glsl: Implement IADD CC
This commit is contained in:
parent
453cd25da5
commit
21797efa54
|
@ -183,6 +183,8 @@ std::string EmitGLSL(const Profile& profile, const RuntimeInfo& runtime_info, IR
|
|||
for (size_t index = 0; index < ctx.reg_alloc.num_used_registers; ++index) {
|
||||
ctx.header += fmt::format("{} R{};", ctx.reg_alloc.reg_types[index], index);
|
||||
}
|
||||
// TODO: track CC usage
|
||||
ctx.header += "uint carry;";
|
||||
ctx.code.insert(0, ctx.header);
|
||||
ctx.code += "}";
|
||||
fmt::print("\n{}\n", ctx.code);
|
||||
|
|
|
@ -29,9 +29,22 @@ void SetSignFlag(EmitContext& ctx, IR::Inst& inst, std::string_view result) {
|
|||
} // Anonymous namespace
|
||||
void EmitIAdd32(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
|
||||
const auto result{ctx.reg_alloc.Define(inst, Type::U32)};
|
||||
if (IR::Inst* const carry{inst.GetAssociatedPseudoOperation(IR::Opcode::GetCarryFromOp)}) {
|
||||
ctx.Add("{}=uaddCarry({},{},carry);", result, a, b);
|
||||
ctx.AddU1("{}=carry!=0;", *carry, result);
|
||||
carry->Invalidate();
|
||||
} else {
|
||||
ctx.Add("{}={}+{};", result, a, b);
|
||||
}
|
||||
SetZeroFlag(ctx, inst, result);
|
||||
SetSignFlag(ctx, inst, result);
|
||||
if (IR::Inst * overflow{inst.GetAssociatedPseudoOperation(IR::Opcode::GetOverflowFromOp)}) {
|
||||
// https://stackoverflow.com/questions/55468823/how-to-detect-integer-overflow-in-c
|
||||
constexpr u32 s32_max{static_cast<u32>(std::numeric_limits<s32>::max())};
|
||||
ctx.AddU1("{}=int({})>=0?int({})>int({}-{}):int({})<int({}-{});", *overflow, a, b, s32_max,
|
||||
a, b, s32_max, a);
|
||||
overflow->Invalidate();
|
||||
}
|
||||
}
|
||||
|
||||
void EmitIAdd64(EmitContext& ctx, IR::Inst& inst, std::string_view a, std::string_view b) {
|
||||
|
@ -179,7 +192,7 @@ void EmitSLessThan(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::
|
|||
}
|
||||
|
||||
void EmitULessThan(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::string_view rhs) {
|
||||
ctx.AddU1("{}=uint({})<uint({)};", inst, lhs, rhs);
|
||||
ctx.AddU1("{}=uint({})<uint({});", inst, lhs, rhs);
|
||||
}
|
||||
|
||||
void EmitIEqual(EmitContext& ctx, IR::Inst& inst, std::string_view lhs, std::string_view rhs) {
|
||||
|
|
Reference in New Issue