1508 lines
52 KiB
C++
1508 lines
52 KiB
C++
//
|
|
// Copyright (C) 2015 LunarG, Inc.
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions
|
|
// are met:
|
|
//
|
|
// Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
//
|
|
// Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
//
|
|
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
|
|
#include "SPVRemapper.h"
|
|
#include "doc.h"
|
|
|
|
#if !defined (use_cpp11)
|
|
// ... not supported before C++11
|
|
#else // defined (use_cpp11)
|
|
|
|
#include <algorithm>
|
|
#include <cassert>
|
|
#include "../glslang/Include/Common.h"
|
|
|
|
namespace spv {
|
|
|
|
// By default, just abort on error. Can be overridden via RegisterErrorHandler
|
|
spirvbin_t::errorfn_t spirvbin_t::errorHandler = [](const std::string&) { exit(5); };
|
|
// By default, eat log messages. Can be overridden via RegisterLogHandler
|
|
spirvbin_t::logfn_t spirvbin_t::logHandler = [](const std::string&) { };
|
|
|
|
// This can be overridden to provide other message behavior if needed
|
|
void spirvbin_t::msg(int minVerbosity, int indent, const std::string& txt) const
|
|
{
|
|
if (verbose >= minVerbosity)
|
|
logHandler(std::string(indent, ' ') + txt);
|
|
}
|
|
|
|
// hash opcode, with special handling for OpExtInst
|
|
std::uint32_t spirvbin_t::asOpCodeHash(unsigned word)
|
|
{
|
|
const spv::Op opCode = asOpCode(word);
|
|
|
|
std::uint32_t offset = 0;
|
|
|
|
switch (opCode) {
|
|
case spv::OpExtInst:
|
|
offset += asId(word + 4); break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return opCode * 19 + offset; // 19 = small prime
|
|
}
|
|
|
|
spirvbin_t::range_t spirvbin_t::literalRange(spv::Op opCode) const
|
|
{
|
|
static const int maxCount = 1<<30;
|
|
|
|
switch (opCode) {
|
|
case spv::OpTypeFloat: // fall through...
|
|
case spv::OpTypePointer: return range_t(2, 3);
|
|
case spv::OpTypeInt: return range_t(2, 4);
|
|
// TODO: case spv::OpTypeImage:
|
|
// TODO: case spv::OpTypeSampledImage:
|
|
case spv::OpTypeSampler: return range_t(3, 8);
|
|
case spv::OpTypeVector: // fall through
|
|
case spv::OpTypeMatrix: // ...
|
|
case spv::OpTypePipe: return range_t(3, 4);
|
|
case spv::OpConstant: return range_t(3, maxCount);
|
|
default: return range_t(0, 0);
|
|
}
|
|
}
|
|
|
|
spirvbin_t::range_t spirvbin_t::typeRange(spv::Op opCode) const
|
|
{
|
|
static const int maxCount = 1<<30;
|
|
|
|
if (isConstOp(opCode))
|
|
return range_t(1, 2);
|
|
|
|
switch (opCode) {
|
|
case spv::OpTypeVector: // fall through
|
|
case spv::OpTypeMatrix: // ...
|
|
case spv::OpTypeSampler: // ...
|
|
case spv::OpTypeArray: // ...
|
|
case spv::OpTypeRuntimeArray: // ...
|
|
case spv::OpTypePipe: return range_t(2, 3);
|
|
case spv::OpTypeStruct: // fall through
|
|
case spv::OpTypeFunction: return range_t(2, maxCount);
|
|
case spv::OpTypePointer: return range_t(3, 4);
|
|
default: return range_t(0, 0);
|
|
}
|
|
}
|
|
|
|
spirvbin_t::range_t spirvbin_t::constRange(spv::Op opCode) const
|
|
{
|
|
static const int maxCount = 1<<30;
|
|
|
|
switch (opCode) {
|
|
case spv::OpTypeArray: // fall through...
|
|
case spv::OpTypeRuntimeArray: return range_t(3, 4);
|
|
case spv::OpConstantComposite: return range_t(3, maxCount);
|
|
default: return range_t(0, 0);
|
|
}
|
|
}
|
|
|
|
// Return the size of a type in 32-bit words. This currently only
|
|
// handles ints and floats, and is only invoked by queries which must be
|
|
// integer types. If ever needed, it can be generalized.
|
|
unsigned spirvbin_t::typeSizeInWords(spv::Id id) const
|
|
{
|
|
const unsigned typeStart = idPos(id);
|
|
const spv::Op opCode = asOpCode(typeStart);
|
|
|
|
if (errorLatch)
|
|
return 0;
|
|
|
|
switch (opCode) {
|
|
case spv::OpTypeInt: // fall through...
|
|
case spv::OpTypeFloat: return (spv[typeStart+2]+31)/32;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// Looks up the type of a given const or variable ID, and
|
|
// returns its size in 32-bit words.
|
|
unsigned spirvbin_t::idTypeSizeInWords(spv::Id id) const
|
|
{
|
|
const auto tid_it = idTypeSizeMap.find(id);
|
|
if (tid_it == idTypeSizeMap.end()) {
|
|
error("type size for ID not found");
|
|
return 0;
|
|
}
|
|
|
|
return tid_it->second;
|
|
}
|
|
|
|
// Is this an opcode we should remove when using --strip?
|
|
bool spirvbin_t::isStripOp(spv::Op opCode) const
|
|
{
|
|
switch (opCode) {
|
|
case spv::OpSource:
|
|
case spv::OpSourceExtension:
|
|
case spv::OpName:
|
|
case spv::OpMemberName:
|
|
case spv::OpLine: return true;
|
|
default: return false;
|
|
}
|
|
}
|
|
|
|
// Return true if this opcode is flow control
|
|
bool spirvbin_t::isFlowCtrl(spv::Op opCode) const
|
|
{
|
|
switch (opCode) {
|
|
case spv::OpBranchConditional:
|
|
case spv::OpBranch:
|
|
case spv::OpSwitch:
|
|
case spv::OpLoopMerge:
|
|
case spv::OpSelectionMerge:
|
|
case spv::OpLabel:
|
|
case spv::OpFunction:
|
|
case spv::OpFunctionEnd: return true;
|
|
default: return false;
|
|
}
|
|
}
|
|
|
|
// Return true if this opcode defines a type
|
|
bool spirvbin_t::isTypeOp(spv::Op opCode) const
|
|
{
|
|
switch (opCode) {
|
|
case spv::OpTypeVoid:
|
|
case spv::OpTypeBool:
|
|
case spv::OpTypeInt:
|
|
case spv::OpTypeFloat:
|
|
case spv::OpTypeVector:
|
|
case spv::OpTypeMatrix:
|
|
case spv::OpTypeImage:
|
|
case spv::OpTypeSampler:
|
|
case spv::OpTypeArray:
|
|
case spv::OpTypeRuntimeArray:
|
|
case spv::OpTypeStruct:
|
|
case spv::OpTypeOpaque:
|
|
case spv::OpTypePointer:
|
|
case spv::OpTypeFunction:
|
|
case spv::OpTypeEvent:
|
|
case spv::OpTypeDeviceEvent:
|
|
case spv::OpTypeReserveId:
|
|
case spv::OpTypeQueue:
|
|
case spv::OpTypeSampledImage:
|
|
case spv::OpTypePipe: return true;
|
|
default: return false;
|
|
}
|
|
}
|
|
|
|
// Return true if this opcode defines a constant
|
|
bool spirvbin_t::isConstOp(spv::Op opCode) const
|
|
{
|
|
switch (opCode) {
|
|
case spv::OpConstantSampler:
|
|
error("unimplemented constant type");
|
|
return true;
|
|
|
|
case spv::OpConstantNull:
|
|
case spv::OpConstantTrue:
|
|
case spv::OpConstantFalse:
|
|
case spv::OpConstantComposite:
|
|
case spv::OpConstant:
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
const auto inst_fn_nop = [](spv::Op, unsigned) { return false; };
|
|
const auto op_fn_nop = [](spv::Id&) { };
|
|
|
|
// g++ doesn't like these defined in the class proper in an anonymous namespace.
