mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-26 13:20:05 +00:00
b5d60826e9
Remove stage specific debug info that is only needed by GPU-AV. This allows debug printfs to be used in multi-stage shader modules. Fixes #4892
484 lines
21 KiB
C++
484 lines
21 KiB
C++
// Copyright (c) 2020 The Khronos Group Inc.
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// Copyright (c) 2020 Valve Corporation
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// Copyright (c) 2020 LunarG 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 "inst_debug_printf_pass.h"
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#include "source/spirv_constant.h"
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#include "source/util/string_utils.h"
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#include "spirv/unified1/NonSemanticDebugPrintf.h"
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namespace spvtools {
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namespace opt {
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void InstDebugPrintfPass::GenOutputValues(Instruction* val_inst,
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std::vector<uint32_t>* val_ids,
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InstructionBuilder* builder) {
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uint32_t val_ty_id = val_inst->type_id();
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analysis::TypeManager* type_mgr = context()->get_type_mgr();
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analysis::Type* val_ty = type_mgr->GetType(val_ty_id);
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switch (val_ty->kind()) {
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case analysis::Type::kVector: {
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analysis::Vector* v_ty = val_ty->AsVector();
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const analysis::Type* c_ty = v_ty->element_type();
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uint32_t c_ty_id = type_mgr->GetId(c_ty);
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for (uint32_t c = 0; c < v_ty->element_count(); ++c) {
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Instruction* c_inst =
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builder->AddCompositeExtract(c_ty_id, val_inst->result_id(), {c});
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GenOutputValues(c_inst, val_ids, builder);
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}
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return;
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}
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case analysis::Type::kBool: {
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// Select between uint32 zero or one
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uint32_t zero_id = builder->GetUintConstantId(0);
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uint32_t one_id = builder->GetUintConstantId(1);
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Instruction* sel_inst = builder->AddSelect(
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GetUintId(), val_inst->result_id(), one_id, zero_id);
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val_ids->push_back(sel_inst->result_id());
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return;
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}
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case analysis::Type::kFloat: {
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analysis::Float* f_ty = val_ty->AsFloat();
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switch (f_ty->width()) {
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case 16: {
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// Convert float16 to float32 and recurse
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Instruction* f32_inst = builder->AddUnaryOp(
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GetFloatId(), spv::Op::OpFConvert, val_inst->result_id());
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GenOutputValues(f32_inst, val_ids, builder);
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return;
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}
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case 64: {
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// Bitcast float64 to uint64 and recurse
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Instruction* ui64_inst = builder->AddUnaryOp(
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GetUint64Id(), spv::Op::OpBitcast, val_inst->result_id());
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GenOutputValues(ui64_inst, val_ids, builder);
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return;
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}
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case 32: {
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// Bitcase float32 to uint32
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Instruction* bc_inst = builder->AddUnaryOp(
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GetUintId(), spv::Op::OpBitcast, val_inst->result_id());
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val_ids->push_back(bc_inst->result_id());
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return;
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}
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default:
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assert(false && "unsupported float width");
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return;
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}
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}
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case analysis::Type::kInteger: {
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analysis::Integer* i_ty = val_ty->AsInteger();
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switch (i_ty->width()) {
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case 64: {
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Instruction* ui64_inst = val_inst;
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if (i_ty->IsSigned()) {
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// Bitcast sint64 to uint64
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ui64_inst = builder->AddUnaryOp(GetUint64Id(), spv::Op::OpBitcast,
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val_inst->result_id());
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}
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// Break uint64 into 2x uint32
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Instruction* lo_ui64_inst = builder->AddUnaryOp(
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GetUintId(), spv::Op::OpUConvert, ui64_inst->result_id());
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Instruction* rshift_ui64_inst = builder->AddBinaryOp(
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GetUint64Id(), spv::Op::OpShiftRightLogical,
