refactor(shader): preserve native scalar memory operations

This commit is contained in:
nmzik
2026-08-19 09:37:43 +02:00
parent c236ba713d
commit 8063822243
10 changed files with 296 additions and 200 deletions
+4 -4
View File
@@ -14601,12 +14601,12 @@ TestCase ScalarMemoryLoadVariants() {
};
const Load s_loads[] = {
{0x00, 20, 0, 1}, {0x01, 21, 4, 2}, {0x02, 23, 12, 4},
{0x03, 27, 28, 8}, {0x04, 40, 60, 16},
{0x00, 20, 0, 1}, {0x01, 22, 4, 2}, {0x02, 24, 12, 4},
{0x03, 28, 28, 8}, {0x04, 36, 60, 16},
};
const Load s_buffer_loads[] = {
{0x08, 56, 0, 1}, {0x09, 57, 4, 2}, {0x0a, 59, 12, 4},
{0x0b, 63, 28, 8}, {0x0c, 71, 60, 16},
{0x08, 52, 0, 1}, {0x09, 54, 4, 2}, {0x0a, 56, 12, 4},
{0x0b, 60, 28, 8}, {0x0c, 68, 60, 16},
};
std::vector<u32> code;
+173 -114
View File
@@ -5497,121 +5497,77 @@ void TestGraphicsCreateInterpolantMapping() {
"interpolant identity tail was not filled");
}
void TestNewShaderRecompilerWideMemoryLowering() {
void TestNewShaderRecompilerNativeWideScalarMemoryIr() {
const uint32_t shader[] = {
EncodeSmem0(0x02, 4, 4),
0u, // s_load_dwordx4 s[4:7]
EncodeSmem0(0x0a, 8, 4),
0u, // s_buffer_load_dwordx4 s[8:11]
EncodeSmem0(0x09, 106, 4),
0u, // s_buffer_load_dwordx2 vcc_lo
EncodeMubuf0(0x0d, 16),
EncodeMubuf1(20, 0, 1), // buffer_load_dwordx2 v[20:21]
EncodeMubuf0(0x0f, 32),
EncodeMubuf1(24, 0, 1), // buffer_load_dwordx3 v[24:26]
EncodeMubuf0(0x0e, 48),
EncodeMubuf1(28, 0, 1), // buffer_load_dwordx4 v[28:31]
EncodeMubuf0(0x1d, 64),
EncodeMubuf1(32, 0, 1), // buffer_store_dwordx2 v[32:33]
EncodeMubuf0(0x1f, 80),
EncodeMubuf1(36, 0, 1), // buffer_store_dwordx3 v[36:38]
EncodeMubuf0(0x1e, 96),
EncodeMubuf1(40, 0, 1), // buffer_store_dwordx4 v[40:43]
EncodeMubuf0(0x08, 2),
EncodeMubuf1(44, 0, 1), // buffer_load_ubyte v44
EncodeMubuf0(0x0a, 4),
EncodeMubuf1(45, 0, 1), // buffer_load_ushort v45
EncodeFlat0(0x0c, 0, 4),
EncodeFlat1(50, 0x7d, 0, 1), // flat_load_dword
EncodeFlat0(0x0d, 1, 8),
EncodeFlat1(52, 0x7d, 0, 1), // scratch_load_dwordx2
EncodeFlat0(0x0e, 2, 12),
EncodeFlat1(56, 0x7d, 0, 1), // global_load_dwordx4
0xbf810000u,
EncodeSmem0(0x00, 0, 4), 125u << 25u,
EncodeSmem0(0x01, 2, 4), 125u << 25u,
EncodeSmem0(0x02, 4, 4), 125u << 25u,
EncodeSmem0(0x03, 8, 4), 125u << 25u,
EncodeSmem0(0x04, 92, 4), 125u << 25u,
EncodeSmem0(0x08, 32, 4), 125u << 25u,
EncodeSmem0(0x09, 106, 4), 125u << 25u,
EncodeSmem0(0x0a, 36, 4), 125u << 25u,
EncodeSmem0(0x0b, 40, 4), 125u << 25u,
EncodeSmem0(0x0c, 48, 4), 125u << 25u,
EncodeSopp(0x01),
};
auto options = MakeCompileOptions(ShaderType::Compute);
options.dump_ir = true;
options.flat_memory_base = 0;
ShaderRecompiler::CompileResult result;
ShaderRecompiler::Decoder::Program decoded;
ShaderRecompiler::CFG::Graph graph;
ShaderRecompiler::IR::Program ir;
std::string error;
Check(ShaderRecompiler::TryRecompile(shader, options, result, &error),
Check(ShaderRecompiler::Decoder::DecodeProgram(shader, decoded, &error) &&
ShaderRecompiler::CFG::BuildGraph(decoded, graph, &error) &&
ShaderRecompiler::IR::LowerProgram(decoded, graph,
ShaderType::Compute, 64, ir,
&error),
error.c_str());
Check(Common::ContainsStr(result.decoded_dump, "s_load_dwordx4"),
"new decoder did not decode SMEM x4 load");
Check(Common::ContainsStr(result.decoded_dump, "s_buffer_load_dwordx4"),
"new decoder did not decode scalar-buffer x4 load");
Check(
Common::ContainsStr(result.decoded_dump, "s_buffer_load_dwordx2 vcc_lo"),
"new decoder did not decode scalar-buffer x2 load into VCC");
Check(Common::ContainsStr(result.decoded_dump, "buffer_load_dwordx2"),
"new decoder did not decode buffer x2 load");
Check(Common::ContainsStr(result.decoded_dump, "buffer_load_dwordx3"),