|
|
// Dunno why. Also MSVC doesn't like the constexpr keyword. Also dunno why.
|
|
// Defining them externally seems to please both compilers, so, here they are.
|
|
const spv::Id spirvbin_t::unmapped = spv::Id(-10000);
|
|
const spv::Id spirvbin_t::unused = spv::Id(-10001);
|
|
const int spirvbin_t::header_size = 5;
|
|
|
|
spv::Id spirvbin_t::nextUnusedId(spv::Id id)
|
|
{
|
|
while (isNewIdMapped(id)) // search for an unused ID
|
|
++id;
|
|
|
|
return id;
|
|
}
|
|
|
|
spv::Id spirvbin_t::localId(spv::Id id, spv::Id newId)
|
|
{
|
|
//assert(id != spv::NoResult && newId != spv::NoResult);
|
|
|
|
if (id > bound()) {
|
|
error(std::string("ID out of range: ") + std::to_string(id));
|
|
return spirvbin_t::unused;
|
|
}
|
|
|
|
if (id >= idMapL.size())
|
|
idMapL.resize(id+1, unused);
|
|
|
|
if (newId != unmapped && newId != unused) {
|
|
if (isOldIdUnused(id)) {
|
|
error(std::string("ID unused in module: ") + std::to_string(id));
|
|
return spirvbin_t::unused;
|
|
}
|
|
|
|
if (!isOldIdUnmapped(id)) {
|
|
error(std::string("ID already mapped: ") + std::to_string(id) + " -> "
|
|
+ std::to_string(localId(id)));
|
|
|
|
return spirvbin_t::unused;
|
|
}
|
|
|
|
if (isNewIdMapped(newId)) {
|
|
error(std::string("ID already used in module: ") + std::to_string(newId));
|
|
return spirvbin_t::unused;
|
|
}
|
|
|
|
msg(4, 4, std::string("map: ") + std::to_string(id) + " -> " + std::to_string(newId));
|
|
setMapped(newId);
|
|
largestNewId = std::max(largestNewId, newId);
|
|
}
|
|
|
|
return idMapL[id] = newId;
|
|
}
|
|
|
|
// Parse a literal string from the SPIR binary and return it as an std::string
|
|
// Due to C++11 RValue references, this doesn't copy the result string.
|
|
std::string spirvbin_t::literalString(unsigned word) const
|
|
{
|
|
std::string literal;
|
|
const spirword_t * pos = spv.data() + word;
|
|
|
|
literal.reserve(16);
|
|
|
|
do {
|
|
spirword_t word = *pos;
|
|
for (int i = 0; i < 4; i++) {
|
|
char c = word & 0xff;
|
|
if (c == '\0')
|
|
return literal;
|
|
literal += c;
|
|
word >>= 8;
|
|
}
|
|
pos++;
|
|
} while (true);
|
|
}
|
|
|
|
void spirvbin_t::applyMap()
|
|
{
|
|
msg(3, 2, std::string("Applying map: "));
|
|
|
|
// Map local IDs through the ID map
|
|
process(inst_fn_nop, // ignore instructions
|
|
[this](spv::Id& id) {
|
|
id = localId(id);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
assert(id != unused && id != unmapped);
|
|
}
|
|
);
|
|
}
|
|
|
|
// Find free IDs for anything we haven't mapped
|
|
void spirvbin_t::mapRemainder()
|
|
{
|
|
msg(3, 2, std::string("Remapping remainder: "));
|
|
|
|
spv::Id unusedId = 1; // can't use 0: that's NoResult
|
|
spirword_t maxBound = 0;
|
|
|
|
for (spv::Id id = 0; id < idMapL.size(); ++id) {
|
|
if (isOldIdUnused(id))
|
|
continue;
|
|
|
|
// Find a new mapping for any used but unmapped IDs
|
|
if (isOldIdUnmapped(id)) {
|
|
localId(id, unusedId = nextUnusedId(unusedId));
|
|
if (errorLatch)
|
|
return;
|
|
}
|
|
|
|
if (isOldIdUnmapped(id)) {
|
|
error(std::string("old ID not mapped: ") + std::to_string(id));
|
|
return;
|
|
}
|
|
|
|
// Track max bound
|
|
maxBound = std::max(maxBound, localId(id) + 1);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
}
|
|
|
|
bound(maxBound); // reset header ID bound to as big as it now needs to be
|
|
}
|
|
|
|
// Mark debug instructions for stripping
|
|
void spirvbin_t::stripDebug()
|
|
{
|
|
// Strip instructions in the stripOp set: debug info.
