1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/bit_field.h"
#include "common/common_types.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/common_funcs.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
namespace Shader::Maxwell {
namespace {
void DSET(TranslatorVisitor& v, u64 insn, const IR::F64& src_b) {
union {
u64 insn;
BitField<0, 8, IR::Reg> dest_reg;
BitField<8, 8, IR::Reg> src_a_reg;
BitField<39, 3, IR::Pred> pred;
BitField<42, 1, u64> neg_pred;
BitField<43, 1, u64> negate_a;
BitField<44, 1, u64> abs_b;
BitField<45, 2, BooleanOp> bop;
BitField<47, 1, u64> cc;
BitField<48, 4, FPCompareOp> compare_op;
BitField<52, 1, u64> bf;
BitField<53, 1, u64> negate_b;
BitField<54, 1, u64> abs_a;
} const dset{insn};
const IR::F64 op_a{v.ir.FPAbsNeg(v.D(dset.src_a_reg), dset.abs_a != 0, dset.negate_a != 0)};
const IR::F64 op_b{v.ir.FPAbsNeg(src_b, dset.abs_b != 0, dset.negate_b != 0)};
IR::U1 pred{v.ir.GetPred(dset.pred)};
if (dset.neg_pred != 0) {
pred = v.ir.LogicalNot(pred);
}
const IR::U1 cmp_result{FloatingPointCompare(v.ir, op_a, op_b, dset.compare_op)};
const IR::U1 bop_result{PredicateCombine(v.ir, cmp_result, pred, dset.bop)};
const IR::U32 one_mask{v.ir.Imm32(-1)};
const IR::U32 fp_one{v.ir.Imm32(0x3f800000)};
const IR::U32 zero{v.ir.Imm32(0)};
const IR::U32 pass_result{dset.bf == 0 ? one_mask : fp_one};
const IR::U32 result{v.ir.Select(bop_result, pass_result, zero)};
v.X(dset.dest_reg, result);
if (dset.cc != 0) {
const IR::U1 is_zero{v.ir.IEqual(result, zero)};
v.SetZFlag(is_zero);
if (dset.bf != 0) {
v.ResetSFlag();
} else {
v.SetSFlag(v.ir.LogicalNot(is_zero));
}
v.ResetCFlag();
v.ResetOFlag();
}
}
} // Anonymous namespace
void TranslatorVisitor::DSET_reg(u64 insn) {
DSET(*this, insn, GetDoubleReg20(insn));
}
void TranslatorVisitor::DSET_cbuf(u64 insn) {
DSET(*this, insn, GetDoubleCbuf(insn));
}
void TranslatorVisitor::DSET_imm(u64 insn) {
DSET(*this, insn, GetDoubleImm20(insn));
}
} // namespace Shader::Maxwell
|