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ui64_inst->result_id(), builder->GetUintConstantId(32));
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Instruction* hi_ui64_inst = builder->AddUnaryOp(
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GetUintId(), spv::Op::OpUConvert, rshift_ui64_inst->result_id());
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val_ids->push_back(lo_ui64_inst->result_id());
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val_ids->push_back(hi_ui64_inst->result_id());
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return;
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}
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case 8: {
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Instruction* ui8_inst = val_inst;
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if (i_ty->IsSigned()) {
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// Bitcast sint8 to uint8
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ui8_inst = builder->AddUnaryOp(GetUint8Id(), spv::Op::OpBitcast,
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val_inst->result_id());
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}
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// Convert uint8 to uint32
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Instruction* ui32_inst = builder->AddUnaryOp(
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GetUintId(), spv::Op::OpUConvert, ui8_inst->result_id());
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val_ids->push_back(ui32_inst->result_id());
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return;
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}
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case 32: {
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Instruction* ui32_inst = val_inst;
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if (i_ty->IsSigned()) {
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// Bitcast sint32 to uint32
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ui32_inst = builder->AddUnaryOp(GetUintId(), spv::Op::OpBitcast,
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val_inst->result_id());
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}
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// uint32 needs no further processing
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val_ids->push_back(ui32_inst->result_id());
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return;
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}
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default:
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// TODO(greg-lunarg): Support non-32-bit int
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assert(false && "unsupported int width");
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return;
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}
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}
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default:
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assert(false && "unsupported type");
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return;
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}
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}
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void InstDebugPrintfPass::GenOutputCode(
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Instruction* printf_inst,
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std::vector<std::unique_ptr<BasicBlock>>* new_blocks) {
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BasicBlock* back_blk_ptr = &*new_blocks->back();
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InstructionBuilder builder(
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context(), back_blk_ptr,
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IRContext::kAnalysisDefUse | IRContext::kAnalysisInstrToBlockMapping);
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// Gen debug printf record validation-specific values. The format string
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// will have its id written. Vectors will need to be broken down into
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// component values. float16 will need to be converted to float32. Pointer
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// and uint64 will need to be converted to two uint32 values. float32 will
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// need to be bitcast to uint32. int32 will need to be bitcast to uint32.
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std::vector<uint32_t> val_ids;
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bool is_first_operand = false;
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printf_inst->ForEachInId(
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[&is_first_operand, &val_ids, &builder, this](const uint32_t* iid) {
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// skip set operand
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if (!is_first_operand) {
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is_first_operand = true;
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return;
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}
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Instruction* opnd_inst = get_def_use_mgr()->GetDef(*iid);
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if (opnd_inst->opcode() == spv::Op::OpString) {
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uint32_t string_id_id = builder.GetUintConstantId(*iid);
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val_ids.push_back(string_id_id);
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} else {
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GenOutputValues(opnd_inst, &val_ids, &builder);
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}
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});
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GenDebugStreamWrite(
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builder.GetUintConstantId(shader_id_),
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builder.GetUintConstantId(uid2offset_[printf_inst->unique_id()]), val_ids,
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&builder);
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context()->KillInst(printf_inst);
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}
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void InstDebugPrintfPass::GenDebugPrintfCode(
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BasicBlock::iterator ref_inst_itr,
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UptrVectorIterator<BasicBlock> ref_block_itr,
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std::vector<std::unique_ptr<BasicBlock>>* new_blocks) {
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// If not DebugPrintf OpExtInst, return.
