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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
|
//===- SlowDynamicAPInt.cpp - SlowDynamicAPInt Implementation -------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SlowDynamicAPInt.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace detail;
SlowDynamicAPInt::SlowDynamicAPInt(int64_t Val)
: Val(64, Val, /*isSigned=*/true) {}
SlowDynamicAPInt::SlowDynamicAPInt() : SlowDynamicAPInt(0) {}
SlowDynamicAPInt::SlowDynamicAPInt(const APInt &Val) : Val(Val) {}
SlowDynamicAPInt &SlowDynamicAPInt::operator=(int64_t Val) {
return *this = SlowDynamicAPInt(Val);
}
SlowDynamicAPInt::operator int64_t() const { return Val.getSExtValue(); }
hash_code detail::hash_value(const SlowDynamicAPInt &X) {
return hash_value(X.Val);
}
/// ---------------------------------------------------------------------------
/// Convenience operator overloads for int64_t.
/// ---------------------------------------------------------------------------
SlowDynamicAPInt &detail::operator+=(SlowDynamicAPInt &A, int64_t B) {
return A += SlowDynamicAPInt(B);
}
SlowDynamicAPInt &detail::operator-=(SlowDynamicAPInt &A, int64_t B) {
return A -= SlowDynamicAPInt(B);
}
SlowDynamicAPInt &detail::operator*=(SlowDynamicAPInt &A, int64_t B) {
return A *= SlowDynamicAPInt(B);
}
SlowDynamicAPInt &detail::operator/=(SlowDynamicAPInt &A, int64_t B) {
return A /= SlowDynamicAPInt(B);
}
SlowDynamicAPInt &detail::operator%=(SlowDynamicAPInt &A, int64_t B) {
return A %= SlowDynamicAPInt(B);
}
bool detail::operator==(const SlowDynamicAPInt &A, int64_t B) {
return A == SlowDynamicAPInt(B);
}
bool detail::operator!=(const SlowDynamicAPInt &A, int64_t B) {
return A != SlowDynamicAPInt(B);
}
bool detail::operator>(const SlowDynamicAPInt &A, int64_t B) {
return A > SlowDynamicAPInt(B);
}
bool detail::operator<(const SlowDynamicAPInt &A, int64_t B) {
return A < SlowDynamicAPInt(B);
}
bool detail::operator<=(const SlowDynamicAPInt &A, int64_t B) {
return A <= SlowDynamicAPInt(B);
}
bool detail::operator>=(const SlowDynamicAPInt &A, int64_t B) {
return A >= SlowDynamicAPInt(B);
}
SlowDynamicAPInt detail::operator+(const SlowDynamicAPInt &A, int64_t B) {
return A + SlowDynamicAPInt(B);
}
SlowDynamicAPInt detail::operator-(const SlowDynamicAPInt &A, int64_t B) {
return A - SlowDynamicAPInt(B);
}
SlowDynamicAPInt detail::operator*(const SlowDynamicAPInt &A, int64_t B) {
return A * SlowDynamicAPInt(B);
}
SlowDynamicAPInt detail::operator/(const SlowDynamicAPInt &A, int64_t B) {
return A / SlowDynamicAPInt(B);
}
SlowDynamicAPInt detail::operator%(const SlowDynamicAPInt &A, int64_t B) {
return A % SlowDynamicAPInt(B);
}
bool detail::operator==(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) == B;
}
bool detail::operator!=(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) != B;
}
bool detail::operator>(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) > B;
}
bool detail::operator<(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) < B;
}
bool detail::operator<=(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) <= B;
}
bool detail::operator>=(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) >= B;
}
SlowDynamicAPInt detail::operator+(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) + B;
}
SlowDynamicAPInt detail::operator-(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) - B;
}
SlowDynamicAPInt detail::operator*(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) * B;
}
SlowDynamicAPInt detail::operator/(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) / B;
}
SlowDynamicAPInt detail::operator%(int64_t A, const SlowDynamicAPInt &B) {
return SlowDynamicAPInt(A) % B;
}
static unsigned getMaxWidth(const APInt &A, const APInt &B) {
return std::max(A.getBitWidth(), B.getBitWidth());
}
/// ---------------------------------------------------------------------------
/// Comparison operators.
