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SPIRV-Tools/source/opt/instrument_pass.cpp
greg-lunarg 43fb2403a6 Instrument: Fix code for version 2 output format. (#2655) 
Correct record size. Also bring version 2 tests up to version 1
equivalence.
2019-06-06 11:35:34 -04:00

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// Copyright (c) 2018 The Khronos Group Inc.
// Copyright (c) 2018 Valve Corporation
// Copyright (c) 2018 LunarG Inc.
//
// 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 "instrument_pass.h"
#include "source/cfa.h"
#include "source/spirv_constant.h"
namespace {
// Common Parameter Positions
static const int kInstCommonParamInstIdx = 0;
static const int kInstCommonParamCnt = 1;
// Indices of operands in SPIR-V instructions
static const int kEntryPointExecutionModelInIdx = 0;
static const int kEntryPointFunctionIdInIdx = 1;
} // anonymous namespace
namespace spvtools {
namespace opt {
void InstrumentPass::MovePreludeCode(
BasicBlock::iterator ref_inst_itr,
UptrVectorIterator<BasicBlock> ref_block_itr,
std::unique_ptr<BasicBlock>* new_blk_ptr) {
same_block_pre_.clear();
same_block_post_.clear();
// Initialize new block. Reuse label from original block.
new_blk_ptr->reset(new BasicBlock(std::move(ref_block_itr->GetLabel())));
// Move contents of original ref block up to ref instruction.
for (auto cii = ref_block_itr->begin(); cii != ref_inst_itr;
cii = ref_block_itr->begin()) {
Instruction* inst = &*cii;
inst->RemoveFromList();
std::unique_ptr<Instruction> mv_ptr(inst);
// Remember same-block ops for possible regeneration.
if (IsSameBlockOp(&*mv_ptr)) {
auto* sb_inst_ptr = mv_ptr.get();
same_block_pre_[mv_ptr->result_id()] = sb_inst_ptr;
}
(*new_blk_ptr)->AddInstruction(std::move(mv_ptr));
}
}
void InstrumentPass::MovePostludeCode(
UptrVectorIterator<BasicBlock> ref_block_itr, BasicBlock* new_blk_ptr) {
// new_blk_ptr->reset(new BasicBlock(NewLabel(ref_block_itr->id())));
// Move contents of original ref block.
for (auto cii = ref_block_itr->begin(); cii != ref_block_itr->end();
cii = ref_block_itr->begin()) {
Instruction* inst = &*cii;
inst->RemoveFromList();
std::unique_ptr<Instruction> mv_inst(inst);
// Regenerate any same-block instruction that has not been seen in the
// current block.
if (same_block_pre_.size() > 0) {
CloneSameBlockOps(&mv_inst, &same_block_post_, &same_block_pre_,
new_blk_ptr);
// Remember same-block ops in this block.
if (IsSameBlockOp(&*mv_inst)) {
const uint32_t rid = mv_inst->result_id();
same_block_post_[rid] = rid;
}
}
new_blk_ptr->AddInstruction(std::move(mv_inst));
}
}
std::unique_ptr<Instruction> InstrumentPass::NewLabel(uint32_t label_id) {
std::unique_ptr<Instruction> newLabel(
new Instruction(context(), SpvOpLabel, 0, label_id, {}));
get_def_use_mgr()->AnalyzeInstDefUse(&*newLabel);
return newLabel;
}
uint32_t InstrumentPass::GenUintCastCode(uint32_t val_id,
InstructionBuilder* builder) {
// Cast value to 32-bit unsigned if necessary
if (get_def_use_mgr()->GetDef(val_id)->type_id() == GetUintId())
return val_id;
return builder->AddUnaryOp(GetUintId(), SpvOpBitcast, val_id)->result_id();
}
void InstrumentPass::GenDebugOutputFieldCode(uint32_t base_offset_id,
uint32_t field_offset,
uint32_t field_value_id,
InstructionBuilder* builder) {
// Cast value to 32-bit unsigned if necessary
uint32_t val_id = GenUintCastCode(field_value_id, builder);
// Store value
Instruction* data_idx_inst =
builder->AddBinaryOp(GetUintId(), SpvOpIAdd, base_offset_id,
builder->GetUintConstantId(field_offset));
uint32_t buf_id = GetOutputBufferId();
uint32_t buf_uint_ptr_id = GetBufferUintPtrId();
Instruction* achain_inst =
builder->AddTernaryOp(buf_uint_ptr_id, SpvOpAccessChain, buf_id,
builder->GetUintConstantId(kDebugOutputDataOffset),
data_idx_inst->result_id());
(void)builder->AddBinaryOp(0, SpvOpStore, achain_inst->result_id(), val_id);
}
void InstrumentPass::GenCommonStreamWriteCode(uint32_t record_sz,
uint32_t inst_id,
uint32_t stage_idx,
uint32_t base_offset_id,
InstructionBuilder* builder) {
// Store record size
GenDebugOutputFieldCode(base_offset_id, kInstCommonOutSize,
builder->GetUintConstantId(record_sz), builder);
// Store Shader Id
GenDebugOutputFieldCode(base_offset_id, kInstCommonOutShaderId,
builder->GetUintConstantId(shader_id_), builder);