"new decoder did not decode buffer x3 load");
Check(Common::ContainsStr(result.decoded_dump, "buffer_load_dwordx4"),
"new decoder did not decode buffer x4 load");
Check(Common::ContainsStr(result.decoded_dump, "buffer_store_dwordx4"),
"new decoder did not decode buffer x4 store");
Check(Common::ContainsStr(result.decoded_dump, "buffer_load_ubyte"),
"new decoder did not decode buffer ubyte load");
Check(Common::ContainsStr(result.decoded_dump, "buffer_load_ushort"),
"new decoder did not decode buffer ushort load");
Check(Common::ContainsStr(result.decoded_dump, "flat_load_dword"),
"new decoder did not decode flat dword load");
Check(Common::ContainsStr(result.decoded_dump, "segment=1"),
"new decoder did not preserve scratch segment metadata");
Check(Common::ContainsStr(result.decoded_dump, "segment=2"),
"new decoder did not preserve global segment metadata");
Check(Common::ContainsStr(result.decoded_dump, "dwords=4 bits=32"),
"new decoder did not expose width metadata for wide memory ops");
Check(Common::ContainsStr(result.ir_dump, "SLoadDword s4"),
"s_load_dwordx4 did not expand to first scalar dword IR load");
Check(Common::ContainsStr(result.ir_dump, "SLoadDword s7"),
"s_load_dwordx4 did not expand to last scalar dword IR load");
Check(Common::ContainsStr(result.ir_dump, "SBufferLoadDword s8"),
"s_buffer_load_dwordx4 did not expand to first scalar-buffer IR load");
Check(Common::ContainsStr(result.ir_dump, "SBufferLoadDword s11"),
"s_buffer_load_dwordx4 did not expand to last scalar-buffer IR load");
Check(Common::ContainsStr(result.ir_dump, "SBufferLoadDword vcc_lo"),
"s_buffer_load_dwordx2 did not expand to VCC low dword");
Check(Common::ContainsStr(result.ir_dump, "SBufferLoadDword vcc_hi"),
"s_buffer_load_dwordx2 did not expand to VCC high dword");
Check(
CountSourceOccurrences(result.ir_dump, "BufferLoadDword v20") == 1u &&
CountSourceOccurrences(result.ir_dump, "BufferLoadDword v24") == 1u &&
CountSourceOccurrences(result.ir_dump, "BufferLoadDword v28") == 1u &&
!Common::ContainsStr(result.ir_dump, "BufferLoadDword v31"),
"wide buffer loads were not preserved as one native IR operation");
Check(CountSourceOccurrences(result.ir_dump, "BufferStoreDword null, v32") ==
1u &&
CountSourceOccurrences(result.ir_dump,
"BufferStoreDword null, v36") == 1u &&
CountSourceOccurrences(result.ir_dump,
"BufferStoreDword null, v40") == 1u &&
!Common::ContainsStr(result.ir_dump, "BufferStoreDword null, v43"),
"wide buffer stores were not preserved as one native IR operation");
Check(Common::ContainsStr(result.ir_dump, "BufferLoadUbyte v44"),
"buffer_load_ubyte did not lower to sub-dword IR load");
Check(Common::ContainsStr(result.ir_dump, "BufferLoadUshort v45"),
"buffer_load_ushort did not lower to sub-dword IR load");
Check(Common::ContainsStr(result.ir_dump, "FlatLoadDword v50"),
"flat_load_dword did not lower to flat dword IR load");
Check(Common::ContainsStr(result.ir_dump, "scratch"),
"scratch segment load did not lower with scratch metadata");
Check(Common::ContainsStr(result.ir_dump, "global"),
"global segment load did not lower with global metadata");
Check(SpirvContainsOpcode(result.spirv, 65),
"SPIR-V binary does not contain OpAccessChain");
Check(SpirvContainsOpcode(result.spirv, 62),
"SPIR-V binary does not contain OpStore");
Check(SpirvContainsOpcode(result.spirv, 194),
"SPIR-V binary does not contain OpShiftRightLogical");
Check(SpirvContainsOpcode(result.spirv, 196),
"SPIR-V binary does not contain OpShiftLeftLogical");
Check(SpirvContainsOpcode(result.spirv, 199),
"SPIR-V binary does not contain OpBitwiseAnd");
