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Shader Disassembly: Introduce variables to hold common subexpressions

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This commit is contained in:
Yuri Kunde Schlesner 2015-08-19 04:39:24 -03:00
parent ecbad494d9
commit 86d5461bcd
1 changed files with 20 additions and 16 deletions
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36
src/citra_qt/debugger/graphics_vertex_shader.cpp
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@ -111,8 +111,12 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
}
};
Instruction instr = par->info.code[index.row()];
const SwizzlePattern& swizzle = par->info.swizzle_info[instr.common.operand_desc_id].pattern;
const Instruction instr = par->info.code[index.row()];
const OpCode opcode = instr.opcode;
const OpCode::Info opcode_info = opcode.GetInfo();
const u32 operand_desc_id = opcode_info.type == OpCode::Type::MultiplyAdd ?
instr.mad.operand_desc_id.Value() : instr.common.operand_desc_id.Value();
const SwizzlePattern swizzle = par->info.swizzle_info[operand_desc_id].pattern;
// longest known instruction name: "setemit "
int kOpcodeColumnWidth = 8;
@ -121,9 +125,9 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
// "-rXX.xyzw ", no attempt is made to align indexed inputs
int kInputOperandColumnWidth = 11;
output << instr.opcode.Value().GetInfo().name;
output << opcode_info.name;
switch (instr.opcode.Value().GetInfo().type) {
switch (opcode_info.type) {
case OpCode::Type::Trivial:
// Nothing to do here
break;
@ -131,7 +135,7 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
case OpCode::Type::Arithmetic:
{
// Use custom code for special instructions
switch (instr.opcode.Value().EffectiveOpCode()) {
switch (opcode.EffectiveOpCode()) {
case OpCode::Id::CMP:
{
AlignToColumn(kOpcodeColumnWidth);
@ -161,24 +165,24 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
{
AlignToColumn(kOpcodeColumnWidth);
bool src_is_inverted = 0 != (instr.opcode.Value().GetInfo().subtype & OpCode::Info::SrcInversed);
bool src_is_inverted = 0 != (opcode_info.subtype & OpCode::Info::SrcInversed);
if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::Dest) {
if (opcode_info.subtype & OpCode::Info::Dest) {
// e.g. "r12.xy__"
output << std::setw(3) << std::right << instr.common.dest.Value().GetName() << '.' << swizzle.DestMaskToString();
} else if (instr.opcode.Value().GetInfo().subtype == OpCode::Info::MOVA) {
} else if (opcode_info.subtype == OpCode::Info::MOVA) {
output << " a0." << swizzle.DestMaskToString();
}
AlignToColumn(kOutputColumnWidth);
if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::Src1) {
if (opcode_info.subtype & OpCode::Info::Src1) {
SourceRegister src1 = instr.common.GetSrc1(src_is_inverted);
print_input(output, src1, swizzle.negate_src1, swizzle.SelectorToString(false), true, instr.common.AddressRegisterName());
AlignToColumn(kInputOperandColumnWidth);
}
// TODO: In some cases, the Address Register is used as an index for SRC2 instead of SRC1
if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::Src2) {
if (opcode_info.subtype & OpCode::Info::Src2) {
SourceRegister src2 = instr.common.GetSrc2(src_is_inverted);
print_input(output, src2, swizzle.negate_src2, swizzle.SelectorToString(true));
AlignToColumn(kInputOperandColumnWidth);
@ -194,13 +198,13 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
{
output << ' ';
switch (instr.opcode.Value().EffectiveOpCode()) {
switch (opcode.EffectiveOpCode()) {
case OpCode::Id::LOOP:
output << "(unknown instruction format)";
break;
default:
if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasCondition) {
if (opcode_info.subtype & OpCode::Info::HasCondition) {
output << '(';
if (instr.flow_control.op != instr.flow_control.JustY) {
@ -220,23 +224,23 @@ QVariant GraphicsVertexShaderModel::data(const QModelIndex& index, int role) con
}
output << ") ";
} else if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasUniformIndex) {
} else if (opcode_info.subtype & OpCode::Info::HasUniformIndex) {
output << 'b' << instr.flow_control.bool_uniform_id << ' ';
}
u32 target_addr = instr.flow_control.dest_offset;
u32 target_addr_else = instr.flow_control.dest_offset;
if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasAlternative) {
if (opcode_info.subtype & OpCode::Info::HasAlternative) {
output << "else jump to 0x" << std::setw(4) << std::right << std::setfill('0') << (4 * instr.flow_control.dest_offset);
} else if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasExplicitDest) {
} else if (opcode_info.subtype & OpCode::Info::HasExplicitDest) {
output << "jump to 0x" << std::setw(4) << std::right << std::setfill('0') << (4 * instr.flow_control.dest_offset);
} else {
// TODO: Handle other cases
output << "(unknown destination)";
}
if (instr.opcode.Value().GetInfo().subtype & OpCode::Info::HasFinishPoint) {
if (opcode_info.subtype & OpCode::Info::HasFinishPoint) {
output << " (return on " << std::setw(4) << std::right << std::setfill('0')
<< (4 * instr.flow_control.dest_offset + 4 * instr.flow_control.num_instructions) << ')';
}