mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-24 12:30:13 +00:00
333 lines
10 KiB
C++
333 lines
10 KiB
C++
// Copyright (c) 2016 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/name_mapper.h"
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#include <algorithm>
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#include <cassert>
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#include <iterator>
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#include <sstream>
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#include <string>
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#include <unordered_map>
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#include <unordered_set>
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#include "spirv-tools/libspirv.h"
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#include "source/latest_version_spirv_header.h"
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#include "source/parsed_operand.h"
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namespace spvtools {
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namespace {
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// Converts a uint32_t to its string decimal representation.
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std::string to_string(uint32_t id) {
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// Use stringstream, since some versions of Android compilers lack
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// std::to_string.
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std::stringstream os;
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os << id;
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return os.str();
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}
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} // anonymous namespace
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NameMapper GetTrivialNameMapper() { return to_string; }
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FriendlyNameMapper::FriendlyNameMapper(const spv_const_context context,
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const uint32_t* code,
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const size_t wordCount)
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: grammar_(AssemblyGrammar(context)) {
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spv_diagnostic diag = nullptr;
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// We don't care if the parse fails.
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spvBinaryParse(context, this, code, wordCount, nullptr,
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ParseInstructionForwarder, &diag);
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spvDiagnosticDestroy(diag);
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}
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std::string FriendlyNameMapper::NameForId(uint32_t id) {
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auto iter = name_for_id_.find(id);
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if (iter == name_for_id_.end()) {
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// It must have been an invalid module, so just return a trivial mapping.
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// We don't care about uniqueness.
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return to_string(id);
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} else {
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return iter->second;
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}
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}
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std::string FriendlyNameMapper::Sanitize(const std::string& suggested_name) {
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if (suggested_name.empty()) return "_";
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// Otherwise, replace invalid characters by '_'.
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std::string result;
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std::string valid =
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"abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"_0123456789";
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std::transform(suggested_name.begin(), suggested_name.end(),
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std::back_inserter(result), [&valid](const char c) {
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return (std::string::npos == valid.find(c)) ? '_' : c;
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});
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return result;
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}
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void FriendlyNameMapper::SaveName(uint32_t id,
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const std::string& suggested_name) {
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if (name_for_id_.find(id) != name_for_id_.end()) return;
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const std::string sanitized_suggested_name = Sanitize(suggested_name);
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std::string name = sanitized_suggested_name;
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auto inserted = used_names_.insert(name);
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if (!inserted.second) {
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const std::string base_name = sanitized_suggested_name + "_";
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for (uint32_t index = 0; !inserted.second; ++index) {
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name = base_name + to_string(index);
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inserted = used_names_.insert(name);
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}
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}
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name_for_id_[id] = name;
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}
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void FriendlyNameMapper::SaveBuiltInName(uint32_t target_id,
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uint32_t built_in) {
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#define GLCASE(name) \
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case SpvBuiltIn##name: \
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SaveName(target_id, "gl_" #name); \
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return;
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#define GLCASE2(name, suggested) \
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case SpvBuiltIn##name: \
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SaveName(target_id, "gl_" #suggested); \
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return;
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#define CASE(name) \
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case SpvBuiltIn##name: \
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SaveName(target_id, #name); \
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return;
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switch (built_in) {
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GLCASE(Position)
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GLCASE(PointSize)
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GLCASE(ClipDistance)
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GLCASE(CullDistance)
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GLCASE2(VertexId, VertexID)
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GLCASE2(InstanceId, InstanceID)
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GLCASE2(PrimitiveId, PrimitiveID)
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GLCASE2(InvocationId, InvocationID)
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GLCASE(Layer)
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GLCASE(ViewportIndex)
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GLCASE(TessLevelOuter)
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GLCASE(TessLevelInner)
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GLCASE(TessCoord)
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GLCASE(PatchVertices)
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GLCASE(FragCoord)
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GLCASE(PointCoord)
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GLCASE(FrontFacing)
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GLCASE2(SampleId, SampleID)
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GLCASE(SamplePosition)
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GLCASE(SampleMask)
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GLCASE(FragDepth)
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GLCASE(HelperInvocation)
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GLCASE2(NumWorkgroups, NumWorkGroups)
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GLCASE2(WorkgroupSize, WorkGroupSize)
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GLCASE2(WorkgroupId, WorkGroupID)
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GLCASE2(LocalInvocationId, LocalInvocationID)
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GLCASE2(GlobalInvocationId, GlobalInvocationID)
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GLCASE(LocalInvocationIndex)
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CASE(WorkDim)
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CASE(GlobalSize)
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CASE(EnqueuedWorkgroupSize)
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CASE(GlobalOffset)
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CASE(GlobalLinearId)
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CASE(SubgroupSize)
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CASE(SubgroupMaxSize)
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CASE(NumSubgroups)
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CASE(NumEnqueuedSubgroups)
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CASE(SubgroupId)
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CASE(SubgroupLocalInvocationId)
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GLCASE(VertexIndex)
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GLCASE(InstanceIndex)
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GLCASE(BaseInstance)
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CASE(SubgroupEqMaskKHR)
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CASE(SubgroupGeMaskKHR)
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CASE(SubgroupGtMaskKHR)
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CASE(SubgroupLeMaskKHR)
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CASE(SubgroupLtMaskKHR)
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default:
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break;
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}
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#undef GLCASE
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#undef GLCASE2
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#undef CASE
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}
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spv_result_t FriendlyNameMapper::ParseInstruction(
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const spv_parsed_instruction_t& inst) {
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const auto result_id = inst.result_id;
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switch (inst.opcode) {
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case SpvOpName:
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SaveName(inst.words[1], reinterpret_cast<const char*>(inst.words + 2));
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break;
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case SpvOpDecorate:
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// Decorations come after OpName. So OpName will take precedence over
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// decorations.