// Store Instruction Idx
GenDebugOutputFieldCode(base_offset_id, kInstCommonOutInstructionIdx, inst_id,
builder);
// Store Stage Idx
GenDebugOutputFieldCode(base_offset_id, kInstCommonOutStageIdx,
builder->GetUintConstantId(stage_idx), builder);
}
void InstrumentPass::GenFragCoordEltDebugOutputCode(
uint32_t base_offset_id, uint32_t uint_frag_coord_id, uint32_t element,
InstructionBuilder* builder) {
Instruction* element_val_inst = builder->AddIdLiteralOp(
GetUintId(), SpvOpCompositeExtract, uint_frag_coord_id, element);
GenDebugOutputFieldCode(base_offset_id, kInstFragOutFragCoordX + element,
element_val_inst->result_id(), builder);
}
uint32_t InstrumentPass::GenVarLoad(uint32_t var_id,
InstructionBuilder* builder) {
Instruction* var_inst = get_def_use_mgr()->GetDef(var_id);
uint32_t type_id = GetPointeeTypeId(var_inst);
Instruction* load_inst = builder->AddUnaryOp(type_id, SpvOpLoad, var_id);
return load_inst->result_id();
}
void InstrumentPass::GenBuiltinOutputCode(uint32_t builtin_id,
uint32_t builtin_off,
uint32_t base_offset_id,
InstructionBuilder* builder) {
// Load and store builtin
uint32_t load_id = GenVarLoad(builtin_id, builder);
GenDebugOutputFieldCode(base_offset_id, builtin_off, load_id, builder);
}
void InstrumentPass::GenStageStreamWriteCode(uint32_t stage_idx,
uint32_t base_offset_id,
InstructionBuilder* builder) {
// TODO(greg-lunarg): Add support for all stages
switch (stage_idx) {
case SpvExecutionModelVertex: {
// Load and store VertexId and InstanceId
GenBuiltinOutputCode(
context()->GetBuiltinInputVarId(SpvBuiltInVertexIndex),
kInstVertOutVertexIndex, base_offset_id, builder);
GenBuiltinOutputCode(
context()->GetBuiltinInputVarId(SpvBuiltInInstanceIndex),
kInstVertOutInstanceIndex, base_offset_id, builder);
} break;
case SpvExecutionModelGLCompute: {
// Load and store GlobalInvocationId.
uint32_t load_id = GenVarLoad(
context()->GetBuiltinInputVarId(SpvBuiltInGlobalInvocationId),
builder);
Instruction* x_inst = builder->AddIdLiteralOp(
GetUintId(), SpvOpCompositeExtract, load_id, 0);
Instruction* y_inst = builder->AddIdLiteralOp(
GetUintId(), SpvOpCompositeExtract, load_id, 1);
Instruction* z_inst = builder->AddIdLiteralOp(
GetUintId(), SpvOpCompositeExtract, load_id, 2);
if (version_ == 1) {
// For version 1 format, as a stopgap, pack uvec3 into first word:
// x << 21 | y << 10 | z. Second word is unused. (DEPRECATED)
Instruction* x_shft_inst = builder->AddBinaryOp(
GetUintId(), SpvOpShiftLeftLogical, x_inst->result_id(),
builder->GetUintConstantId(21));
Instruction* y_shft_inst = builder->AddBinaryOp(
GetUintId(), SpvOpShiftLeftLogical, y_inst->result_id(),
builder->GetUintConstantId(10));
Instruction* x_or_y_inst = builder->AddBinaryOp(
GetUintId(), SpvOpBitwiseOr, x_shft_inst->result_id(),
y_shft_inst->result_id());
Instruction* x_or_y_or_z_inst =
builder->AddBinaryOp(GetUintId(), SpvOpBitwiseOr,
x_or_y_inst->result_id(), z_inst->result_id());
GenDebugOutputFieldCode(base_offset_id, kInstCompOutGlobalInvocationId,
x_or_y_or_z_inst->result_id(), builder);
} else {
// For version 2 format, write all three words
GenDebugOutputFieldCode(base_offset_id, kInstCompOutGlobalInvocationIdX,
x_inst->result_id(), builder);
GenDebugOutputFieldCode(base_offset_id, kInstCompOutGlobalInvocationIdY,
y_inst->result_id(), builder);
GenDebugOutputFieldCode(base_offset_id, kInstCompOutGlobalInvocationIdZ,
z_inst->result_id(), builder);
}
} break;
case SpvExecutionModelGeometry: {
// Load and store PrimitiveId and InvocationId.
GenBuiltinOutputCode(
context()->GetBuiltinInputVarId(SpvBuiltInPrimitiveId),
kInstGeomOutPrimitiveId, base_offset_id, builder);
GenBuiltinOutputCode(
context()->GetBuiltinInputVarId(SpvBuiltInInvocationId),
kInstGeomOutInvocationId, base_offset_id, builder);
} break;
case SpvExecutionModelTessellationControl: {
// Load and store InvocationId and PrimitiveId
GenBuiltinOutputCode(
context()->GetBuiltinInputVarId(SpvBuiltInInvocationId),
kInstTessCtlOutInvocationId, base_offset_id, builder);
GenBuiltinOutputCode(
context()->GetBuiltinInputVarId(SpvBuiltInPrimitiveId),
kInstTessCtlOutPrimitiveId, base_offset_id, builder);
} break;
case SpvExecutionModelTessellationEvaluation: {
if (version_ == 1) {
// For format version 1, load and store InvocationId.