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
// remember opcodes we want to strip later
|
|
if (isStripOp(opCode))
|
|
stripInst(start);
|
|
return true;
|
|
},
|
|
op_fn_nop);
|
|
}
|
|
|
|
// Mark instructions that refer to now-removed IDs for stripping
|
|
void spirvbin_t::stripDeadRefs()
|
|
{
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
// strip opcodes pointing to removed data
|
|
switch (opCode) {
|
|
case spv::OpName:
|
|
case spv::OpMemberName:
|
|
case spv::OpDecorate:
|
|
case spv::OpMemberDecorate:
|
|
if (idPosR.find(asId(start+1)) == idPosR.end())
|
|
stripInst(start);
|
|
break;
|
|
default:
|
|
break; // leave it alone
|
|
}
|
|
|
|
return true;
|
|
},
|
|
op_fn_nop);
|
|
|
|
strip();
|
|
}
|
|
|
|
// Update local maps of ID, type, etc positions
|
|
void spirvbin_t::buildLocalMaps()
|
|
{
|
|
msg(2, 2, std::string("build local maps: "));
|
|
|
|
mapped.clear();
|
|
idMapL.clear();
|
|
// preserve nameMap, so we don't clear that.
|
|
fnPos.clear();
|
|
fnCalls.clear();
|
|
typeConstPos.clear();
|
|
idPosR.clear();
|
|
entryPoint = spv::NoResult;
|
|
largestNewId = 0;
|
|
|
|
idMapL.resize(bound(), unused);
|
|
|
|
int fnStart = 0;
|
|
spv::Id fnRes = spv::NoResult;
|
|
|
|
// build local Id and name maps
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
unsigned word = start+1;
|
|
spv::Id typeId = spv::NoResult;
|
|
|
|
if (spv::InstructionDesc[opCode].hasType())
|
|
typeId = asId(word++);
|
|
|
|
// If there's a result ID, remember the size of its type
|
|
if (spv::InstructionDesc[opCode].hasResult()) {
|
|
const spv::Id resultId = asId(word++);
|
|
idPosR[resultId] = start;
|
|
|
|
if (typeId != spv::NoResult) {
|
|
const unsigned idTypeSize = typeSizeInWords(typeId);
|
|
|
|
if (errorLatch)
|
|
return false;
|
|
|
|
if (idTypeSize != 0)
|
|
idTypeSizeMap[resultId] = idTypeSize;
|
|
}
|
|
}
|
|
|
|
if (opCode == spv::Op::OpName) {
|
|
const spv::Id target = asId(start+1);
|
|
const std::string name = literalString(start+2);
|
|
nameMap[name] = target;
|
|
|
|
} else if (opCode == spv::Op::OpFunctionCall) {
|
|
++fnCalls[asId(start + 3)];
|
|
} else if (opCode == spv::Op::OpEntryPoint) {
|
|
entryPoint = asId(start + 2);
|
|
} else if (opCode == spv::Op::OpFunction) {
|
|
if (fnStart != 0) {
|
|
error("nested function found");
|
|
return false;
|
|
}
|
|
|
|
fnStart = start;
|
|
fnRes = asId(start + 2);
|
|
} else if (opCode == spv::Op::OpFunctionEnd) {
|
|
assert(fnRes != spv::NoResult);
|
|
if (fnStart == 0) {
|
|
error("function end without function start");
|
|
return false;
|
|
}
|
|
|
|
fnPos[fnRes] = range_t(fnStart, start + asWordCount(start));
|
|
fnStart = 0;
|
|
} else if (isConstOp(opCode)) {
|
|
if (errorLatch)
|
|
return false;
|
|
|
|
assert(asId(start + 2) != spv::NoResult);
|
|
typeConstPos.insert(start);
|
|
} else if (isTypeOp(opCode)) {
|
|
assert(asId(start + 1) != spv::NoResult);
|
|
typeConstPos.insert(start);
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
[this](spv::Id& id) { localId(id, unmapped); }
|
|
);
|
|
}
|
|
|
|
// Validate the SPIR header
|
|
void spirvbin_t::validate() const
|
|
{
|
|
msg(2, 2, std::string("validating: "));
|
|
|
|
if (spv.size() < header_size) {
|
|
error("file too short: ");
|
|
return;
|
|
}
|
|
|
|
if (magic() != spv::MagicNumber) {
|
|
error("bad magic number");
|
|
return;
|
|
}
|
|
|
|
// field 1 = version
|
|
// field 2 = generator magic
|
|
// field 3 = result <id> bound
|
|
|
|
if (schemaNum() != 0) {
|
|
error("bad schema, must be 0");
|
|
return;
|
|
}
|
|
}
|
|
|
|
int spirvbin_t::processInstruction(unsigned word, instfn_t instFn, idfn_t idFn)
|
|
{
|
|
const auto instructionStart = word;
|
|
const unsigned wordCount = asWordCount(instructionStart);
|
|
const int nextInst = word++ + wordCount;
|
|
spv::Op opCode = asOpCode(instructionStart);
|
|
|
|
if (nextInst > int(spv.size())) {
|
|
error("spir instruction terminated too early");
|
|
return -1;
|
|
}
|
|
|
|
// Base for computing number of operands; will be updated as more is learned
|
|
unsigned numOperands = wordCount - 1;
|
|
|
|
if (instFn(opCode, instructionStart))
|
|
return nextInst;
|
|
|
|
// Read type and result ID from instruction desc table
|
|
if (spv::InstructionDesc[opCode].hasType()) {
|
|
idFn(asId(word++));
|
|
--numOperands;
|
|
}
|
|
|
|
if (spv::InstructionDesc[opCode].hasResult()) {
|
|
idFn(asId(word++));
|
|
--numOperands;
|
|
}
|
|
|
|
// Extended instructions: currently, assume everything is an ID.
|
|
// TODO: add whatever data we need for exceptions to that
|
|
if (opCode == spv::OpExtInst) {
|
|
|
|
idFn(asId(word)); // Instruction set is an ID that also needs to be mapped
|
|
|
|
word += 2; // instruction set, and instruction from set
|
|
numOperands -= 2;
|
|
|
|
for (unsigned op=0; op < numOperands; ++op)
|
|
idFn(asId(word++)); // ID
|
|
|
|
return nextInst;
|
|
}
|
|
|
|
// Circular buffer so we can look back at previous unmapped values during the mapping pass.
|
|
static const unsigned idBufferSize = 4;
|
|
spv::Id idBuffer[idBufferSize];
|
|
unsigned idBufferPos = 0;
|
|
|
|
// Store IDs from instruction in our map
|
|
for (int op = 0; numOperands > 0; ++op, --numOperands) {
|
|
// SpecConstantOp is special: it includes the operands of another opcode which is
|
|
// given as a literal in the 3rd word. We will switch over to pretending that the
|
|
// opcode being processed is the literal opcode value of the SpecConstantOp. See the
|
|
// SPIRV spec for details. This way we will handle IDs and literals as appropriate for
|
|
// the embedded op.
|
|
if (opCode == spv::OpSpecConstantOp) {
|
|
if (op == 0) {
|
|
opCode = asOpCode(word++); // this is the opcode embedded in the SpecConstantOp.
