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Shader Disassembly: Introduce variables to hold common subexpressions
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@ -111,8 +111,12 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
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}
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};
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Instruction instr = par->info.code[index.row()];
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const SwizzlePattern& swizzle = par->info.swizzle_info[instr.common.operand_desc_id].pattern;
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const Instruction instr = par->info.code[index.row()];
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const OpCode opcode = instr.opcode;
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const OpCode::Info opcode_info = opcode.GetInfo();
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const u32 operand_desc_id = opcode_info.type == OpCode::Type::MultiplyAdd ?
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instr.mad.operand_desc_id.Value() : instr.common.operand_desc_id.Value();
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const SwizzlePattern swizzle = par->info.swizzle_info[operand_desc_id].pattern;
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// longest known instruction name: "setemit "
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int kOpcodeColumnWidth = 8;
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@ -121,9 +125,9 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
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// "-rXX.xyzw ", no attempt is made to align indexed inputs
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int kInputOperandColumnWidth = 11;
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output << instr.opcode.Value().GetInfo().name;
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output << opcode_info.name;
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switch (instr.opcode.Value().GetInfo().type) {
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switch (opcode_info.type) {
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case OpCode::Type::Trivial:
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// Nothing to do here
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break;
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@ -131,7 +135,7 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
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case OpCode::Type::Arithmetic:
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{
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// Use custom code for special instructions
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switch (instr.opcode.Value().EffectiveOpCode()) {
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switch (opcode.EffectiveOpCode()) {
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case OpCode::Id::CMP:
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{
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AlignToColumn(kOpcodeColumnWidth);
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@ -161,24 +165,24 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
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{
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AlignToColumn(kOpcodeColumnWidth);
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bool src_is_inverted = 0 != (instr.opcode.Value().GetInfo().subtype & OpCode::Info::SrcInversed);
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bool src_is_inverted = 0 != (opcode_info.subtype & OpCode::Info::SrcInversed);
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if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::Dest) {
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if (opcode_info.subtype & OpCode::Info::Dest) {
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// e.g. "r12.xy__"
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output << std::setw(3) << std::right << instr.common.dest.Value().GetName() << '.' << swizzle.DestMaskToString();
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} else if (instr.opcode.Value().GetInfo().subtype == OpCode::Info::MOVA) {
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} else if (opcode_info.subtype == OpCode::Info::MOVA) {
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output << " a0." << swizzle.DestMaskToString();
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}
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AlignToColumn(kOutputColumnWidth);
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if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::Src1) {
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if (opcode_info.subtype & OpCode::Info::Src1) {
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SourceRegister src1 = instr.common.GetSrc1(src_is_inverted);
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print_input(output, src1, swizzle.negate_src1, swizzle.SelectorToString(false), true, instr.common.AddressRegisterName());
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AlignToColumn(kInputOperandColumnWidth);
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}
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// TODO: In some cases, the Address Register is used as an index for SRC2 instead of SRC1
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if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::Src2) {
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if (opcode_info.subtype & OpCode::Info::Src2) {
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SourceRegister src2 = instr.common.GetSrc2(src_is_inverted);
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print_input(output, src2, swizzle.negate_src2, swizzle.SelectorToString(true));
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AlignToColumn(kInputOperandColumnWidth);
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@ -194,13 +198,13 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
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{
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output << ' ';
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switch (instr.opcode.Value().EffectiveOpCode()) {
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switch (opcode.EffectiveOpCode()) {
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case OpCode::Id::LOOP:
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output << "(unknown instruction format)";
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break;
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default:
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if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasCondition) {
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if (opcode_info.subtype & OpCode::Info::HasCondition) {
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output << '(';
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if (instr.flow_control.op != instr.flow_control.JustY) {
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@ -220,23 +224,23 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
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}
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output << ") ";
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} else if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasUniformIndex) {
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} else if (opcode_info.subtype & OpCode::Info::HasUniformIndex) {
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output << 'b' << instr.flow_control.bool_uniform_id << ' ';
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}
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u32 target_addr = instr.flow_control.dest_offset;
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u32 target_addr_else = instr.flow_control.dest_offset;
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if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasAlternative) {
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if (opcode_info.subtype & OpCode::Info::HasAlternative) {
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output << "else jump to 0x" << std::setw(4) << std::right << std::setfill('0') << (4 * instr.flow_control.dest_offset);
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} else if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasExplicitDest) {
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} else if (opcode_info.subtype & OpCode::Info::HasExplicitDest) {
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output << "jump to 0x" << std::setw(4) << std::right << std::setfill('0') << (4 * instr.flow_control.dest_offset);
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} else {
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// TODO: Handle other cases
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output << "(unknown destination)";
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}
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if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasFinishPoint) {
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if (opcode_info.subtype & OpCode::Info::HasFinishPoint) {
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output << " (return on " << std::setw(4) << std::right << std::setfill('0')
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<< (4 * instr.flow_control.dest_offset + 4 * instr.flow_control.num_instructions) << ')';
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}
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