GenBuiltinOutputCode(
context()->GetBuiltinInputVarId(SpvBuiltInInvocationId),
kInstTessOutInvocationId, base_offset_id, builder);
} else {
// For format version 2, load and store PrimitiveId and TessCoord.uv
GenBuiltinOutputCode(
context()->GetBuiltinInputVarId(SpvBuiltInPrimitiveId),
kInstTessEvalOutPrimitiveId, base_offset_id, builder);
uint32_t load_id = GenVarLoad(
context()->GetBuiltinInputVarId(SpvBuiltInTessCoord), builder);
Instruction* u_inst = builder->AddIdLiteralOp(
GetUintId(), SpvOpCompositeExtract, load_id, 0);
Instruction* v_inst = builder->AddIdLiteralOp(
GetUintId(), SpvOpCompositeExtract, load_id, 1);
GenDebugOutputFieldCode(base_offset_id, kInstTessEvalOutTessCoordU,
u_inst->result_id(), builder);
GenDebugOutputFieldCode(base_offset_id, kInstTessEvalOutTessCoordV,
v_inst->result_id(), builder);
}
} break;
case SpvExecutionModelFragment: {
// Load FragCoord and convert to Uint
Instruction* frag_coord_inst = builder->AddUnaryOp(
GetVec4FloatId(), SpvOpLoad,
context()->GetBuiltinInputVarId(SpvBuiltInFragCoord));
Instruction* uint_frag_coord_inst = builder->AddUnaryOp(
GetVec4UintId(), SpvOpBitcast, frag_coord_inst->result_id());
for (uint32_t u = 0; u < 2u; ++u)
GenFragCoordEltDebugOutputCode(
base_offset_id, uint_frag_coord_inst->result_id(), u, builder);
} break;
default: { assert(false && "unsupported stage"); } break;
}
}
void InstrumentPass::GenDebugStreamWrite(
uint32_t instruction_idx, uint32_t stage_idx,
const std::vector<uint32_t>& validation_ids, InstructionBuilder* builder) {
// Call debug output function. Pass func_idx, instruction_idx and
// validation ids as args.
uint32_t val_id_cnt = static_cast<uint32_t>(validation_ids.size());
uint32_t output_func_id = GetStreamWriteFunctionId(stage_idx, val_id_cnt);
std::vector<uint32_t> args = {output_func_id,
builder->GetUintConstantId(instruction_idx)};
(void)args.insert(args.end(), validation_ids.begin(), validation_ids.end());
(void)builder->AddNaryOp(GetVoidId(), SpvOpFunctionCall, args);
}
uint32_t InstrumentPass::GenDebugDirectRead(
const std::vector<uint32_t>& offset_ids, InstructionBuilder* builder) {
// Call debug input function. Pass func_idx and offset ids as args.
uint32_t off_id_cnt = static_cast<uint32_t>(offset_ids.size());
uint32_t input_func_id = GetDirectReadFunctionId(off_id_cnt);
std::vector<uint32_t> args = {input_func_id};
(void)args.insert(args.end(), offset_ids.begin(), offset_ids.end());
return builder->AddNaryOp(GetUintId(), SpvOpFunctionCall, args)->result_id();
}
bool InstrumentPass::IsSameBlockOp(const Instruction* inst) const {
return inst->opcode() == SpvOpSampledImage || inst->opcode() == SpvOpImage;
}
void InstrumentPass::CloneSameBlockOps(
std::unique_ptr<Instruction>* inst,
std::unordered_map<uint32_t, uint32_t>* same_blk_post,
std::unordered_map<uint32_t, Instruction*>* same_blk_pre,
BasicBlock* block_ptr) {
(*inst)->ForEachInId(
[&same_blk_post, &same_blk_pre, &block_ptr, this](uint32_t* iid) {
const auto map_itr = (*same_blk_post).find(*iid);
if (map_itr == (*same_blk_post).end()) {
const auto map_itr2 = (*same_blk_pre).find(*iid);
if (map_itr2 != (*same_blk_pre).end()) {
// Clone pre-call same-block ops, map result id.
const Instruction* in_inst = map_itr2->second;
std::unique_ptr<Instruction> sb_inst(in_inst->Clone(context()));
CloneSameBlockOps(&sb_inst, same_blk_post, same_blk_pre, block_ptr);
const uint32_t rid = sb_inst->result_id();
const uint32_t nid = this->TakeNextId();
get_decoration_mgr()->CloneDecorations(rid, nid);
sb_inst->SetResultId(nid);
(*same_blk_post)[rid] = nid;
*iid = nid;
block_ptr->AddInstruction(std::move(sb_inst));
}
} else {
// Reset same-block op operand.