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Instruction* printf_inst = &*ref_inst_itr;
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if (printf_inst->opcode() != spv::Op::OpExtInst) return;
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if (printf_inst->GetSingleWordInOperand(0) != ext_inst_printf_id_) return;
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if (printf_inst->GetSingleWordInOperand(1) !=
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NonSemanticDebugPrintfDebugPrintf)
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return;
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// Initialize DefUse manager before dismantling module
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(void)get_def_use_mgr();
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// Move original block's preceding instructions into first new block
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std::unique_ptr<BasicBlock> new_blk_ptr;
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MovePreludeCode(ref_inst_itr, ref_block_itr, &new_blk_ptr);
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new_blocks->push_back(std::move(new_blk_ptr));
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// Generate instructions to output printf args to printf buffer
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GenOutputCode(printf_inst, new_blocks);
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// Caller expects at least two blocks with last block containing remaining
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// code, so end block after instrumentation, create remainder block, and
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// branch to it
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uint32_t rem_blk_id = TakeNextId();
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std::unique_ptr<Instruction> rem_label(NewLabel(rem_blk_id));
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BasicBlock* back_blk_ptr = &*new_blocks->back();
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InstructionBuilder builder(
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context(), back_blk_ptr,
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IRContext::kAnalysisDefUse | IRContext::kAnalysisInstrToBlockMapping);
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(void)builder.AddBranch(rem_blk_id);
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// Gen remainder block
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new_blk_ptr.reset(new BasicBlock(std::move(rem_label)));
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builder.SetInsertPoint(&*new_blk_ptr);
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// Move original block's remaining code into remainder block and add
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// to new blocks
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MovePostludeCode(ref_block_itr, &*new_blk_ptr);
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new_blocks->push_back(std::move(new_blk_ptr));
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}
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// Return id for output buffer
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uint32_t InstDebugPrintfPass::GetOutputBufferId() {
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if (output_buffer_id_ == 0) {
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// If not created yet, create one
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analysis::DecorationManager* deco_mgr = get_decoration_mgr();
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analysis::TypeManager* type_mgr = context()->get_type_mgr();
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analysis::RuntimeArray* reg_uint_rarr_ty = GetUintRuntimeArrayType(32);
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analysis::Integer* reg_uint_ty = GetInteger(32, false);
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analysis::Type* reg_buf_ty =
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GetStruct({reg_uint_ty, reg_uint_ty, reg_uint_rarr_ty});
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uint32_t obufTyId = type_mgr->GetTypeInstruction(reg_buf_ty);
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// By the Vulkan spec, a pre-existing struct containing a RuntimeArray
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// must be a block, and will therefore be decorated with Block. Therefore
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// the undecorated type returned here will not be pre-existing and can
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// safely be decorated. Since this type is now decorated, it is out of
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// sync with the TypeManager and therefore the TypeManager must be
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// invalidated after this pass.
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assert(context()->get_def_use_mgr()->NumUses(obufTyId) == 0 &&
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"used struct type returned");
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deco_mgr->AddDecoration(obufTyId, uint32_t(spv::Decoration::Block));
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deco_mgr->AddMemberDecoration(obufTyId, kDebugOutputFlagsOffset,
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uint32_t(spv::Decoration::Offset), 0);
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deco_mgr->AddMemberDecoration(obufTyId, kDebugOutputSizeOffset,
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uint32_t(spv::Decoration::Offset), 4);
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deco_mgr->AddMemberDecoration(obufTyId, kDebugOutputDataOffset,
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uint32_t(spv::Decoration::Offset), 8);
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uint32_t obufTyPtrId_ =
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type_mgr->FindPointerToType(obufTyId, spv::StorageClass::StorageBuffer);
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output_buffer_id_ = TakeNextId();
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std::unique_ptr<Instruction> newVarOp(new Instruction(
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context(), spv::Op::OpVariable, obufTyPtrId_, output_buffer_id_,
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{{spv_operand_type_t::SPV_OPERAND_TYPE_LITERAL_INTEGER,
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{uint32_t(spv::StorageClass::StorageBuffer)}}}));
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context()->AddGlobalValue(std::move(newVarOp));
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context()->AddDebug2Inst(NewGlobalName(obufTyId, "OutputBuffer"));
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context()->AddDebug2Inst(NewMemberName(obufTyId, 0, "flags"));
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context()->AddDebug2Inst(NewMemberName(obufTyId, 1, "written_count"));
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context()->AddDebug2Inst(NewMemberName(obufTyId, 2, "data"));
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context()->AddDebug2Inst(NewGlobalName(output_buffer_id_, "output_buffer"));
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deco_mgr->AddDecorationVal(
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output_buffer_id_, uint32_t(spv::Decoration::DescriptorSet), desc_set_);
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deco_mgr->AddDecorationVal(output_buffer_id_,
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uint32_t(spv::Decoration::Binding),
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GetOutputBufferBinding());
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AddStorageBufferExt();
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if (get_module()->version() >= SPV_SPIRV_VERSION_WORD(1, 4)) {
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// Add the new buffer to all entry points.