|
|
--numOperands;
|
|
}
|
|
}
|
|
|
|
switch (spv::InstructionDesc[opCode].operands.getClass(op)) {
|
|
case spv::OperandId:
|
|
case spv::OperandScope:
|
|
case spv::OperandMemorySemantics:
|
|
idBuffer[idBufferPos] = asId(word);
|
|
idBufferPos = (idBufferPos + 1) % idBufferSize;
|
|
idFn(asId(word++));
|
|
break;
|
|
|
|
case spv::OperandVariableIds:
|
|
for (unsigned i = 0; i < numOperands; ++i)
|
|
idFn(asId(word++));
|
|
return nextInst;
|
|
|
|
case spv::OperandVariableLiterals:
|
|
// for clarity
|
|
// if (opCode == spv::OpDecorate && asDecoration(word - 1) == spv::DecorationBuiltIn) {
|
|
// ++word;
|
|
// --numOperands;
|
|
// }
|
|
// word += numOperands;
|
|
return nextInst;
|
|
|
|
case spv::OperandVariableLiteralId: {
|
|
if (opCode == OpSwitch) {
|
|
// word-2 is the position of the selector ID. OpSwitch Literals match its type.
|
|
// In case the IDs are currently being remapped, we get the word[-2] ID from
|
|
// the circular idBuffer.
|
|
const unsigned literalSizePos = (idBufferPos+idBufferSize-2) % idBufferSize;
|
|
const unsigned literalSize = idTypeSizeInWords(idBuffer[literalSizePos]);
|
|
const unsigned numLiteralIdPairs = (nextInst-word) / (1+literalSize);
|
|
|
|
if (errorLatch)
|
|
return -1;
|
|
|
|
for (unsigned arg=0; arg<numLiteralIdPairs; ++arg) {
|
|
word += literalSize; // literal
|
|
idFn(asId(word++)); // label
|
|
}
|
|
} else {
|
|
assert(0); // currentely, only OpSwitch uses OperandVariableLiteralId
|
|
}
|
|
|
|
return nextInst;
|
|
}
|
|
|
|
case spv::OperandLiteralString: {
|
|
const int stringWordCount = literalStringWords(literalString(word));
|
|
word += stringWordCount;
|
|
numOperands -= (stringWordCount-1); // -1 because for() header post-decrements
|
|
break;
|
|
}
|
|
|
|
case spv::OperandVariableLiteralStrings:
|
|
return nextInst;
|
|
|
|
// Execution mode might have extra literal operands. Skip them.
|
|
case spv::OperandExecutionMode:
|
|
return nextInst;
|
|
|
|
// Single word operands we simply ignore, as they hold no IDs
|
|
case spv::OperandLiteralNumber:
|
|
case spv::OperandSource:
|
|
case spv::OperandExecutionModel:
|
|
case spv::OperandAddressing:
|
|
case spv::OperandMemory:
|
|
case spv::OperandStorage:
|
|
case spv::OperandDimensionality:
|
|
case spv::OperandSamplerAddressingMode:
|
|
case spv::OperandSamplerFilterMode:
|
|
case spv::OperandSamplerImageFormat:
|
|
case spv::OperandImageChannelOrder:
|
|
case spv::OperandImageChannelDataType:
|
|
case spv::OperandImageOperands:
|
|
case spv::OperandFPFastMath:
|
|
case spv::OperandFPRoundingMode:
|
|
case spv::OperandLinkageType:
|
|
case spv::OperandAccessQualifier:
|
|
case spv::OperandFuncParamAttr:
|
|
case spv::OperandDecoration:
|
|
case spv::OperandBuiltIn:
|
|
case spv::OperandSelect:
|
|
case spv::OperandLoop:
|
|
case spv::OperandFunction:
|
|
case spv::OperandMemoryAccess:
|
|
case spv::OperandGroupOperation:
|
|
case spv::OperandKernelEnqueueFlags:
|
|
case spv::OperandKernelProfilingInfo:
|
|
case spv::OperandCapability:
|
|
++word;
|
|
break;
|
|
|
|
default:
|
|
assert(0 && "Unhandled Operand Class");
|
|
break;
|
|
}
|
|
}
|
|
|
|
return nextInst;
|
|
}
|
|
|
|
// Make a pass over all the instructions and process them given appropriate functions
|
|
spirvbin_t& spirvbin_t::process(instfn_t instFn, idfn_t idFn, unsigned begin, unsigned end)
|
|
{
|
|
// For efficiency, reserve name map space. It can grow if needed.
|
|
nameMap.reserve(32);
|
|
|
|
// If begin or end == 0, use defaults
|
|
begin = (begin == 0 ? header_size : begin);
|
|
end = (end == 0 ? unsigned(spv.size()) : end);
|
|
|
|
// basic parsing and InstructionDesc table borrowed from SpvDisassemble.cpp...
|
|
unsigned nextInst = unsigned(spv.size());
|
|
|
|
for (unsigned word = begin; word < end; word = nextInst) {
|
|
nextInst = processInstruction(word, instFn, idFn);
|
|
|
|
if (errorLatch)
|
|
return *this;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
// Apply global name mapping to a single module
|
|
void spirvbin_t::mapNames()
|
|
{
|
|
static const std::uint32_t softTypeIdLimit = 3011; // small prime. TODO: get from options
|
|
static const std::uint32_t firstMappedID = 3019; // offset into ID space
|
|
|
|
for (const auto& name : nameMap) {
|
|
std::uint32_t hashval = 1911;
|
|
for (const char c : name.first)
|
|
hashval = hashval * 1009 + c;
|
|
|
|
if (isOldIdUnmapped(name.second)) {
|
|
localId(name.second, nextUnusedId(hashval % softTypeIdLimit + firstMappedID));
|
|
if (errorLatch)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Map fn contents to IDs of similar functions in other modules
|
|
void spirvbin_t::mapFnBodies()
|
|
{
|
|
static const std::uint32_t softTypeIdLimit = 19071; // small prime. TODO: get from options
|
|
static const std::uint32_t firstMappedID = 6203; // offset into ID space
|
|
|
|
// Initial approach: go through some high priority opcodes first and assign them
|
|
// hash values.
|
|
|
|
spv::Id fnId = spv::NoResult;
|
|
std::vector<unsigned> instPos;
|
|
instPos.reserve(unsigned(spv.size()) / 16); // initial estimate; can grow if needed.
|
|
|
|
// Build local table of instruction start positions
|
|
process(
|
|
[&](spv::Op, unsigned start) { instPos.push_back(start); return true; },
|
|
op_fn_nop);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
// Window size for context-sensitive canonicalization values
|
|
// Empirical best size from a single data set. TODO: Would be a good tunable.
|
|
// We essentially perform a little convolution around each instruction,
|
|
// to capture the flavor of nearby code, to hopefully match to similar
|
|
// code in other modules.