*iid = map_itr->second;
}
});
}
void InstrumentPass::UpdateSucceedingPhis(
std::vector<std::unique_ptr<BasicBlock>>& new_blocks) {
const auto first_blk = new_blocks.begin();
const auto last_blk = new_blocks.end() - 1;
const uint32_t first_id = (*first_blk)->id();
const uint32_t last_id = (*last_blk)->id();
const BasicBlock& const_last_block = *last_blk->get();
const_last_block.ForEachSuccessorLabel(
[&first_id, &last_id, this](const uint32_t succ) {
BasicBlock* sbp = this->id2block_[succ];
sbp->ForEachPhiInst([&first_id, &last_id, this](Instruction* phi) {
bool changed = false;
phi->ForEachInId([&first_id, &last_id, &changed](uint32_t* id) {
if (*id == first_id) {
*id = last_id;
changed = true;
}
});
if (changed) get_def_use_mgr()->AnalyzeInstUse(phi);
});
});
}
// Return id for output buffer uint ptr type
uint32_t InstrumentPass::GetBufferUintPtrId() {
if (buffer_uint_ptr_id_ == 0) {
buffer_uint_ptr_id_ = context()->get_type_mgr()->FindPointerToType(
GetUintId(), SpvStorageClassStorageBuffer);
}
return buffer_uint_ptr_id_;
}
uint32_t InstrumentPass::GetOutputBufferBinding() {
switch (validation_id_) {
case kInstValidationIdBindless:
return kDebugOutputBindingStream;
default:
assert(false && "unexpected validation id");
}
return 0;
}
uint32_t InstrumentPass::GetInputBufferBinding() {
switch (validation_id_) {
case kInstValidationIdBindless:
return kDebugInputBindingBindless;
default:
assert(false && "unexpected validation id");
}
return 0;
}
analysis::Type* InstrumentPass::GetUintRuntimeArrayType(
analysis::DecorationManager* deco_mgr, analysis::TypeManager* type_mgr) {
if (uint_rarr_ty_ == nullptr) {
analysis::Integer uint_ty(32, false);
analysis::Type* reg_uint_ty = type_mgr->GetRegisteredType(&uint_ty);
analysis::RuntimeArray uint_rarr_ty_tmp(reg_uint_ty);
uint_rarr_ty_ = type_mgr->GetRegisteredType(&uint_rarr_ty_tmp);
uint32_t uint_arr_ty_id = type_mgr->GetTypeInstruction(uint_rarr_ty_);
// By the Vulkan spec, a pre-existing RuntimeArray of uint must be part of
// a block, and will therefore be decorated with an ArrayStride. Therefore
// the undecorated type returned here will not be pre-existing and can
// safely be decorated. Since this type is now decorated, it is out of
// sync with the TypeManager and therefore the TypeManager must be
// invalidated after this pass.
assert(context()->get_def_use_mgr()->NumUses(uint_arr_ty_id) == 0 &&
"used RuntimeArray type returned");
deco_mgr->AddDecorationVal(uint_arr_ty_id, SpvDecorationArrayStride, 4u);
}
return uint_rarr_ty_;
}
void InstrumentPass::AddStorageBufferExt() {
if (storage_buffer_ext_defined_) return;
if (!get_feature_mgr()->HasExtension(kSPV_KHR_storage_buffer_storage_class)) {
const std::string ext_name("SPV_KHR_storage_buffer_storage_class");
const auto num_chars = ext_name.size();
// Compute num words, accommodate the terminating null character.
const auto num_words = (num_chars + 1 + 3) / 4;
std::vector<uint32_t> ext_words(num_words, 0u);
std::memcpy(ext_words.data(), ext_name.data(), num_chars);
context()->AddExtension(std::unique_ptr<Instruction>(
new Instruction(context(), SpvOpExtension, 0u, 0u,
{{SPV_OPERAND_TYPE_LITERAL_STRING, ext_words}})));
}
storage_buffer_ext_defined_ = true;
}
// Return id for output buffer
uint32_t InstrumentPass::GetOutputBufferId() {
if (output_buffer_id_ == 0) {
// If not created yet, create one
analysis::DecorationManager* deco_mgr = get_decoration_mgr();
analysis::TypeManager* type_mgr = context()->get_type_mgr();
analysis::Type* reg_uint_rarr_ty =
GetUintRuntimeArrayType(deco_mgr, type_mgr);
analysis::Integer uint_ty(32, false);
analysis::Type* reg_uint_ty = type_mgr->GetRegisteredType(&uint_ty);
analysis::Struct buf_ty({reg_uint_ty, reg_uint_rarr_ty});
analysis::Type* reg_buf_ty = type_mgr->GetRegisteredType(&buf_ty);
uint32_t obufTyId = type_mgr->GetTypeInstruction(reg_buf_ty);
// By the Vulkan spec, a pre-existing struct containing a RuntimeArray
// must be a block, and will therefore be decorated with Block. Therefore
// the undecorated type returned here will not be pre-existing and can
// safely be decorated. Since this type is now decorated, it is out of
// sync with the TypeManager and therefore the TypeManager must be
// invalidated after this pass.
assert(context()->get_def_use_mgr()->NumUses(obufTyId) == 0 &&
"used struct type returned");
deco_mgr->AddDecoration(obufTyId, SpvDecorationBlock);
deco_mgr->AddMemberDecoration(obufTyId, kDebugOutputSizeOffset,
SpvDecorationOffset, 0);
deco_mgr->AddMemberDecoration(obufTyId, kDebugOutputDataOffset,
SpvDecorationOffset, 4);
uint32_t obufTyPtrId_ =
type_mgr->FindPointerToType(obufTyId, SpvStorageClassStorageBuffer);
output_buffer_id_ = TakeNextId();
std::unique_ptr<Instruction> newVarOp(new Instruction(
context(), SpvOpVariable, obufTyPtrId_, output_buffer_id_,
{{spv_operand_type_t::SPV_OPERAND_TYPE_LITERAL_INTEGER,
{SpvStorageClassStorageBuffer}}}));
context()->AddGlobalValue(std::move(newVarOp));
deco_mgr->AddDecorationVal(output_buffer_id_, SpvDecorationDescriptorSet,
desc_set_);
deco_mgr->AddDecorationVal(output_buffer_id_, SpvDecorationBinding,
GetOutputBufferBinding());
AddStorageBufferExt();
if (get_module()->version() >= SPV_SPIRV_VERSION_WORD(1, 4)) {
// Add the new buffer to all entry points.
