
| "bits " |
| "set: Acquire, Release, AcquireRelease or " |
| "SequentiallyConsistent"; |
| } |
| |
| if (_.memory_model() == SpvMemoryModelVulkanKHR && |
| value & SpvMemorySemanticsSequentiallyConsistentMask) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << "SequentiallyConsistent memory " |
| "semantics cannot be used with " |
| "the VulkanKHR memory model."; |
| } |
| |
| if (value & SpvMemorySemanticsMakeAvailableKHRMask && |
| !_.HasCapability(SpvCapabilityVulkanMemoryModelKHR)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": Memory Semantics MakeAvailableKHR requires capability " |
| << "VulkanMemoryModelKHR"; |
| } |
| |
| if (value & SpvMemorySemanticsMakeVisibleKHRMask && |
| !_.HasCapability(SpvCapabilityVulkanMemoryModelKHR)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": Memory Semantics MakeVisibleKHR requires capability " |
| << "VulkanMemoryModelKHR"; |
| } |
| |
| if (value & SpvMemorySemanticsOutputMemoryKHRMask && |
| !_.HasCapability(SpvCapabilityVulkanMemoryModelKHR)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": Memory Semantics OutputMemoryKHR requires capability " |
| << "VulkanMemoryModelKHR"; |
| } |
| |
| if (value & SpvMemorySemanticsVolatileMask) { |
| if (!_.HasCapability(SpvCapabilityVulkanMemoryModelKHR)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": Memory Semantics Volatile requires capability " |
| "VulkanMemoryModelKHR"; |
| } |
| |
| if (!spvOpcodeIsAtomicOp(inst->opcode())) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << "Memory Semantics Volatile can only be used with atomic " |
| "instructions"; |
| } |
| } |
| |
| if (value & SpvMemorySemanticsUniformMemoryMask && |
| !_.HasCapability(SpvCapabilityShader)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": Memory Semantics UniformMemory requires capability Shader"; |
| } |
| |
| // Checking for SpvCapabilityAtomicStorage is intentionally not done here. See |
| // https://github.com/KhronosGroup/glslang/issues/1618 for the reasoning why. |
| |
| if (value & (SpvMemorySemanticsMakeAvailableKHRMask | |
| SpvMemorySemanticsMakeVisibleKHRMask)) { |
| const bool includes_storage_class = |
| value & (SpvMemorySemanticsUniformMemoryMask | |
| SpvMemorySemanticsSubgroupMemoryMask | |
| SpvMemorySemanticsWorkgroupMemoryMask | |
| SpvMemorySemanticsCrossWorkgroupMemoryMask | |
| SpvMemorySemanticsAtomicCounterMemoryMask | |
| SpvMemorySemanticsImageMemoryMask | |
| SpvMemorySemanticsOutputMemoryKHRMask); |
| |
| if (!includes_storage_class) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": expected Memory Semantics to include a storage class"; |
| } |
| } |
| |
| if (value & SpvMemorySemanticsMakeVisibleKHRMask && |
| !(value & (SpvMemorySemanticsAcquireMask | |
| SpvMemorySemanticsAcquireReleaseMask))) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": MakeVisibleKHR Memory Semantics also requires either Acquire " |
| "or AcquireRelease Memory Semantics"; |
| } |
| |
| if (value & SpvMemorySemanticsMakeAvailableKHRMask && |
| !(value & (SpvMemorySemanticsReleaseMask | |
| SpvMemorySemanticsAcquireReleaseMask))) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": MakeAvailableKHR Memory Semantics also requires either " |
| "Release or AcquireRelease Memory Semantics"; |
| } |
| |
| if (spvIsVulkanEnv(_.context()->target_env)) { |
| const bool includes_storage_class = |
| value & (SpvMemorySemanticsUniformMemoryMask | |
| SpvMemorySemanticsWorkgroupMemoryMask | |
| SpvMemorySemanticsImageMemoryMask | |
| SpvMemorySemanticsOutputMemoryKHRMask); |
| |
| if (opcode == SpvOpMemoryBarrier && !num_memory_order_set_bits) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << _.VkErrorID(4649) << spvOpcodeString(opcode) |
| << ": Vulkan specification requires Memory Semantics to have " |
| "one " |
| "of the following bits set: Acquire, Release, " |
| "AcquireRelease " |
| "or SequentiallyConsistent"; |
| } |
| |
| if (opcode == SpvOpMemoryBarrier && !includes_storage_class) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << _.VkErrorID(4649) << spvOpcodeString(opcode) |
| << ": expected Memory Semantics to include a Vulkan-supported " |
| "storage class"; |
| } |
| |
| #if 0 |
| // TODO(atgoo@github.com): this check fails Vulkan CTS, reenable once fixed. |
| if (opcode == SpvOpControlBarrier && value && !includes_storage_class) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": expected Memory Semantics to include a Vulkan-supported " |
| "storage class if Memory Semantics is not None"; |
| } |
| #endif |
| } |
| |
| if (opcode == SpvOpAtomicFlagClear && |
| (value & SpvMemorySemanticsAcquireMask || |
| value & SpvMemorySemanticsAcquireReleaseMask)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << "Memory Semantics Acquire and AcquireRelease cannot be used " |
| "with " |
| << spvOpcodeString(opcode); |
| } |
| |
| if (opcode == SpvOpAtomicCompareExchange && operand_index == 5 && |
| (value & SpvMemorySemanticsReleaseMask || |
| value & SpvMemorySemanticsAcquireReleaseMask)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << spvOpcodeString(opcode) |
| << ": Memory Semantics Release and AcquireRelease cannot be " |
| "used " |
| "for operand Unequal"; |
| } |
| |
| if (spvIsVulkanEnv(_.context()->target_env)) { |
| if (opcode == SpvOpAtomicLoad && |
| (value & SpvMemorySemanticsReleaseMask || |
| value & SpvMemorySemanticsAcquireReleaseMask || |
| value & SpvMemorySemanticsSequentiallyConsistentMask)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << "Vulkan spec disallows OpAtomicLoad with Memory Semantics " |
| "Release, AcquireRelease and SequentiallyConsistent"; |
| } |
| |
| if (opcode == SpvOpAtomicStore && |
| (value & SpvMemorySemanticsAcquireMask || |
| value & SpvMemorySemanticsAcquireReleaseMask || |
| value & SpvMemorySemanticsSequentiallyConsistentMask)) { |
| return _.diag(SPV_ERROR_INVALID_DATA, inst) |
| << "Vulkan spec disallows OpAtomicStore with Memory Semantics " |
| "Acquire, AcquireRelease and SequentiallyConsistent"; |
| } |
| } |
| |
| // TODO(atgoo@github.com) Add checks for OpenCL and OpenGL environments. |
| |
| return SPV_SUCCESS; |
| } |
| |
| } // namespace val |
| } // namespace spvtools |