|
|
static const unsigned windowSize = 2;
|
|
|
|
for (unsigned entry = 0; entry < unsigned(instPos.size()); ++entry) {
|
|
const unsigned start = instPos[entry];
|
|
const spv::Op opCode = asOpCode(start);
|
|
|
|
if (opCode == spv::OpFunction)
|
|
fnId = asId(start + 2);
|
|
|
|
if (opCode == spv::OpFunctionEnd)
|
|
fnId = spv::NoResult;
|
|
|
|
if (fnId != spv::NoResult) { // if inside a function
|
|
if (spv::InstructionDesc[opCode].hasResult()) {
|
|
const unsigned word = start + (spv::InstructionDesc[opCode].hasType() ? 2 : 1);
|
|
const spv::Id resId = asId(word);
|
|
std::uint32_t hashval = fnId * 17; // small prime
|
|
|
|
for (unsigned i = entry-1; i >= entry-windowSize; --i) {
|
|
if (asOpCode(instPos[i]) == spv::OpFunction)
|
|
break;
|
|
hashval = hashval * 30103 + asOpCodeHash(instPos[i]); // 30103 = semiarbitrary prime
|
|
}
|
|
|
|
for (unsigned i = entry; i <= entry + windowSize; ++i) {
|
|
if (asOpCode(instPos[i]) == spv::OpFunctionEnd)
|
|
break;
|
|
hashval = hashval * 30103 + asOpCodeHash(instPos[i]); // 30103 = semiarbitrary prime
|
|
}
|
|
|
|
if (isOldIdUnmapped(resId)) {
|
|
localId(resId, nextUnusedId(hashval % softTypeIdLimit + firstMappedID));
|
|
if (errorLatch)
|
|
return;
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
spv::Op thisOpCode(spv::OpNop);
|
|
std::unordered_map<int, int> opCounter;
|
|
int idCounter(0);
|
|
fnId = spv::NoResult;
|
|
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
switch (opCode) {
|
|
case spv::OpFunction:
|
|
// Reset counters at each function
|
|
idCounter = 0;
|
|
opCounter.clear();
|
|
fnId = asId(start + 2);
|
|
break;
|
|
|
|
case spv::OpImageSampleImplicitLod:
|
|
case spv::OpImageSampleExplicitLod:
|
|
case spv::OpImageSampleDrefImplicitLod:
|
|
case spv::OpImageSampleDrefExplicitLod:
|
|
case spv::OpImageSampleProjImplicitLod:
|
|
case spv::OpImageSampleProjExplicitLod:
|
|
case spv::OpImageSampleProjDrefImplicitLod:
|
|
case spv::OpImageSampleProjDrefExplicitLod:
|
|
case spv::OpDot:
|
|
case spv::OpCompositeExtract:
|
|
case spv::OpCompositeInsert:
|
|
case spv::OpVectorShuffle:
|
|
case spv::OpLabel:
|
|
case spv::OpVariable:
|
|
|
|
case spv::OpAccessChain:
|
|
case spv::OpLoad:
|
|
case spv::OpStore:
|
|
case spv::OpCompositeConstruct:
|
|
case spv::OpFunctionCall:
|
|
++opCounter[opCode];
|
|
idCounter = 0;
|
|
thisOpCode = opCode;
|
|
break;
|
|
default:
|
|
thisOpCode = spv::OpNop;
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
[&](spv::Id& id) {
|
|
if (thisOpCode != spv::OpNop) {
|
|
++idCounter;
|
|
const std::uint32_t hashval =
|
|
// Explicitly cast operands to unsigned int to avoid integer
|
|
// promotion to signed int followed by integer overflow,
|
|
// which would result in undefined behavior.
|
|
static_cast<unsigned int>(opCounter[thisOpCode])
|
|
* thisOpCode
|
|
* 50047
|
|
+ idCounter
|
|
+ static_cast<unsigned int>(fnId) * 117;
|
|
|
|
if (isOldIdUnmapped(id))
|
|
localId(id, nextUnusedId(hashval % softTypeIdLimit + firstMappedID));
|
|
}
|
|
});
|
|
}
|
|
|
|
// EXPERIMENTAL: forward IO and uniform load/stores into operands
|
|
// This produces invalid Schema-0 SPIRV
|
|
void spirvbin_t::forwardLoadStores()
|
|
{
|
|
idset_t fnLocalVars; // set of function local vars
|
|
idmap_t idMap; // Map of load result IDs to what they load
|
|
|
|
// EXPERIMENTAL: Forward input and access chain loads into consumptions
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
// Add inputs and uniforms to the map
|
|
if ((opCode == spv::OpVariable && asWordCount(start) == 4) &&
|
|
(spv[start+3] == spv::StorageClassUniform ||
|
|
spv[start+3] == spv::StorageClassUniformConstant ||
|
|
spv[start+3] == spv::StorageClassInput))
|
|
fnLocalVars.insert(asId(start+2));
|
|
|
|
if (opCode == spv::OpAccessChain && fnLocalVars.count(asId(start+3)) > 0)
|
|
fnLocalVars.insert(asId(start+2));
|
|
|
|
if (opCode == spv::OpLoad && fnLocalVars.count(asId(start+3)) > 0) {
|
|
idMap[asId(start+2)] = asId(start+3);
|
|
stripInst(start);
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
[&](spv::Id& id) { if (idMap.find(id) != idMap.end()) id = idMap[id]; }
|
|
);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
// EXPERIMENTAL: Implicit output stores
|
|
fnLocalVars.clear();
|
|
idMap.clear();
|
|
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
// Add inputs and uniforms to the map
|
|
if ((opCode == spv::OpVariable && asWordCount(start) == 4) &&
|
|
(spv[start+3] == spv::StorageClassOutput))
|
|
fnLocalVars.insert(asId(start+2));
|
|
|
|
if (opCode == spv::OpStore && fnLocalVars.count(asId(start+1)) > 0) {
|
|
idMap[asId(start+2)] = asId(start+1);
|
|
stripInst(start);
|
|
}
|
|
|
|
return false;
|
|
},
|
|
op_fn_nop);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
process(
|
|
inst_fn_nop,
|
|
[&](spv::Id& id) { if (idMap.find(id) != idMap.end()) id = idMap[id]; }
|
|
);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
strip(); // strip out data we decided to eliminate
|
|
}
|
|
|
|
// optimize loads and stores
|
|
void spirvbin_t::optLoadStore()
|
|
{
|
|
idset_t fnLocalVars; // candidates for removal (only locals)
|
|
idmap_t idMap; // Map of load result IDs to what they load
|
|
blockmap_t blockMap; // Map of IDs to blocks they first appear in
|
|
int blockNum = 0; // block count, to avoid crossing flow control
|
|
|
|
// Find all the function local pointers stored at most once, and not via access chains
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
const int wordCount = asWordCount(start);
|
|
|
|
// Count blocks, so we can avoid crossing flow control
|
|
if (isFlowCtrl(opCode))
|
|
++blockNum;
|
|
|
|
// Add local variables to the map
|
|
if ((opCode == spv::OpVariable && spv[start+3] == spv::StorageClassFunction && asWordCount(start) == 4)) {
|
|
fnLocalVars.insert(asId(start+2));
|
|
return true;
|
|
}
|
|
|
|
// Ignore process vars referenced via access chain
|
|
if ((opCode == spv::OpAccessChain || opCode == spv::OpInBoundsAccessChain) && fnLocalVars.count(asId(start+3)) > 0) {
|
|
fnLocalVars.erase(asId(start+3));
|
|
idMap.erase(asId(start+3));
|
|
return true;
|
|
}
|
|
|
|
if (opCode == spv::OpLoad && fnLocalVars.count(asId(start+3)) > 0) {
|
|
const spv::Id varId = asId(start+3);
|
|
|
|
// Avoid loads before stores
|
|
if (idMap.find(varId) == idMap.end()) {
|
|
fnLocalVars.erase(varId);
|
|
idMap.erase(varId);
|
|
}
|
|
|
|
// don't do for volatile references
|
|
if (wordCount > 4 && (spv[start+4] & spv::MemoryAccessVolatileMask)) {
|
|
fnLocalVars.erase(varId);
|
|
idMap.erase(varId);
|
|
}
|
|
|
|
// Handle flow control
|
|
if (blockMap.find(varId) == blockMap.end()) {
|
|
blockMap[varId] = blockNum; // track block we found it in.