for (auto& entry : get_module()->entry_points()) {
entry.AddOperand({SPV_OPERAND_TYPE_ID, {output_buffer_id_}});
context()->AnalyzeUses(&entry);
}
}
}
return output_buffer_id_;
}
uint32_t InstrumentPass::GetInputBufferId() {
if (input_buffer_id_ == 0) {
// If not created yet, create one
analysis::DecorationManager* deco_mgr = get_decoration_mgr();
analysis::TypeManager* type_mgr = context()->get_type_mgr();
analysis::Type* reg_uint_rarr_ty =
GetUintRuntimeArrayType(deco_mgr, type_mgr);
analysis::Struct buf_ty({reg_uint_rarr_ty});
analysis::Type* reg_buf_ty = type_mgr->GetRegisteredType(&buf_ty);
uint32_t ibufTyId = type_mgr->GetTypeInstruction(reg_buf_ty);
// By the Vulkan spec, a pre-existing struct containing a RuntimeArray
// must be a block, and will therefore be decorated with Block. Therefore
// the undecorated type returned here will not be pre-existing and can
// safely be decorated. Since this type is now decorated, it is out of
// sync with the TypeManager and therefore the TypeManager must be
// invalidated after this pass.
assert(context()->get_def_use_mgr()->NumUses(ibufTyId) == 0 &&
"used struct type returned");
deco_mgr->AddDecoration(ibufTyId, SpvDecorationBlock);
deco_mgr->AddMemberDecoration(ibufTyId, 0, SpvDecorationOffset, 0);
uint32_t ibufTyPtrId_ =
type_mgr->FindPointerToType(ibufTyId, SpvStorageClassStorageBuffer);
input_buffer_id_ = TakeNextId();
std::unique_ptr<Instruction> newVarOp(new Instruction(
context(), SpvOpVariable, ibufTyPtrId_, input_buffer_id_,
{{spv_operand_type_t::SPV_OPERAND_TYPE_LITERAL_INTEGER,
{SpvStorageClassStorageBuffer}}}));
context()->AddGlobalValue(std::move(newVarOp));
deco_mgr->AddDecorationVal(input_buffer_id_, SpvDecorationDescriptorSet,
desc_set_);
deco_mgr->AddDecorationVal(input_buffer_id_, SpvDecorationBinding,
GetInputBufferBinding());
AddStorageBufferExt();
if (get_module()->version() >= SPV_SPIRV_VERSION_WORD(1, 4)) {
// Add the new buffer to all entry points.
for (auto& entry : get_module()->entry_points()) {
entry.AddOperand({SPV_OPERAND_TYPE_ID, {input_buffer_id_}});
context()->AnalyzeUses(&entry);
}
}
}
return input_buffer_id_;
}
uint32_t InstrumentPass::GetVec4FloatId() {
if (v4float_id_ == 0) {
analysis::TypeManager* type_mgr = context()->get_type_mgr();
analysis::Float float_ty(32);
analysis::Type* reg_float_ty = type_mgr->GetRegisteredType(&float_ty);
analysis::Vector v4float_ty(reg_float_ty, 4);
analysis::Type* reg_v4float_ty = type_mgr->GetRegisteredType(&v4float_ty);
v4float_id_ = type_mgr->GetTypeInstruction(reg_v4float_ty);
}
return v4float_id_;
}
uint32_t InstrumentPass::GetUintId() {
if (uint_id_ == 0) {
analysis::TypeManager* type_mgr = context()->get_type_mgr();
analysis::Integer uint_ty(32, false);
analysis::Type* reg_uint_ty = type_mgr->GetRegisteredType(&uint_ty);
uint_id_ = type_mgr->GetTypeInstruction(reg_uint_ty);
}
return uint_id_;
}
uint32_t InstrumentPass::GetVec4UintId() {
if (v4uint_id_ == 0) {
analysis::TypeManager* type_mgr = context()->get_type_mgr();
analysis::Integer uint_ty(32, false);
analysis::Type* reg_uint_ty = type_mgr->GetRegisteredType(&uint_ty);
analysis::Vector v4uint_ty(reg_uint_ty, 4);
analysis::Type* reg_v4uint_ty = type_mgr->GetRegisteredType(&v4uint_ty);
v4uint_id_ = type_mgr->GetTypeInstruction(reg_v4uint_ty);
}
return v4uint_id_;
}
uint32_t InstrumentPass::GetBoolId() {
if (bool_id_ == 0) {
analysis::TypeManager* type_mgr = context()->get_type_mgr();
analysis::Bool bool_ty;
analysis::Type* reg_bool_ty = type_mgr->GetRegisteredType(&bool_ty);
bool_id_ = type_mgr->GetTypeInstruction(reg_bool_ty);
}
return bool_id_;
}
uint32_t InstrumentPass::GetVoidId() {
if (void_id_ == 0) {
analysis::TypeManager* type_mgr = context()->get_type_mgr();
analysis::Void void_ty;
analysis::Type* reg_void_ty = type_mgr->GetRegisteredType(&void_ty);
void_id_ = type_mgr->GetTypeInstruction(reg_void_ty);
}
return void_id_;
}
uint32_t InstrumentPass::GetStreamWriteFunctionId(uint32_t stage_idx,
uint32_t val_spec_param_cnt) {
// Total param count is common params plus validation-specific
// params
uint32_t param_cnt = kInstCommonParamCnt + val_spec_param_cnt;
if (output_func_id_ == 0) {
// Create function
output_func_id_ = TakeNextId();
analysis::TypeManager* type_mgr = context()->get_type_mgr();
std::vector<const analysis::Type*> param_types;
for (uint32_t c = 0; c < param_cnt; ++c)
param_types.push_back(type_mgr->GetType(GetUintId()));