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for (auto& entry : get_module()->entry_points()) {
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entry.AddOperand({SPV_OPERAND_TYPE_ID, {output_buffer_id_}});
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context()->AnalyzeUses(&entry);
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}
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}
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}
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return output_buffer_id_;
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}
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uint32_t InstDebugPrintfPass::GetOutputBufferPtrId() {
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if (output_buffer_ptr_id_ == 0) {
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output_buffer_ptr_id_ = context()->get_type_mgr()->FindPointerToType(
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GetUintId(), spv::StorageClass::StorageBuffer);
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}
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return output_buffer_ptr_id_;
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}
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uint32_t InstDebugPrintfPass::GetOutputBufferBinding() {
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return kDebugOutputPrintfStream;
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}
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void InstDebugPrintfPass::GenDebugOutputFieldCode(uint32_t base_offset_id,
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uint32_t field_offset,
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uint32_t field_value_id,
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InstructionBuilder* builder) {
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// Cast value to 32-bit unsigned if necessary
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uint32_t val_id = GenUintCastCode(field_value_id, builder);
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// Store value
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Instruction* data_idx_inst = builder->AddIAdd(
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GetUintId(), base_offset_id, builder->GetUintConstantId(field_offset));
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uint32_t buf_id = GetOutputBufferId();
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uint32_t buf_uint_ptr_id = GetOutputBufferPtrId();
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Instruction* achain_inst = builder->AddAccessChain(
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buf_uint_ptr_id, buf_id,
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{builder->GetUintConstantId(kDebugOutputDataOffset),
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data_idx_inst->result_id()});
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(void)builder->AddStore(achain_inst->result_id(), val_id);
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}
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uint32_t InstDebugPrintfPass::GetStreamWriteFunctionId(uint32_t param_cnt) {
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enum {
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kShaderId = 0,
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kInstructionIndex = 1,
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kFirstParam = 2,
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};
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// Total param count is common params plus validation-specific
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// params
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if (param2output_func_id_[param_cnt] == 0) {
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// Create function
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param2output_func_id_[param_cnt] = TakeNextId();
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analysis::TypeManager* type_mgr = context()->get_type_mgr();
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const analysis::Type* uint_type = GetInteger(32, false);
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std::vector<const analysis::Type*> param_types(kFirstParam + param_cnt,
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uint_type);
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std::unique_ptr<Function> output_func = StartFunction(
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param2output_func_id_[param_cnt], type_mgr->GetVoidType(), param_types);
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std::vector<uint32_t> param_ids = AddParameters(*output_func, param_types);
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// Create first block
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auto new_blk_ptr = MakeUnique<BasicBlock>(NewLabel(TakeNextId()));
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InstructionBuilder builder(
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context(), &*new_blk_ptr,
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IRContext::kAnalysisDefUse | IRContext::kAnalysisInstrToBlockMapping);
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// Gen test if debug output buffer size will not be exceeded.
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const uint32_t first_param_offset = kInstCommonOutInstructionIdx + 1;
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const uint32_t obuf_record_sz = first_param_offset + param_cnt;
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const uint32_t buf_id = GetOutputBufferId();
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const uint32_t buf_uint_ptr_id = GetOutputBufferPtrId();
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Instruction* obuf_curr_sz_ac_inst = builder.AddAccessChain(
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buf_uint_ptr_id, buf_id,
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{builder.GetUintConstantId(kDebugOutputSizeOffset)});
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// Fetch the current debug buffer written size atomically, adding the
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// size of the record to be written.