|
|
} else if (blockMap[varId] != blockNum) {
|
|
fnLocalVars.erase(varId); // Ignore if crosses flow control
|
|
idMap.erase(varId);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
if (opCode == spv::OpStore && fnLocalVars.count(asId(start+1)) > 0) {
|
|
const spv::Id varId = asId(start+1);
|
|
|
|
if (idMap.find(varId) == idMap.end()) {
|
|
idMap[varId] = asId(start+2);
|
|
} else {
|
|
// Remove if it has more than one store to the same pointer
|
|
fnLocalVars.erase(varId);
|
|
idMap.erase(varId);
|
|
}
|
|
|
|
// don't do for volatile references
|
|
if (wordCount > 3 && (spv[start+3] & spv::MemoryAccessVolatileMask)) {
|
|
fnLocalVars.erase(asId(start+3));
|
|
idMap.erase(asId(start+3));
|
|
}
|
|
|
|
// Handle flow control
|
|
if (blockMap.find(varId) == blockMap.end()) {
|
|
blockMap[varId] = blockNum; // track block we found it in.
|
|
} else if (blockMap[varId] != blockNum) {
|
|
fnLocalVars.erase(varId); // Ignore if crosses flow control
|
|
idMap.erase(varId);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
// If local var id used anywhere else, don't eliminate
|
|
[&](spv::Id& id) {
|
|
if (fnLocalVars.count(id) > 0) {
|
|
fnLocalVars.erase(id);
|
|
idMap.erase(id);
|
|
}
|
|
}
|
|
);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
if (opCode == spv::OpLoad && fnLocalVars.count(asId(start+3)) > 0)
|
|
idMap[asId(start+2)] = idMap[asId(start+3)];
|
|
return false;
|
|
},
|
|
op_fn_nop);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
// Chase replacements to their origins, in case there is a chain such as:
|
|
// 2 = store 1
|
|
// 3 = load 2
|
|
// 4 = store 3
|
|
// 5 = load 4
|
|
// We want to replace uses of 5 with 1.
|
|
for (const auto& idPair : idMap) {
|
|
spv::Id id = idPair.first;
|
|
while (idMap.find(id) != idMap.end()) // Chase to end of chain
|
|
id = idMap[id];
|
|
|
|
idMap[idPair.first] = id; // replace with final result
|
|
}
|
|
|
|
// Remove the load/store/variables for the ones we've discovered
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
if ((opCode == spv::OpLoad && fnLocalVars.count(asId(start+3)) > 0) ||
|
|
(opCode == spv::OpStore && fnLocalVars.count(asId(start+1)) > 0) ||
|
|
(opCode == spv::OpVariable && fnLocalVars.count(asId(start+2)) > 0)) {
|
|
|
|
stripInst(start);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
[&](spv::Id& id) {
|
|
if (idMap.find(id) != idMap.end()) id = idMap[id];
|
|
}
|
|
);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
strip(); // strip out data we decided to eliminate
|
|
}
|
|
|
|
// remove bodies of uncalled functions
|
|
void spirvbin_t::dceFuncs()
|
|
{
|
|
msg(3, 2, std::string("Removing Dead Functions: "));
|
|
|
|
// TODO: There are more efficient ways to do this.
|
|
bool changed = true;
|
|
|
|
while (changed) {
|
|
changed = false;
|
|
|
|
for (auto fn = fnPos.begin(); fn != fnPos.end(); ) {
|
|
if (fn->first == entryPoint) { // don't DCE away the entry point!
|
|
++fn;
|
|
continue;
|
|
}
|
|
|
|
const auto call_it = fnCalls.find(fn->first);
|
|
|
|
if (call_it == fnCalls.end() || call_it->second == 0) {
|
|
changed = true;
|
|
stripRange.push_back(fn->second);
|
|
|
|
// decrease counts of called functions
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
if (opCode == spv::Op::OpFunctionCall) {
|
|
const auto call_it = fnCalls.find(asId(start + 3));
|
|
if (call_it != fnCalls.end()) {
|
|
if (--call_it->second <= 0)
|
|
fnCalls.erase(call_it);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
},
|
|
op_fn_nop,
|
|
fn->second.first,
|
|
fn->second.second);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
fn = fnPos.erase(fn);
|
|
} else ++fn;
|
|
}
|
|
}
|
|
}
|
|
|
|
// remove unused function variables + decorations
|
|
void spirvbin_t::dceVars()
|
|
{
|
|
msg(3, 2, std::string("DCE Vars: "));
|
|
|
|
std::unordered_map<spv::Id, int> varUseCount;
|
|
|
|
// Count function variable use
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
if (opCode == spv::OpVariable) {
|
|
++varUseCount[asId(start+2)];
|
|
return true;
|
|
} else if (opCode == spv::OpEntryPoint) {
|
|
const int wordCount = asWordCount(start);
|
|
for (int i = 4; i < wordCount; i++) {
|
|
++varUseCount[asId(start+i)];
|
|
}
|
|
return true;
|
|
} else
|
|
return false;
|
|
},
|
|
|
|
[&](spv::Id& id) { if (varUseCount[id]) ++varUseCount[id]; }
|
|
);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
// Remove single-use function variables + associated decorations and names
|
|
process(
|
|
[&](spv::Op opCode, unsigned start) {
|
|
spv::Id id = spv::NoResult;
|
|
if (opCode == spv::OpVariable)
|
|
id = asId(start+2);
|
|
if (opCode == spv::OpDecorate || opCode == spv::OpName)
|
|
id = asId(start+1);
|
|
|
|
if (id != spv::NoResult && varUseCount[id] == 1)
|
|
stripInst(start);
|
|
|
|
return true;
|
|
},
|
|
op_fn_nop);
|
|
}
|
|
|
|
// remove unused types
|
|
void spirvbin_t::dceTypes()
|
|
{
|
|
std::vector<bool> isType(bound(), false);
|
|
|
|
// for speed, make O(1) way to get to type query (map is log(n))
|
|
for (const auto typeStart : typeConstPos)
|
|
isType[asTypeConstId(typeStart)] = true;
|
|
|
|
std::unordered_map<spv::Id, int> typeUseCount;
|
|
|
|
// This is not the most efficient algorithm, but this is an offline tool, and
|
|
// it's easy to write this way. Can be improved opportunistically if needed.