analysis::Function func_ty(type_mgr->GetType(GetVoidId()), param_types);
analysis::Type* reg_func_ty = type_mgr->GetRegisteredType(&func_ty);
std::unique_ptr<Instruction> func_inst(new Instruction(
get_module()->context(), SpvOpFunction, GetVoidId(), output_func_id_,
{{spv_operand_type_t::SPV_OPERAND_TYPE_LITERAL_INTEGER,
{SpvFunctionControlMaskNone}},
{spv_operand_type_t::SPV_OPERAND_TYPE_ID,
{type_mgr->GetTypeInstruction(reg_func_ty)}}}));
get_def_use_mgr()->AnalyzeInstDefUse(&*func_inst);
std::unique_ptr<Function> output_func =
MakeUnique<Function>(std::move(func_inst));
// Add parameters
std::vector<uint32_t> param_vec;
for (uint32_t c = 0; c < param_cnt; ++c) {
uint32_t pid = TakeNextId();
param_vec.push_back(pid);
std::unique_ptr<Instruction> param_inst(
new Instruction(get_module()->context(), SpvOpFunctionParameter,
GetUintId(), pid, {}));
get_def_use_mgr()->AnalyzeInstDefUse(&*param_inst);
output_func->AddParameter(std::move(param_inst));
}
// Create first block
uint32_t test_blk_id = TakeNextId();
std::unique_ptr<Instruction> test_label(NewLabel(test_blk_id));
std::unique_ptr<BasicBlock> new_blk_ptr =
MakeUnique<BasicBlock>(std::move(test_label));
InstructionBuilder builder(
context(), &*new_blk_ptr,
IRContext::kAnalysisDefUse | IRContext::kAnalysisInstrToBlockMapping);
// Gen test if debug output buffer size will not be exceeded.
uint32_t val_spec_offset =
(version_ == 1) ? kInstStageOutCnt : kInst2StageOutCnt;
uint32_t obuf_record_sz = val_spec_offset + val_spec_param_cnt;
uint32_t buf_id = GetOutputBufferId();
uint32_t buf_uint_ptr_id = GetBufferUintPtrId();
Instruction* obuf_curr_sz_ac_inst =
builder.AddBinaryOp(buf_uint_ptr_id, SpvOpAccessChain, buf_id,
builder.GetUintConstantId(kDebugOutputSizeOffset));
// Fetch the current debug buffer written size atomically, adding the
// size of the record to be written.
uint32_t obuf_record_sz_id = builder.GetUintConstantId(obuf_record_sz);
uint32_t mask_none_id = builder.GetUintConstantId(SpvMemoryAccessMaskNone);
uint32_t scope_invok_id = builder.GetUintConstantId(SpvScopeInvocation);
Instruction* obuf_curr_sz_inst = builder.AddQuadOp(
GetUintId(), SpvOpAtomicIAdd, obuf_curr_sz_ac_inst->result_id(),
scope_invok_id, mask_none_id, obuf_record_sz_id);
uint32_t obuf_curr_sz_id = obuf_curr_sz_inst->result_id();
// Compute new written size
Instruction* obuf_new_sz_inst =
builder.AddBinaryOp(GetUintId(), SpvOpIAdd, obuf_curr_sz_id,
builder.GetUintConstantId(obuf_record_sz));
// Fetch the data bound
Instruction* obuf_bnd_inst =
builder.AddIdLiteralOp(GetUintId(), SpvOpArrayLength,
GetOutputBufferId(), kDebugOutputDataOffset);
// Test that new written size is less than or equal to debug output
// data bound
Instruction* obuf_safe_inst = builder.AddBinaryOp(
GetBoolId(), SpvOpULessThanEqual, obuf_new_sz_inst->result_id(),
obuf_bnd_inst->result_id());
uint32_t merge_blk_id = TakeNextId();
uint32_t write_blk_id = TakeNextId();
std::unique_ptr<Instruction> merge_label(NewLabel(merge_blk_id));
std::unique_ptr<Instruction> write_label(NewLabel(write_blk_id));
(void)builder.AddConditionalBranch(obuf_safe_inst->result_id(),
write_blk_id, merge_blk_id, merge_blk_id,
SpvSelectionControlMaskNone);
// Close safety test block and gen write block
new_blk_ptr->SetParent(&*output_func);
output_func->AddBasicBlock(std::move(new_blk_ptr));
new_blk_ptr = MakeUnique<BasicBlock>(std::move(write_label));
builder.SetInsertPoint(&*new_blk_ptr);
// Generate common and stage-specific debug record members
GenCommonStreamWriteCode(obuf_record_sz, param_vec[kInstCommonParamInstIdx],
stage_idx, obuf_curr_sz_id, &builder);
GenStageStreamWriteCode(stage_idx, obuf_curr_sz_id, &builder);
// Gen writes of validation specific data
for (uint32_t i = 0; i < val_spec_param_cnt; ++i) {
GenDebugOutputFieldCode(obuf_curr_sz_id, val_spec_offset + i,
param_vec[kInstCommonParamCnt + i], &builder);
}
// Close write block and gen merge block
(void)builder.AddBranch(merge_blk_id);
new_blk_ptr->SetParent(&*output_func);
output_func->AddBasicBlock(std::move(new_blk_ptr));
new_blk_ptr = MakeUnique<BasicBlock>(std::move(merge_label));
builder.SetInsertPoint(&*new_blk_ptr);
// Close merge block and function and add function to module
(void)builder.AddNullaryOp(0, SpvOpReturn);
new_blk_ptr->SetParent(&*output_func);
output_func->AddBasicBlock(std::move(new_blk_ptr));
std::unique_ptr<Instruction> func_end_inst(