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uint32_t obuf_record_sz_id = builder.GetUintConstantId(obuf_record_sz);
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uint32_t mask_none_id =
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builder.GetUintConstantId(uint32_t(spv::MemoryAccessMask::MaskNone));
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uint32_t scope_invok_id =
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builder.GetUintConstantId(uint32_t(spv::Scope::Invocation));
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Instruction* obuf_curr_sz_inst = builder.AddQuadOp(
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GetUintId(), spv::Op::OpAtomicIAdd, obuf_curr_sz_ac_inst->result_id(),
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scope_invok_id, mask_none_id, obuf_record_sz_id);
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uint32_t obuf_curr_sz_id = obuf_curr_sz_inst->result_id();
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// Compute new written size
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Instruction* obuf_new_sz_inst =
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builder.AddIAdd(GetUintId(), obuf_curr_sz_id,
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builder.GetUintConstantId(obuf_record_sz));
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// Fetch the data bound
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Instruction* obuf_bnd_inst =
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builder.AddIdLiteralOp(GetUintId(), spv::Op::OpArrayLength,
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GetOutputBufferId(), kDebugOutputDataOffset);
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// Test that new written size is less than or equal to debug output
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// data bound
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Instruction* obuf_safe_inst = builder.AddBinaryOp(
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GetBoolId(), spv::Op::OpULessThanEqual, obuf_new_sz_inst->result_id(),
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obuf_bnd_inst->result_id());
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uint32_t merge_blk_id = TakeNextId();
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uint32_t write_blk_id = TakeNextId();
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std::unique_ptr<Instruction> merge_label(NewLabel(merge_blk_id));
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std::unique_ptr<Instruction> write_label(NewLabel(write_blk_id));
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(void)builder.AddConditionalBranch(
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obuf_safe_inst->result_id(), write_blk_id, merge_blk_id, merge_blk_id,
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uint32_t(spv::SelectionControlMask::MaskNone));
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// Close safety test block and gen write block
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output_func->AddBasicBlock(std::move(new_blk_ptr));
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new_blk_ptr = MakeUnique<BasicBlock>(std::move(write_label));
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builder.SetInsertPoint(&*new_blk_ptr);
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// Generate common and stage-specific debug record members
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GenDebugOutputFieldCode(obuf_curr_sz_id, kInstCommonOutSize,
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builder.GetUintConstantId(obuf_record_sz),
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&builder);
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// Store Shader Id
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GenDebugOutputFieldCode(obuf_curr_sz_id, kInstCommonOutShaderId,
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param_ids[kShaderId], &builder);
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// Store Instruction Idx
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GenDebugOutputFieldCode(obuf_curr_sz_id, kInstCommonOutInstructionIdx,
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param_ids[kInstructionIndex], &builder);
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// Gen writes of validation specific data
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for (uint32_t i = 0; i < param_cnt; ++i) {
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GenDebugOutputFieldCode(obuf_curr_sz_id, first_param_offset + i,
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param_ids[kFirstParam + i], &builder);
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}
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// Close write block and gen merge block
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(void)builder.AddBranch(merge_blk_id);
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output_func->AddBasicBlock(std::move(new_blk_ptr));
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new_blk_ptr = MakeUnique<BasicBlock>(std::move(merge_label));
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builder.SetInsertPoint(&*new_blk_ptr);
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// Close merge block and function and add function to module
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(void)builder.AddNullaryOp(0, spv::Op::OpReturn);
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output_func->AddBasicBlock(std::move(new_blk_ptr));
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output_func->SetFunctionEnd(EndFunction());
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context()->AddFunction(std::move(output_func));
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std::string name("stream_write_");
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name += std::to_string(param_cnt);
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context()->AddDebug2Inst(
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NewGlobalName(param2output_func_id_[param_cnt], name));
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}
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return param2output_func_id_[param_cnt];
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}
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void InstDebugPrintfPass::GenDebugStreamWrite(
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uint32_t shader_id, uint32_t instruction_idx_id,
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const std::vector<uint32_t>& validation_ids, InstructionBuilder* builder) {
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// Call debug output function. Pass func_idx, instruction_idx and
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// validation ids as args.