CheckSpirvBinaryValidates(result.spirv);
std::vector<uint32_t> address_widths;
std::vector<uint32_t> buffer_widths;
bool buffer_x2_targets_vcc = false;
for (const auto &block : ir.blocks) {
for (const auto &inst : block.instructions) {
if (inst.op == ShaderRecompiler::IR::Opcode::SLoadDword) {
address_widths.push_back(inst.memory.data_dwords);
} else if (inst.op ==
ShaderRecompiler::IR::Opcode::SBufferLoadDword) {
buffer_widths.push_back(inst.memory.data_dwords);
if (inst.memory.data_dwords == 2u) {
buffer_x2_targets_vcc =
inst.dst.reg.file == ShaderRecompiler::IR::RegisterFile::Vcc &&
inst.dst.reg.index == 0u;
}
}
}
}
const std::vector<uint32_t> expected{1u, 2u, 4u, 8u, 16u};
Check(address_widths == expected && buffer_widths == expected,
"SMEM x1/x2/x4/x8/x16 did not remain one width-bearing ShaderIR operation each");
Check(buffer_x2_targets_vcc,
"s_buffer_load_dwordx2 did not preserve its VCC destination span");
const auto reject = [&](uint32_t opcode, uint32_t dst, uint32_t sbase,
const char *reason) {
const uint32_t invalid[] = {EncodeSmem0(opcode, dst, sbase),
125u << 25u, EncodeSopp(0x01)};
ShaderRecompiler::Decoder::Program invalid_decoded;
ShaderRecompiler::CFG::Graph invalid_graph;
ShaderRecompiler::IR::Program invalid_ir;
std::string invalid_error;
Check(ShaderRecompiler::Decoder::DecodeProgram(invalid, invalid_decoded,
&invalid_error) &&
ShaderRecompiler::CFG::BuildGraph(invalid_decoded, invalid_graph,
&invalid_error) &&
!ShaderRecompiler::IR::LowerProgram(
invalid_decoded, invalid_graph, ShaderType::Compute, 64,
invalid_ir, &invalid_error) &&
Common::ContainsStr(invalid_error, reason),
"invalid SMEM register span was not rejected");
};
reject(0x01, 1, 4, "destination");
reject(0x02, 2, 4, "destination");
reject(0x02, 124, 4, "destination");
reject(0x00, 0, 63, "base");
reject(0x08, 0, 1, "base");
}
void TestNewShaderRecompilerNativeWideBufferIr() {
@@ -8619,6 +8575,22 @@ void TestNativeWideValueValidation() {
ir.Emit(opcode, {resource, Value(0u), Value(0u), Value(0u), Value(true)},
flags);
};
const auto append_scalar_read = [](ValueProgram &program,
ValueOpcode opcode,
MemoryFlags flags) {
IREmitter ir(program.blocks.front());
if (opcode == ValueOpcode::ReadConstBuffer) {
const auto resource = ir.Emit(
ValueOpcode::GetBufferResource,
{Value(0u), Value(0u), Value(0u), Value(0u)});
ir.Emit(opcode, {resource, Value(0u)}, flags);
} else {
const auto resource =
ir.Emit(ValueOpcode::GetAddressResource, {Value(0u), Value(0u)});
ir.Emit(opcode,
{resource, Value(0u), Value(0u), Value(true)}, flags);
}
};
const auto check_rejected = [](const ValueProgram &program,
const char *expected) {
std::string error;
@@ -8627,6 +8599,58 @@ void TestNativeWideValueValidation() {
"malformed native-wide value operation was not rejected");
};
{
auto program = make_program();
append_scalar_read(program, ValueOpcode::ReadConstBuffer,
MemoryFlags{.index = 1});
check_rejected(program, "invalid memory-info index");
}
{
auto program = make_program();
MemoryInfo memory;
memory.kind = ResourceKind::ScalarAddress;
program.memory_info.push_back(memory);
append_scalar_read(program, ValueOpcode::ReadConstBuffer, {});
check_rejected(program, "invalid scalar-memory resource kind");
}
{
auto program = make_program();
MemoryInfo memory;
memory.kind = ResourceKind::ScalarAddress;
memory.data_bits = 16;
program.memory_info.push_back(memory);
append_scalar_read(program, ValueOpcode::LoadAddressU32, {});
check_rejected(program, "inconsistent scalar-memory metadata");
}
{
auto program = make_program();
MemoryInfo memory;
memory.kind = ResourceKind::ScalarBuffer;
memory.data_dwords = 2;
program.memory_info.push_back(memory);
