1 // Copyright 2020 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "SpirvShader.hpp" 16 17 #include "spirv-tools/libspirv.h" 18 19 #include <spirv/unified1/spirv.hpp> 20 21 namespace sw { 22 OpcodeName(spv::Op opcode)23const char *Spirv::OpcodeName(spv::Op opcode) 24 { 25 return spvOpcodeString(opcode); 26 } 27 28 // This function is used by the shader debugger to determine whether an instruction is steppable. IsStatement(spv::Op opcode)29bool Spirv::IsStatement(spv::Op opcode) 30 { 31 switch(opcode) 32 { 33 default: 34 // Most statement-like instructions produce a result which has a type. 35 // Note OpType* instructions have a result but it is a type itself. 36 { 37 bool hasResult = false; 38 bool hasResultType = false; 39 spv::HasResultAndType(opcode, &hasResult, &hasResultType); 40 41 return hasResult && hasResultType; 42 } 43 break; 44 45 // Instructions without a result but potential side-effects. 46 case spv::OpNop: 47 case spv::OpStore: 48 case spv::OpCopyMemory: 49 case spv::OpCopyMemorySized: 50 case spv::OpImageWrite: 51 case spv::OpEmitVertex: 52 case spv::OpEndPrimitive: 53 case spv::OpEmitStreamVertex: 54 case spv::OpEndStreamPrimitive: 55 case spv::OpControlBarrier: 56 case spv::OpMemoryBarrier: 57 case spv::OpAtomicStore: 58 case spv::OpBranch: 59 case spv::OpBranchConditional: 60 case spv::OpSwitch: 61 case spv::OpKill: 62 case spv::OpReturn: 63 case spv::OpReturnValue: 64 case spv::OpLifetimeStart: 65 case spv::OpLifetimeStop: 66 case spv::OpGroupWaitEvents: 67 case spv::OpCommitReadPipe: 68 case spv::OpCommitWritePipe: 69 case spv::OpGroupCommitReadPipe: 70 case spv::OpGroupCommitWritePipe: 71 case spv::OpRetainEvent: 72 case spv::OpReleaseEvent: 73 case spv::OpSetUserEventStatus: 74 case spv::OpCaptureEventProfilingInfo: 75 case spv::OpAtomicFlagClear: 76 case spv::OpMemoryNamedBarrier: 77 case spv::OpTerminateInvocation: 78 case spv::OpTraceRayKHR: 79 case spv::OpExecuteCallableKHR: 80 case spv::OpIgnoreIntersectionKHR: 81 case spv::OpTerminateRayKHR: 82 case spv::OpRayQueryInitializeKHR: 83 case spv::OpRayQueryTerminateKHR: 84 case spv::OpRayQueryGenerateIntersectionKHR: 85 case spv::OpRayQueryConfirmIntersectionKHR: 86 case spv::OpBeginInvocationInterlockEXT: 87 case spv::OpEndInvocationInterlockEXT: 88 case spv::OpDemoteToHelperInvocationEXT: 89 case spv::OpAssumeTrueKHR: 90 return true; 91 } 92 } 93 IsTerminator(spv::Op opcode)94bool Spirv::IsTerminator(spv::Op opcode) 95 { 96 switch(opcode) 97 { 98 // Branch instructions 99 case spv::OpBranch: 100 case spv::OpBranchConditional: 101 case spv::OpSwitch: 102 // Function termination instructions 103 case spv::OpReturn: 104 case spv::OpReturnValue: 105 case spv::OpKill: 106 case spv::OpUnreachable: 107 case spv::OpTerminateInvocation: 108 return true; 109 default: 110 return false; 111 } 112 } 113 114 } // namespace sw