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//
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// In theory, we should also handle OpGroupDecorate. But that's unlikely
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// to occur.
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if (inst.words[2] == SpvDecorationBuiltIn) {
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assert(inst.num_words > 3);
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SaveBuiltInName(inst.words[1], inst.words[3]);
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}
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break;
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case SpvOpTypeVoid:
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SaveName(result_id, "void");
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break;
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case SpvOpTypeBool:
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SaveName(result_id, "bool");
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break;
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case SpvOpTypeInt: {
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std::string signedness;
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std::string root;
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const auto bit_width = inst.words[2];
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switch (bit_width) {
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case 8:
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root = "char";
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break;
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case 16:
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root = "short";
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break;
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case 32:
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root = "int";
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break;
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case 64:
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root = "long";
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break;
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default:
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root = to_string(bit_width);
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signedness = "i";
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break;
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}
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if (0 == inst.words[3]) signedness = "u";
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SaveName(result_id, signedness + root);
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} break;
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case SpvOpTypeFloat: {
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const auto bit_width = inst.words[2];
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switch (bit_width) {
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case 16:
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SaveName(result_id, "half");
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break;
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case 32:
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SaveName(result_id, "float");
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break;
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case 64:
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SaveName(result_id, "double");
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break;
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default:
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SaveName(result_id, std::string("fp") + to_string(bit_width));
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break;
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}
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} break;
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case SpvOpTypeVector:
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SaveName(result_id, std::string("v") + to_string(inst.words[3]) +
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NameForId(inst.words[2]));
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break;
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case SpvOpTypeMatrix:
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SaveName(result_id, std::string("mat") + to_string(inst.words[3]) +
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NameForId(inst.words[2]));
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break;
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case SpvOpTypeArray:
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SaveName(result_id, std::string("_arr_") + NameForId(inst.words[2]) +
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"_" + NameForId(inst.words[3]));
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break;
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case SpvOpTypeRuntimeArray:
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SaveName(result_id,
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std::string("_runtimearr_") + NameForId(inst.words[2]));
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break;
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case SpvOpTypePointer:
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SaveName(result_id, std::string("_ptr_") +
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NameForEnumOperand(SPV_OPERAND_TYPE_STORAGE_CLASS,
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inst.words[2]) +
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"_" + NameForId(inst.words[3]));
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break;
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case SpvOpTypePipe:
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SaveName(result_id,
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std::string("Pipe") +
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NameForEnumOperand(SPV_OPERAND_TYPE_ACCESS_QUALIFIER,
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inst.words[2]));
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break;
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case SpvOpTypeEvent:
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SaveName(result_id, "Event");
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break;
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case SpvOpTypeDeviceEvent:
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SaveName(result_id, "DeviceEvent");
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break;
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case SpvOpTypeReserveId:
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SaveName(result_id, "ReserveId");
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break;
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case SpvOpTypeQueue:
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SaveName(result_id, "Queue");
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break;
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case SpvOpTypeOpaque:
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SaveName(result_id,
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std::string("Opaque_") +
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Sanitize(reinterpret_cast<const char*>(inst.words + 2)));
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break;
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case SpvOpTypePipeStorage:
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SaveName(result_id, "PipeStorage");
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break;
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case SpvOpTypeNamedBarrier:
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SaveName(result_id, "NamedBarrier");
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break;
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case SpvOpTypeStruct:
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// Structs are mapped rather simplisitically. Just indicate that they
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// are a struct and then give the raw Id number.
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SaveName(result_id, std::string("_struct_") + to_string(result_id));
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break;
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case SpvOpConstantTrue:
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SaveName(result_id, "true");
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break;
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case SpvOpConstantFalse:
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SaveName(result_id, "false");
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break;
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case SpvOpConstant: {
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std::ostringstream value;
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EmitNumericLiteral(&value, inst, inst.operands[2]);
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auto value_str = value.str();
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// Use 'n' to signify negative. Other invalid characters will be mapped
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// to underscore.
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for (auto& c : value_str)
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if (c == '-') c = 'n';
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SaveName(result_id, NameForId(inst.type_id) + "_" + value_str);
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} break;
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default:
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// If this instruction otherwise defines an Id, then save a mapping for
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// it. This is needed to ensure uniqueness in there is an OpName with
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// string something like "1" that might collide with this result_id.
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// We should only do this if a name hasn't already been registered by some
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// previous forward reference.
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if (result_id && name_for_id_.find(result_id) == name_for_id_.end())
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SaveName(result_id, to_string(result_id));
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break;
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}
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return SPV_SUCCESS;
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}
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std::string FriendlyNameMapper::NameForEnumOperand(spv_operand_type_t type,
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uint32_t word) {
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spv_operand_desc desc = nullptr;
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if (SPV_SUCCESS == grammar_.lookupOperand(type, word, &desc)) {
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return desc->name;
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} else {
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// Invalid input. Just give something sane.
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return std::string("StorageClass") + to_string(word);
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}
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}
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} // namespace spvtools
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