append_scalar_read(program, ValueOpcode::ReadConstBuffer, {});
check_rejected(program, "inconsistent scalar-memory metadata");
}
{
auto program = make_program();
MemoryInfo memory;
memory.kind = ResourceKind::ScalarBuffer;
memory.component_count = 3;
program.memory_info.push_back(memory);
append_scalar_read(program, ValueOpcode::ReadConstBuffer, {});
check_rejected(program, "inconsistent scalar-memory metadata");
}
{
auto program = make_program();
MemoryInfo memory;
memory.kind = ResourceKind::ScalarAddress;
memory.component_count = 4;
memory.component_index = 4;
program.memory_info.push_back(memory);
append_scalar_read(program, ValueOpcode::LoadAddressU32, {});
check_rejected(program, "inconsistent scalar-memory metadata");
}
{
auto program = make_program();
MemoryInfo memory;
@@ -9890,7 +9914,7 @@ void TestSrtWalkerRealSBufferLowering() {
"real S_BUFFER_LOAD walk accepted a negative immediate");
}
void TestScalarMemoryLoadsSnapshotOverlappingOperands() {
void TestScalarMemorySourcesCapturedBeforeWrites() {
const auto CheckOverlap = [](uint32_t opcode, bool overlap_offset) {
const uint32_t base_field = overlap_offset ? 4u : 0u;
const uint32_t soffset = overlap_offset ? 0u : 125u;
@@ -9932,7 +9956,7 @@ void TestScalarMemoryLoadsSnapshotOverlappingOperands() {
error.c_str());
Check(flat.size() == table.size() &&
std::equal(flat.begin(), flat.end(), table.begin()),
"overlapping scalar-memory load did not snapshot its sources");
"overlapping scalar-memory load did not capture its sources before writes");
CheckFlattenedReadSlots(
ir, 4, "overlapping scalar-memory patch used the wrong flat offsets");
};
@@ -9976,6 +10000,39 @@ void TestScalarMemoryLoadCrossesIntoVcc() {
}
}
void TestScalarMemoryUnusedTailDce() {
const uint32_t shader[] = {
EncodeSmem0(0x0c, 16, 0),
4u << 25u, // s_buffer_load_dwordx16 s[16:31], s[0:3], s4
EncodeVop1(0x01, 0, 16), // v_mov_b32 v0, s16
EncodeMubuf0(0x1c),
EncodeMubuf1(0, 2, 1), // keep only the first loaded component live
EncodeSopp(0x01),
};
ShaderRecompiler::IR::Program ir;
std::string error;
Check(LowerTypedPlanning(shader, static_cast<uint32_t>(std::size(shader)),
ir, &error),
error.c_str());
uint32_t reads = 0;
for (const auto *block : ir.values->blocks) {
for (const auto &inst : *block) {
if (inst.GetOpcode() !=
ShaderRecompiler::IR::ValueOpcode::ReadConstBuffer) {
continue;
}
reads++;
const auto flags = inst.Flags<ShaderRecompiler::IR::MemoryFlags>();
Check(flags.index < ir.values->memory_info.size() &&
ir.values->memory_info[flags.index].component_index == 0u &&
ir.values->memory_info[flags.index].component_count == 16u,
"live x16 SMEM component lost its native-width metadata");
}
}
Check(reads == 1u,
"grouped x16 SMEM prevented dead component reads from being eliminated");
}
void TestResourceTrackingRealDensePatching() {
const uint32_t shader[] = {
EncodeMubuf0(0x0c),
@@ -10735,6 +10792,7 @@ int main() {
TestDemandDrivenSpirvDeclarations();
TestNativeSubgroupPolicy();
TestNewShaderRecompilerSMovB32();
TestNewShaderRecompilerNativeWideScalarMemoryIr();
TestNewShaderRecompilerNativeWideBufferIr();
TestNewShaderRecompilerMubufFormatLowering();
TestNewShaderRecompilerTypedBufferLowering();
@@ -10809,8 +10867,9 @@ int main() {
TestSrtWalkerRealSmemLowering();
TestSrtWalkerVccBaseLowering();
TestSrtWalkerRealSBufferLowering();
TestScalarMemoryLoadsSnapshotOverlappingOperands();
TestScalarMemorySourcesCapturedBeforeWrites();
TestScalarMemoryLoadCrossesIntoVcc();
TestScalarMemoryUnusedTailDce();
TestResourceTrackingRealDensePatching();
TestLowerProgramResetsAnalysisState();
TestNewShaderRecompilerNativeBindingPlan();