|
|
bool changed = true;
|
|
while (changed) {
|
|
changed = false;
|
|
strip();
|
|
typeUseCount.clear();
|
|
|
|
// Count total type usage
|
|
process(inst_fn_nop,
|
|
[&](spv::Id& id) { if (isType[id]) ++typeUseCount[id]; }
|
|
);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
// Remove single reference types
|
|
for (const auto typeStart : typeConstPos) {
|
|
const spv::Id typeId = asTypeConstId(typeStart);
|
|
if (typeUseCount[typeId] == 1) {
|
|
changed = true;
|
|
--typeUseCount[typeId];
|
|
stripInst(typeStart);
|
|
}
|
|
}
|
|
|
|
if (errorLatch)
|
|
return;
|
|
}
|
|
}
|
|
|
|
#ifdef NOTDEF
|
|
bool spirvbin_t::matchType(const spirvbin_t::globaltypes_t& globalTypes, spv::Id lt, spv::Id gt) const
|
|
{
|
|
// Find the local type id "lt" and global type id "gt"
|
|
const auto lt_it = typeConstPosR.find(lt);
|
|
if (lt_it == typeConstPosR.end())
|
|
return false;
|
|
|
|
const auto typeStart = lt_it->second;
|
|
|
|
// Search for entry in global table
|
|
const auto gtype = globalTypes.find(gt);
|
|
if (gtype == globalTypes.end())
|
|
return false;
|
|
|
|
const auto& gdata = gtype->second;
|
|
|
|
// local wordcount and opcode
|
|
const int wordCount = asWordCount(typeStart);
|
|
const spv::Op opCode = asOpCode(typeStart);
|
|
|
|
// no type match if opcodes don't match, or operand count doesn't match
|
|
if (opCode != opOpCode(gdata[0]) || wordCount != opWordCount(gdata[0]))
|
|
return false;
|
|
|
|
const unsigned numOperands = wordCount - 2; // all types have a result
|
|
|
|
const auto cmpIdRange = [&](range_t range) {
|
|
for (int x=range.first; x<std::min(range.second, wordCount); ++x)
|
|
if (!matchType(globalTypes, asId(typeStart+x), gdata[x]))
|
|
return false;
|
|
return true;
|
|
};
|
|
|
|
const auto cmpConst = [&]() { return cmpIdRange(constRange(opCode)); };
|
|
const auto cmpSubType = [&]() { return cmpIdRange(typeRange(opCode)); };
|
|
|
|
// Compare literals in range [start,end)
|
|
const auto cmpLiteral = [&]() {
|
|
const auto range = literalRange(opCode);
|
|
return std::equal(spir.begin() + typeStart + range.first,
|
|
spir.begin() + typeStart + std::min(range.second, wordCount),
|
|
gdata.begin() + range.first);
|
|
};
|
|
|
|
assert(isTypeOp(opCode) || isConstOp(opCode));
|
|
|
|
switch (opCode) {
|
|
case spv::OpTypeOpaque: // TODO: disable until we compare the literal strings.
|
|
case spv::OpTypeQueue: return false;
|
|
case spv::OpTypeEvent: // fall through...
|
|
case spv::OpTypeDeviceEvent: // ...
|
|
case spv::OpTypeReserveId: return false;
|
|
// for samplers, we don't handle the optional parameters yet
|
|
case spv::OpTypeSampler: return cmpLiteral() && cmpConst() && cmpSubType() && wordCount == 8;
|
|
default: return cmpLiteral() && cmpConst() && cmpSubType();
|
|
}
|
|
}
|
|
|
|
// Look for an equivalent type in the globalTypes map
|
|
spv::Id spirvbin_t::findType(const spirvbin_t::globaltypes_t& globalTypes, spv::Id lt) const
|
|
{
|
|
// Try a recursive type match on each in turn, and return a match if we find one
|
|
for (const auto& gt : globalTypes)
|
|
if (matchType(globalTypes, lt, gt.first))
|
|
return gt.first;
|
|
|
|
return spv::NoType;
|
|
}
|
|
#endif // NOTDEF
|
|
|
|
// Return start position in SPV of given Id. error if not found.
|
|
unsigned spirvbin_t::idPos(spv::Id id) const
|
|
{
|
|
const auto tid_it = idPosR.find(id);
|
|
if (tid_it == idPosR.end()) {
|
|
error("ID not found");
|
|
return 0;
|
|
}
|
|
|
|
return tid_it->second;
|
|
}
|
|
|
|
// Hash types to canonical values. This can return ID collisions (it's a bit
|
|
// inevitable): it's up to the caller to handle that gracefully.