new Instruction(get_module()->context(), SpvOpFunctionEnd, 0, 0, {}));
get_def_use_mgr()->AnalyzeInstDefUse(&*func_end_inst);
output_func->SetFunctionEnd(std::move(func_end_inst));
context()->AddFunction(std::move(output_func));
output_func_param_cnt_ = param_cnt;
}
assert(param_cnt == output_func_param_cnt_ && "bad arg count");
return output_func_id_;
}
uint32_t InstrumentPass::GetDirectReadFunctionId(uint32_t param_cnt) {
uint32_t func_id = param2input_func_id_[param_cnt];
if (func_id != 0) return func_id;
// Create input function for param_cnt
func_id = TakeNextId();
analysis::TypeManager* type_mgr = context()->get_type_mgr();
std::vector<const analysis::Type*> param_types;
for (uint32_t c = 0; c < param_cnt; ++c)
param_types.push_back(type_mgr->GetType(GetUintId()));
analysis::Function func_ty(type_mgr->GetType(GetUintId()), param_types);
analysis::Type* reg_func_ty = type_mgr->GetRegisteredType(&func_ty);
std::unique_ptr<Instruction> func_inst(new Instruction(
get_module()->context(), SpvOpFunction, GetUintId(), func_id,
{{spv_operand_type_t::SPV_OPERAND_TYPE_LITERAL_INTEGER,
{SpvFunctionControlMaskNone}},
{spv_operand_type_t::SPV_OPERAND_TYPE_ID,
{type_mgr->GetTypeInstruction(reg_func_ty)}}}));
get_def_use_mgr()->AnalyzeInstDefUse(&*func_inst);
std::unique_ptr<Function> input_func =
MakeUnique<Function>(std::move(func_inst));
// Add parameters
std::vector<uint32_t> param_vec;
for (uint32_t c = 0; c < param_cnt; ++c) {
uint32_t pid = TakeNextId();
param_vec.push_back(pid);
std::unique_ptr<Instruction> param_inst(new Instruction(
get_module()->context(), SpvOpFunctionParameter, GetUintId(), pid, {}));
get_def_use_mgr()->AnalyzeInstDefUse(&*param_inst);
input_func->AddParameter(std::move(param_inst));
}
// Create block
uint32_t blk_id = TakeNextId();
std::unique_ptr<Instruction> blk_label(NewLabel(blk_id));
std::unique_ptr<BasicBlock> new_blk_ptr =
MakeUnique<BasicBlock>(std::move(blk_label));
InstructionBuilder builder(
context(), &*new_blk_ptr,
IRContext::kAnalysisDefUse | IRContext::kAnalysisInstrToBlockMapping);
// For each offset parameter, generate new offset with parameter, adding last
// loaded value if it exists, and load value from input buffer at new offset.
// Return last loaded value.
uint32_t buf_id = GetInputBufferId();
uint32_t buf_uint_ptr_id = GetBufferUintPtrId();
uint32_t last_value_id = 0;
for (uint32_t p = 0; p < param_cnt; ++p) {
uint32_t offset_id;
if (p == 0) {
offset_id = param_vec[0];
} else {
Instruction* offset_inst = builder.AddBinaryOp(
GetUintId(), SpvOpIAdd, last_value_id, param_vec[p]);
offset_id = offset_inst->result_id();
}
Instruction* ac_inst = builder.AddTernaryOp(
buf_uint_ptr_id, SpvOpAccessChain, buf_id,
builder.GetUintConstantId(kDebugInputDataOffset), offset_id);
Instruction* load_inst =
builder.AddUnaryOp(GetUintId(), SpvOpLoad, ac_inst->result_id());
last_value_id = load_inst->result_id();
}
(void)builder.AddInstruction(MakeUnique<Instruction>(
context(), SpvOpReturnValue, 0, 0,
std::initializer_list<Operand>{{SPV_OPERAND_TYPE_ID, {last_value_id}}}));
// Close block and function and add function to module
new_blk_ptr->SetParent(&*input_func);
input_func->AddBasicBlock(std::move(new_blk_ptr));
std::unique_ptr<Instruction> func_end_inst(
new Instruction(get_module()->context(), SpvOpFunctionEnd, 0, 0, {}));
get_def_use_mgr()->AnalyzeInstDefUse(&*func_end_inst);
input_func->SetFunctionEnd(std::move(func_end_inst));
context()->AddFunction(std::move(input_func));
param2input_func_id_[param_cnt] = func_id;
return func_id;
}
bool InstrumentPass::InstrumentFunction(Function* func, uint32_t stage_idx,
InstProcessFunction& pfn) {
bool modified = false;
// Compute function index
uint32_t function_idx = 0;
for (auto fii = get_module()->begin(); fii != get_module()->end(); ++fii) {
if (&*fii == func) break;
++function_idx;
}
std::vector<std::unique_ptr<BasicBlock>> new_blks;
// Using block iterators here because of block erasures and insertions.
for (auto bi = func->begin(); bi != func->end(); ++bi) {
for (auto ii = bi->begin(); ii != bi->end();) {
// Generate instrumentation if warranted
pfn(ii, bi, stage_idx, &new_blks);
if (new_blks.size() == 0) {
++ii;
continue;
}
// Add new blocks to label id map
for (auto& blk : new_blks) id2block_[blk->id()] = &*blk;
// If there are new blocks we know there will always be two or
// more, so update succeeding phis with label of new last block.