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uint32_t val_id_cnt = static_cast<uint32_t>(validation_ids.size());
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std::vector<uint32_t> args = {shader_id, instruction_idx_id};
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(void)args.insert(args.end(), validation_ids.begin(), validation_ids.end());
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(void)builder->AddFunctionCall(GetVoidId(),
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GetStreamWriteFunctionId(val_id_cnt), args);
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}
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|
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std::unique_ptr<Instruction> InstDebugPrintfPass::NewGlobalName(
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uint32_t id, const std::string& name_str) {
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std::string prefixed_name{"inst_printf_"};
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prefixed_name += name_str;
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return NewName(id, prefixed_name);
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}
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|
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std::unique_ptr<Instruction> InstDebugPrintfPass::NewMemberName(
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uint32_t id, uint32_t member_index, const std::string& name_str) {
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return MakeUnique<Instruction>(
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context(), spv::Op::OpMemberName, 0, 0,
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std::initializer_list<Operand>{
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{SPV_OPERAND_TYPE_ID, {id}},
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{SPV_OPERAND_TYPE_LITERAL_INTEGER, {member_index}},
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{SPV_OPERAND_TYPE_LITERAL_STRING, utils::MakeVector(name_str)}});
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}
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|
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void InstDebugPrintfPass::InitializeInstDebugPrintf() {
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// Initialize base class
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InitializeInstrument();
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output_buffer_id_ = 0;
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|
output_buffer_ptr_id_ = 0;
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|
}
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|
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Pass::Status InstDebugPrintfPass::ProcessImpl() {
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|
// Perform printf instrumentation on each entry point function in module
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InstProcessFunction pfn =
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|
[this](BasicBlock::iterator ref_inst_itr,
|
|
UptrVectorIterator<BasicBlock> ref_block_itr,
|
|
[[maybe_unused]] uint32_t stage_idx,
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|
std::vector<std::unique_ptr<BasicBlock>>* new_blocks) {
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|
return GenDebugPrintfCode(ref_inst_itr, ref_block_itr, new_blocks);
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|
};
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|
(void)InstProcessEntryPointCallTree(pfn);
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|
// Remove DebugPrintf OpExtInstImport instruction
|
|
Instruction* ext_inst_import_inst =
|
|
get_def_use_mgr()->GetDef(ext_inst_printf_id_);
|
|
context()->KillInst(ext_inst_import_inst);
|
|
// If no remaining non-semantic instruction sets, remove non-semantic debug
|
|
// info extension from module and feature manager
|
|
bool non_sem_set_seen = false;
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|
for (auto c_itr = context()->module()->ext_inst_import_begin();
|
|
c_itr != context()->module()->ext_inst_import_end(); ++c_itr) {
|
|
const std::string set_name = c_itr->GetInOperand(0).AsString();
|
|
if (spvtools::utils::starts_with(set_name, "NonSemantic.")) {
|
|
non_sem_set_seen = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!non_sem_set_seen) {
|
|
context()->RemoveExtension(kSPV_KHR_non_semantic_info);
|
|
}
|
|
return Status::SuccessWithChange;
|
|
}
|
|
|
|
Pass::Status InstDebugPrintfPass::Process() {
|
|
ext_inst_printf_id_ =
|
|
get_module()->GetExtInstImportId("NonSemantic.DebugPrintf");
|
|
if (ext_inst_printf_id_ == 0) return Status::SuccessWithoutChange;
|
|
InitializeInstDebugPrintf();
|
|
return ProcessImpl();
|
|
}
|
|
|
|
} // namespace opt
|
|
} // namespace spvtools
|