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RD DXIL Disassembly: change getelementptr output

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Convert the DXIL addrspace value into string
Hand de-mangle pointer name

DXC:
%3 = getelementptr [6 x float], [6 x float] addrspace(3)* @"\01?s_x@@3@$$A.1dim", i32 0, i32 %9

RD:
GroupShared float* _3 = s_x[0] + _9;
This commit is contained in:
Jake Turner
2024-04-23 15:48:54 +01:00
parent 601dc58a52
commit 2b59d21fd9
1 changed files with 107 additions and 11 deletions
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renderdoc/driver/shaders/dxil/dxil_disassemble.cpp
+107 -11
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@@ -2464,20 +2464,116 @@ void Program::MakeRDDisassemblyString()
}
case Operation::GetElementPtr:
{
lineStr += "getelementptr ";
if(inst.opFlags() & InstructionFlags::InBounds)
lineStr += "inbounds ";
lineStr += inst.args[0]->type->inner->toString();
lineStr += ", ";
bool first = true;
for(const Value *s : inst.args)
bool fallbackOutput = true;
if(!inst.type->isVoid())
{
if(!first)
lineStr += ", ";
// type "float addrspace(3)*" : addrspace(3) is DXIL specific, see DXIL::Type::PointerAddrSpace
rdcstr typeStr = inst.type->toString();
int start = typeStr.find(" addrspace(");
if(start > 0)
{
rdcstr scalarType = typeStr.substr(0, start);
scalarType.trim();
lineStr += ArgToString(s, false);
first = false;
start += 11;
int end = typeStr.find(')', start);
if(end > start)
{
// Example output:
// DXC:
// %3 = getelementptr [6 x float], [6 x float] addrspace(3)* @"\01?s_x@@3@$$A.1dim", i32 0, i32 %9
// RD: GroupShared float* _3 = s_x[0] + _9;
fallbackOutput = false;
rdcstr addrspaceStr(typeStr.substr(start, end - start));
int32_t value = atoi(addrspaceStr.c_str());
DXIL::Type::PointerAddrSpace addrspace = (DXIL::Type::PointerAddrSpace)value;
switch(addrspace)
{
case DXIL::Type::PointerAddrSpace::Default: lineStr = ""; break;
case DXIL::Type::PointerAddrSpace::DeviceMemory:
lineStr = "DeviceMemory";
break;
case DXIL::Type::PointerAddrSpace::CBuffer: lineStr = "CBuffer"; break;
case DXIL::Type::PointerAddrSpace::GroupShared: lineStr = "GroupShared"; break;
case DXIL::Type::PointerAddrSpace::GenericPointer: lineStr = ""; break;
case DXIL::Type::PointerAddrSpace::ImmediateCBuffer:
lineStr = "ImmediateCBuffer";
break;
};
lineStr += " ";
lineStr += scalarType;
lineStr += "* ";
if(!inst.getName().empty())
lineStr += StringFormat::Fmt("%c%s = ", DXIL::dxilIdentifier,
escapeStringIfNeeded(inst.getName()).c_str());
else if(inst.slot != ~0U)
lineStr += StringFormat::Fmt("%c%u = ", DXIL::dxilIdentifier, inst.slot);
// arg[0] : ptr
rdcstr ptrStr = ArgToString(inst.args[0], false);
// Try to de-mangle the pointer name
// @"\01?shared_pos@@3PAY0BC@$$CAMA.1dim" -> shared_pos
// Take the string between first alphabetical character and last alphanumeric character or "_"
start = 0;
int strEnd = (int)ptrStr.size();
while(start < strEnd)
{
if(isalpha(ptrStr[start]))
break;
++start;
}
if(start < strEnd)
{
end = start + 1;
while(end < strEnd)
{
char c = ptrStr[end];
if(!isalnum(c) && c != '_')
break;
++end;
}
}
if(end > start)
ptrStr = ptrStr.substr(start, end - start);
lineStr += ptrStr;
// arg[1] : index 0
if(inst.args.size() > 1)
{
lineStr += "[";
lineStr += ArgToString(inst.args[1], false);
lineStr += "]";
}
// arg[2..] : index 1...N
for(size_t a = 2; a < inst.args.size(); ++a)
{
lineStr += " + ";
lineStr += ArgToString(inst.args[a], false);
}
}
}
}
if(fallbackOutput)
{
lineStr += "getelementptr ";
bool first = true;
for(const Value *s : inst.args)
{
if(!first)
lineStr += ", ";
lineStr += ArgToString(s, false);
first = false;
}
}
if(inst.opFlags() & InstructionFlags::InBounds)
commentStr += "inbounds ";
break;
}
case Operation::LoadAtomic: commentStr += "atomic ";