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video_core: Allow copy elision to take place where applicable

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Removes const from some variables that are returned from functions, as
this allows the move assignment/constructors to execute for them.
This commit is contained in:
Lioncash 2020-07-21 00:29:23 -04:00
parent ad0b295125
commit 6adc824d9d
7 changed files with 26 additions and 26 deletions
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4
src/video_core/renderer_opengl/gl_arb_decompiler.cpp
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@ -1671,7 +1671,7 @@ std::string ARBDecompiler::HCastFloat(Operation operation) {
}
std::string ARBDecompiler::HUnpack(Operation operation) {
const std::string operand = Visit(operation[0]);
std::string operand = Visit(operation[0]);
switch (std::get<Tegra::Shader::HalfType>(operation.GetMeta())) {
case Tegra::Shader::HalfType::H0_H1:
return operand;
@ -2021,7 +2021,7 @@ std::string ARBDecompiler::InvocationId(Operation) {
std::string ARBDecompiler::YNegate(Operation) {
LOG_WARNING(Render_OpenGL, "(STUBBED)");
const std::string temporary = AllocTemporary();
std::string temporary = AllocTemporary();
AddLine("MOV.F {}, 1;", temporary);
return temporary;
}

2
src/video_core/renderer_opengl/gl_shader_cache.cpp
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@ -126,7 +126,7 @@ std::shared_ptr<Registry> MakeRegistry(const ShaderDiskCacheEntry& entry) {
const VideoCore::GuestDriverProfile guest_profile{entry.texture_handler_size};
const VideoCommon::Shader::SerializedRegistryInfo info{guest_profile, entry.bound_buffer,
entry.graphics_info, entry.compute_info};
const auto registry = std::make_shared<Registry>(entry.type, info);
auto registry = std::make_shared<Registry>(entry.type, info);
for (const auto& [address, value] : entry.keys) {
const auto [buffer, offset] = address;
registry->InsertKey(buffer, offset, value);

2
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -1912,7 +1912,7 @@ private:
Expression Comparison(Operation operation) {
static_assert(!unordered || type == Type::Float);
const Expression expr = GenerateBinaryInfix(operation, op, Type::Bool, type, type);
Expression expr = GenerateBinaryInfix(operation, op, Type::Bool, type, type);
if constexpr (op.compare("!=") == 0 && type == Type::Float && !unordered) {
// GLSL's operator!=(float, float) doesn't seem be ordered. This happens on both AMD's

6
src/video_core/shader/decode/arithmetic_integer.cpp
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@ -98,12 +98,12 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) {
op_b = GetOperandAbsNegInteger(op_b, false, instr.iadd3.neg_b, true);
op_c = GetOperandAbsNegInteger(op_c, false, instr.iadd3.neg_c, true);
const Node value = [&]() {
const Node add_ab = Operation(OperationCode::IAdd, NO_PRECISE, op_a, op_b);
const Node value = [&] {
Node add_ab = Operation(OperationCode::IAdd, NO_PRECISE, op_a, op_b);
if (opcode->get().GetId() != OpCode::Id::IADD3_R) {
return Operation(OperationCode::IAdd, NO_PRECISE, add_ab, op_c);
}
const Node shifted = [&]() {
const Node shifted = [&] {
switch (instr.iadd3.mode) {
case Tegra::Shader::IAdd3Mode::RightShift:
// TODO(tech4me): According to

19
src/video_core/shader/decode/video.cpp
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@ -91,29 +91,28 @@ u32 ShaderIR::DecodeVideo(NodeBlock& bb, u32 pc) {
return pc;
}
Node ShaderIR::GetVideoOperand(Node op, bool is_chunk, bool is_signed,
Tegra::Shader::VideoType type, u64 byte_height) {
Node ShaderIR::GetVideoOperand(Node op, bool is_chunk, bool is_signed, VideoType type,
u64 byte_height) {
if (!is_chunk) {
return BitfieldExtract(op, static_cast<u32>(byte_height * 8), 8);
}
const Node zero = Immediate(0);
switch (type) {
case Tegra::Shader::VideoType::Size16_Low:
case VideoType::Size16_Low:
return BitfieldExtract(op, 0, 16);
case Tegra::Shader::VideoType::Size16_High:
case VideoType::Size16_High:
return BitfieldExtract(op, 16, 16);
case Tegra::Shader::VideoType::Size32:
case VideoType::Size32:
// TODO(Rodrigo): From my hardware tests it becomes a bit "mad" when this type is used
// (1 * 1 + 0 == 0x5b800000). Until a better explanation is found: abort.
UNIMPLEMENTED();
return zero;
case Tegra::Shader::VideoType::Invalid:
return Immediate(0);
case VideoType::Invalid:
UNREACHABLE_MSG("Invalid instruction encoding");
return zero;
return Immediate(0);
default:
UNREACHABLE();
return zero;
return Immediate(0);
}
}

13
src/video_core/shader/decode/xmad.cpp
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@ -81,20 +81,21 @@ u32 ShaderIR::DecodeXmad(NodeBlock& bb, u32 pc) {
SetTemporary(bb, 0, product);
product = GetTemporary(0);
const Node original_c = op_c;
Node original_c = op_c;
const Tegra::Shader::XmadMode set_mode = mode; // Workaround to clang compile error
op_c = [&]() {
op_c = [&] {
switch (set_mode) {
case Tegra::Shader::XmadMode::None:
return original_c;
case Tegra::Shader::XmadMode::CLo:
return BitfieldExtract(original_c, 0, 16);
return BitfieldExtract(std::move(original_c), 0, 16);
case Tegra::Shader::XmadMode::CHi:
return BitfieldExtract(original_c, 16, 16);
return BitfieldExtract(std::move(original_c), 16, 16);
case Tegra::Shader::XmadMode::CBcc: {
const Node shifted_b = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed_b,
Node shifted_b = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed_b,
original_b, Immediate(16));
return SignedOperation(OperationCode::IAdd, is_signed_c, original_c, shifted_b);
return SignedOperation(OperationCode::IAdd, is_signed_c, std::move(original_c),
std::move(shifted_b));
}
case Tegra::Shader::XmadMode::CSfu: {
const Node comp_a =

4
src/video_core/shader/shader_ir.cpp
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@ -112,9 +112,9 @@ Node ShaderIR::GetOutputAttribute(Attribute::Index index, u64 element, Node buff
}
Node ShaderIR::GetInternalFlag(InternalFlag flag, bool negated) const {
const Node node = MakeNode<InternalFlagNode>(flag);
Node node = MakeNode<InternalFlagNode>(flag);
if (negated) {
return Operation(OperationCode::LogicalNegate, node);
return Operation(OperationCode::LogicalNegate, std::move(node));
}
return node;
}