|
|
std::uint32_t spirvbin_t::hashType(unsigned typeStart) const
|
|
{
|
|
const unsigned wordCount = asWordCount(typeStart);
|
|
const spv::Op opCode = asOpCode(typeStart);
|
|
|
|
switch (opCode) {
|
|
case spv::OpTypeVoid: return 0;
|
|
case spv::OpTypeBool: return 1;
|
|
case spv::OpTypeInt: return 3 + (spv[typeStart+3]);
|
|
case spv::OpTypeFloat: return 5;
|
|
case spv::OpTypeVector:
|
|
return 6 + hashType(idPos(spv[typeStart+2])) * (spv[typeStart+3] - 1);
|
|
case spv::OpTypeMatrix:
|
|
return 30 + hashType(idPos(spv[typeStart+2])) * (spv[typeStart+3] - 1);
|
|
case spv::OpTypeImage:
|
|
return 120 + hashType(idPos(spv[typeStart+2])) +
|
|
spv[typeStart+3] + // dimensionality
|
|
spv[typeStart+4] * 8 * 16 + // depth
|
|
spv[typeStart+5] * 4 * 16 + // arrayed
|
|
spv[typeStart+6] * 2 * 16 + // multisampled
|
|
spv[typeStart+7] * 1 * 16; // format
|
|
case spv::OpTypeSampler:
|
|
return 500;
|
|
case spv::OpTypeSampledImage:
|
|
return 502;
|
|
case spv::OpTypeArray:
|
|
return 501 + hashType(idPos(spv[typeStart+2])) * spv[typeStart+3];
|
|
case spv::OpTypeRuntimeArray:
|
|
return 5000 + hashType(idPos(spv[typeStart+2]));
|
|
case spv::OpTypeStruct:
|
|
{
|
|
std::uint32_t hash = 10000;
|
|
for (unsigned w=2; w < wordCount; ++w)
|
|
hash += w * hashType(idPos(spv[typeStart+w]));
|
|
return hash;
|
|
}
|
|
|
|
case spv::OpTypeOpaque: return 6000 + spv[typeStart+2];
|
|
case spv::OpTypePointer: return 100000 + hashType(idPos(spv[typeStart+3]));
|
|
case spv::OpTypeFunction:
|
|
{
|
|
std::uint32_t hash = 200000;
|
|
for (unsigned w=2; w < wordCount; ++w)
|
|
hash += w * hashType(idPos(spv[typeStart+w]));
|
|
return hash;
|
|
}
|
|
|
|
case spv::OpTypeEvent: return 300000;
|
|
case spv::OpTypeDeviceEvent: return 300001;
|
|
case spv::OpTypeReserveId: return 300002;
|
|
case spv::OpTypeQueue: return 300003;
|
|
case spv::OpTypePipe: return 300004;
|
|
case spv::OpConstantTrue: return 300007;
|
|
case spv::OpConstantFalse: return 300008;
|
|
case spv::OpConstantComposite:
|
|
{
|
|
std::uint32_t hash = 300011 + hashType(idPos(spv[typeStart+1]));
|
|
for (unsigned w=3; w < wordCount; ++w)
|
|
hash += w * hashType(idPos(spv[typeStart+w]));
|
|
return hash;
|
|
}
|
|
case spv::OpConstant:
|
|
{
|
|
std::uint32_t hash = 400011 + hashType(idPos(spv[typeStart+1]));
|
|
for (unsigned w=3; w < wordCount; ++w)
|
|
hash += w * spv[typeStart+w];
|
|
return hash;
|
|
}
|
|
case spv::OpConstantNull:
|
|
{
|
|
std::uint32_t hash = 500009 + hashType(idPos(spv[typeStart+1]));
|
|
return hash;
|
|
}
|
|
case spv::OpConstantSampler:
|
|
{
|
|
std::uint32_t hash = 600011 + hashType(idPos(spv[typeStart+1]));
|
|
for (unsigned w=3; w < wordCount; ++w)
|
|
hash += w * spv[typeStart+w];
|
|
return hash;
|
|
}
|
|
|
|
default:
|
|
error("unknown type opcode");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void spirvbin_t::mapTypeConst()
|
|
{
|
|
globaltypes_t globalTypeMap;
|
|
|
|
msg(3, 2, std::string("Remapping Consts & Types: "));
|
|
|
|
static const std::uint32_t softTypeIdLimit = 3011; // small prime. TODO: get from options
|
|
static const std::uint32_t firstMappedID = 8; // offset into ID space
|
|
|
|
for (auto& typeStart : typeConstPos) {
|
|
const spv::Id resId = asTypeConstId(typeStart);
|
|
const std::uint32_t hashval = hashType(typeStart);
|
|
|
|
if (errorLatch)
|
|
return;
|
|
|
|
if (isOldIdUnmapped(resId)) {
|
|
localId(resId, nextUnusedId(hashval % softTypeIdLimit + firstMappedID));
|
|
if (errorLatch)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Strip a single binary by removing ranges given in stripRange
|
|
void spirvbin_t::strip()
|
|
{
|
|
if (stripRange.empty()) // nothing to do
|
|
return;
|
|
|
|
// Sort strip ranges in order of traversal
|
|
std::sort(stripRange.begin(), stripRange.end());
|
|
|
|
// Allocate a new binary big enough to hold old binary
|
|
// We'll step this iterator through the strip ranges as we go through the binary
|
|
auto strip_it = stripRange.begin();
|
|
|
|
int strippedPos = 0;
|
|
for (unsigned word = 0; word < unsigned(spv.size()); ++word) {
|
|
while (strip_it != stripRange.end() && word >= strip_it->second)
|
|
++strip_it;
|
|
|
|
if (strip_it == stripRange.end() || word < strip_it->first || word >= strip_it->second)
|
|
spv[strippedPos++] = spv[word];
|
|
}
|
|
|
|
spv.resize(strippedPos);
|
|
stripRange.clear();
|
|
|
|
buildLocalMaps();
|
|
}
|
|
|
|
// Strip a single binary by removing ranges given in stripRange
|
|
void spirvbin_t::remap(std::uint32_t opts)
|
|
{
|
|
options = opts;
|
|
|
|
// Set up opcode tables from SpvDoc
|
|
spv::Parameterize();
|
|
|
|
validate(); // validate header
|
|
buildLocalMaps(); // build ID maps
|
|
|
|
msg(3, 4, std::string("ID bound: ") + std::to_string(bound()));
|
|
|
|
if (options & STRIP) stripDebug();
|
|
if (errorLatch) return;
|
|
|
|
strip(); // strip out data we decided to eliminate
|
|
if (errorLatch) return;
|
|
|
|
if (options & OPT_LOADSTORE) optLoadStore();
|
|
if (errorLatch) return;
|
|
|
|
if (options & OPT_FWD_LS) forwardLoadStores();
|
|
if (errorLatch) return;
|
|
|
|
if (options & DCE_FUNCS) dceFuncs();
|
|
if (errorLatch) return;
|
|
|
|
if (options & DCE_VARS) dceVars();
|
|
if (errorLatch) return;
|
|
|
|
if (options & DCE_TYPES) dceTypes();
|
|
if (errorLatch) return;
|
|
|
|
strip(); // strip out data we decided to eliminate
|
|
if (errorLatch) return;
|
|
|
|
stripDeadRefs(); // remove references to things we DCEed
|
|
if (errorLatch) return;
|
|
|
|
// after the last strip, we must clean any debug info referring to now-deleted data
|
|
|
|
if (options & MAP_TYPES) mapTypeConst();
|
|
if (errorLatch) return;
|
|
|
|
if (options & MAP_NAMES) mapNames();
|
|
if (errorLatch) return;
|
|
|
|
if (options & MAP_FUNCS) mapFnBodies();
|
|
if (errorLatch) return;
|
|
|
|
if (options & MAP_ALL) {
|
|
mapRemainder(); // map any unmapped IDs
|
|
if (errorLatch) return;
|
|
|
|
applyMap(); // Now remap each shader to the new IDs we've come up with
|
|
if (errorLatch) return;
|
|
}
|
|
}
|
|
|
|
// remap from a memory image
|
|
void spirvbin_t::remap(std::vector<std::uint32_t>& in_spv, std::uint32_t opts)
|
|
{
|
|
spv.swap(in_spv);
|
|
remap(opts);
|
|
spv.swap(in_spv);
|
|
}
|
|
|
|
} // namespace SPV
|
|
|
|
#endif // defined (use_cpp11)
|
|
|