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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "shader_recompiler/backend/spirv/emit_spirv.h"
namespace Shader::Backend::SPIRV {
Id EmitIAdd32(EmitContext& ctx, IR::Inst* inst, Id a, Id b) {
Id result{};
if (IR::Inst* const carry{inst->GetAssociatedPseudoOperation(IR::Opcode::GetCarryFromOp)}) {
const Id carry_type{ctx.TypeStruct(ctx.U32[1], ctx.U32[1])};
const Id carry_result{ctx.OpIAddCarry(carry_type, a, b)};
result = ctx.OpCompositeExtract(ctx.U32[1], carry_result, 0U);
const Id carry_value{ctx.OpCompositeExtract(ctx.U32[1], carry_result, 1U)};
carry->SetDefinition(ctx.OpINotEqual(ctx.U1, carry_value, ctx.u32_zero_value));
carry->Invalidate();
} else {
result = ctx.OpIAdd(ctx.U32[1], a, b);
}
if (IR::Inst* const zero{inst->GetAssociatedPseudoOperation(IR::Opcode::GetZeroFromOp)}) {
zero->SetDefinition(ctx.OpIEqual(ctx.U1, result, ctx.u32_zero_value));
zero->Invalidate();
}
if (IR::Inst* const sign{inst->GetAssociatedPseudoOperation(IR::Opcode::GetSignFromOp)}) {
sign->SetDefinition(ctx.OpSLessThan(ctx.U1, result, ctx.u32_zero_value));
sign->Invalidate();
}
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())};
const Id is_positive{ctx.OpSGreaterThanEqual(ctx.U1, a, ctx.u32_zero_value)};
const Id sub_a{ctx.OpISub(ctx.U32[1], ctx.Constant(ctx.U32[1], s32_max), a)};
const Id positive_test{ctx.OpSGreaterThan(ctx.U1, b, sub_a)};
const Id negative_test{ctx.OpSLessThan(ctx.U1, b, sub_a)};
const Id carry_flag{ctx.OpSelect(ctx.U1, is_positive, positive_test, negative_test)};
overflow->SetDefinition(carry_flag);
overflow->Invalidate();
}
return result;
}
void EmitIAdd64(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
Id EmitISub32(EmitContext& ctx, Id a, Id b) {
return ctx.OpISub(ctx.U32[1], a, b);
}
void EmitISub64(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
Id EmitIMul32(EmitContext& ctx, Id a, Id b) {
return ctx.OpIMul(ctx.U32[1], a, b);
}
void EmitINeg32(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitIAbs32(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
Id EmitShiftLeftLogical32(EmitContext& ctx, Id base, Id shift) {
return ctx.OpShiftLeftLogical(ctx.U32[1], base, shift);
}
void EmitShiftRightLogical32(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitShiftRightArithmetic32(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
Id EmitBitwiseAnd32(EmitContext& ctx, Id a, Id b) {
return ctx.OpBitwiseAnd(ctx.U32[1], a, b);
}
Id EmitBitwiseOr32(EmitContext& ctx, Id a, Id b) {
return ctx.OpBitwiseOr(ctx.U32[1], a, b);
}
Id EmitBitwiseXor32(EmitContext& ctx, Id a, Id b) {
return ctx.OpBitwiseXor(ctx.U32[1], a, b);
}
void EmitBitFieldInsert(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitBitFieldSExtract(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
Id EmitBitFieldUExtract(EmitContext& ctx, Id base, Id offset, Id count) {
return ctx.OpBitFieldUExtract(ctx.U32[1], base, offset, count);
}
Id EmitSLessThan(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpSLessThan(ctx.U1, lhs, rhs);
}
Id EmitULessThan(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpULessThan(ctx.U1, lhs, rhs);
}
Id EmitIEqual(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpIEqual(ctx.U1, lhs, rhs);
}
Id EmitSLessThanEqual(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpSLessThanEqual(ctx.U1, lhs, rhs);
}
Id EmitULessThanEqual(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpULessThanEqual(ctx.U1, lhs, rhs);
}
Id EmitSGreaterThan(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpSGreaterThan(ctx.U1, lhs, rhs);
}
Id EmitUGreaterThan(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpUGreaterThan(ctx.U1, lhs, rhs);
}
Id EmitINotEqual(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpINotEqual(ctx.U1, lhs, rhs);
}
Id EmitSGreaterThanEqual(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpSGreaterThanEqual(ctx.U1, lhs, rhs);
}
Id EmitUGreaterThanEqual(EmitContext& ctx, Id lhs, Id rhs) {
return ctx.OpUGreaterThanEqual(ctx.U1, lhs, rhs);
}
} // namespace Shader::Backend::SPIRV
|