size_t newBlocksSize = new_blks.size();
assert(newBlocksSize > 1);
UpdateSucceedingPhis(new_blks);
// Replace original block with new block(s)
bi = bi.Erase();
for (auto& bb : new_blks) {
bb->SetParent(func);
}
bi = bi.InsertBefore(&new_blks);
// Reset block iterator to last new block
for (size_t i = 0; i < newBlocksSize - 1; i++) ++bi;
modified = true;
// Restart instrumenting at beginning of last new block,
// but skip over any new phi or copy instruction.
ii = bi->begin();
if (ii->opcode() == SpvOpPhi || ii->opcode() == SpvOpCopyObject) ++ii;
new_blks.clear();
}
}
return modified;
}
bool InstrumentPass::InstProcessCallTreeFromRoots(InstProcessFunction& pfn,
std::queue<uint32_t>* roots,
uint32_t stage_idx) {
bool modified = false;
std::unordered_set<uint32_t> done;
// Don't process input and output functions
for (auto& ifn : param2input_func_id_) done.insert(ifn.second);
if (output_func_id_ != 0) done.insert(output_func_id_);
// Process all functions from roots
while (!roots->empty()) {
const uint32_t fi = roots->front();
roots->pop();
if (done.insert(fi).second) {
Function* fn = id2function_.at(fi);
// Add calls first so we don't add new output function
context()->AddCalls(fn, roots);
modified = InstrumentFunction(fn, stage_idx, pfn) || modified;
}
}
return modified;
}
bool InstrumentPass::InstProcessEntryPointCallTree(InstProcessFunction& pfn) {
// Make sure all entry points have the same execution model. Do not
// instrument if they do not.
// TODO(greg-lunarg): Handle mixed stages. Technically, a shader module
// can contain entry points with different execution models, although
// such modules will likely be rare as GLSL and HLSL are geared toward
// one model per module. In such cases we will need
// to clone any functions which are in the call trees of entrypoints
// with differing execution models.
uint32_t ecnt = 0;
uint32_t stage = SpvExecutionModelMax;
for (auto& e : get_module()->entry_points()) {
if (ecnt == 0)
stage = e.GetSingleWordInOperand(kEntryPointExecutionModelInIdx);
else if (e.GetSingleWordInOperand(kEntryPointExecutionModelInIdx) != stage)
return false;
++ecnt;
}
// Only supporting vertex, fragment and compute shaders at the moment.
// TODO(greg-lunarg): Handle all stages.
if (stage != SpvExecutionModelVertex && stage != SpvExecutionModelFragment &&
stage != SpvExecutionModelGeometry &&
stage != SpvExecutionModelGLCompute &&
stage != SpvExecutionModelTessellationControl &&
stage != SpvExecutionModelTessellationEvaluation)
return false;
// Add together the roots of all entry points
std::queue<uint32_t> roots;
for (auto& e : get_module()->entry_points()) {
roots.push(e.GetSingleWordInOperand(kEntryPointFunctionIdInIdx));
}
bool modified = InstProcessCallTreeFromRoots(pfn, &roots, stage);
return modified;
}
void InstrumentPass::InitializeInstrument() {
output_buffer_id_ = 0;
buffer_uint_ptr_id_ = 0;
output_func_id_ = 0;
output_func_param_cnt_ = 0;
input_buffer_id_ = 0;
v4float_id_ = 0;
uint_id_ = 0;
v4uint_id_ = 0;
bool_id_ = 0;
void_id_ = 0;
storage_buffer_ext_defined_ = false;
uint_rarr_ty_ = nullptr;
// clear collections
id2function_.clear();
id2block_.clear();
// Initialize function and block maps.
for (auto& fn : *get_module()) {
id2function_[fn.result_id()] = &fn;
for (auto& blk : fn) {
id2block_[blk.id()] = &blk;
}
}
// Remember original instruction offsets
uint32_t module_offset = 0;
Module* module = get_module();
for (auto& i : context()->capabilities()) {
(void)i;
++module_offset;
}
for (auto& i : module->extensions()) {
(void)i;
++module_offset;
}
for (auto& i : module->ext_inst_imports()) {
(void)i;
++module_offset;
}
++module_offset; // memory_model
for (auto& i : module->entry_points()) {
(void)i;
++module_offset;
}
for (auto& i : module->execution_modes()) {
(void)i;
++module_offset;
}
for (auto& i : module->debugs1()) {
(void)i;
++module_offset;
}
for (auto& i : module->debugs2()) {
(void)i;
++module_offset;
}
for (auto& i : module->debugs3()) {
(void)i;
++module_offset;
}
for (auto& i : module->annotations()) {
(void)i;
++module_offset;
}
for (auto& i : module->types_values()) {
module_offset += 1;
module_offset += static_cast<uint32_t>(i.dbg_line_insts().size());
}
auto curr_fn = get_module()->begin();
for (; curr_fn != get_module()->end(); ++curr_fn) {
// Count function instruction
module_offset += 1;
curr_fn->ForEachParam(
[&module_offset](const Instruction*) { module_offset += 1; }, true);
for (auto& blk : *curr_fn) {
// Count label
module_offset += 1;
for (auto& inst : blk) {
module_offset += static_cast<uint32_t>(inst.dbg_line_insts().size());
uid2offset_[inst.unique_id()] = module_offset;
module_offset += 1;
}
}
// Count function end instruction
module_offset += 1;
}
}
} // namespace opt
} // namespace spvtools
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