/// ---------------------------------------------------------------------------
// TODO: consider instead making APInt::compare available and using that.
bool SlowDynamicAPInt::operator==(const SlowDynamicAPInt &O) const {
unsigned Width = getMaxWidth(Val, O.Val);
return Val.sext(Width) == O.Val.sext(Width);
}
bool SlowDynamicAPInt::operator!=(const SlowDynamicAPInt &O) const {
unsigned Width = getMaxWidth(Val, O.Val);
return Val.sext(Width) != O.Val.sext(Width);
}
bool SlowDynamicAPInt::operator>(const SlowDynamicAPInt &O) const {
unsigned Width = getMaxWidth(Val, O.Val);
return Val.sext(Width).sgt(O.Val.sext(Width));
}
bool SlowDynamicAPInt::operator<(const SlowDynamicAPInt &O) const {
unsigned Width = getMaxWidth(Val, O.Val);
return Val.sext(Width).slt(O.Val.sext(Width));
}
bool SlowDynamicAPInt::operator<=(const SlowDynamicAPInt &O) const {
unsigned Width = getMaxWidth(Val, O.Val);
return Val.sext(Width).sle(O.Val.sext(Width));
}
bool SlowDynamicAPInt::operator>=(const SlowDynamicAPInt &O) const {
unsigned Width = getMaxWidth(Val, O.Val);
return Val.sext(Width).sge(O.Val.sext(Width));
}
/// ---------------------------------------------------------------------------
/// Arithmetic operators.
/// ---------------------------------------------------------------------------
/// Bring a and b to have the same width and then call op(a, b, overflow).
/// If the overflow bit becomes set, resize a and b to double the width and
/// call op(a, b, overflow), returning its result. The operation with double
/// widths should not also overflow.
APInt runOpWithExpandOnOverflow(
const APInt &A, const APInt &B,
function_ref<APInt(const APInt &, const APInt &, bool &Overflow)> Op) {
bool Overflow;
unsigned Width = getMaxWidth(A, B);
APInt Ret = Op(A.sext(Width), B.sext(Width), Overflow);
if (!Overflow)
return Ret;
Width *= 2;
Ret = Op(A.sext(Width), B.sext(Width), Overflow);
assert(!Overflow && "double width should be sufficient to avoid overflow!");
return Ret;
}
SlowDynamicAPInt SlowDynamicAPInt::operator+(const SlowDynamicAPInt &O) const {
return SlowDynamicAPInt(
runOpWithExpandOnOverflow(Val, O.Val, std::mem_fn(&APInt::sadd_ov)));
}
SlowDynamicAPInt SlowDynamicAPInt::operator-(const SlowDynamicAPInt &O) const {
return SlowDynamicAPInt(
runOpWithExpandOnOverflow(Val, O.Val, std::mem_fn(&APInt::ssub_ov)));
}
SlowDynamicAPInt SlowDynamicAPInt::operator*(const SlowDynamicAPInt &O) const {
return SlowDynamicAPInt(
runOpWithExpandOnOverflow(Val, O.Val, std::mem_fn(&APInt::smul_ov)));
}
SlowDynamicAPInt SlowDynamicAPInt::operator/(const SlowDynamicAPInt &O) const {
return SlowDynamicAPInt(
runOpWithExpandOnOverflow(Val, O.Val, std::mem_fn(&APInt::sdiv_ov)));
}
SlowDynamicAPInt detail::abs(const SlowDynamicAPInt &X) {
return X >= 0 ? X : -X;
}
SlowDynamicAPInt detail::ceilDiv(const SlowDynamicAPInt &LHS,
const SlowDynamicAPInt &RHS) {
if (RHS == -1)
return -LHS;
unsigned Width = getMaxWidth(LHS.Val, RHS.Val);
return SlowDynamicAPInt(APIntOps::RoundingSDiv(
LHS.Val.sext(Width), RHS.Val.sext(Width), APInt::Rounding::UP));
}
SlowDynamicAPInt detail::floorDiv(const SlowDynamicAPInt &LHS,
const SlowDynamicAPInt &RHS) {
if (RHS == -1)
return -LHS;
unsigned Width = getMaxWidth(LHS.Val, RHS.Val);
return SlowDynamicAPInt(APIntOps::RoundingSDiv(
LHS.Val.sext(Width), RHS.Val.sext(Width), APInt::Rounding::DOWN));
}
// The RHS is always expected to be positive, and the result
/// is always non-negative.
SlowDynamicAPInt detail::mod(const SlowDynamicAPInt &LHS,
const SlowDynamicAPInt &RHS) {
assert(RHS >= 1 && "mod is only supported for positive divisors!");
return LHS % RHS < 0 ? LHS % RHS + RHS : LHS % RHS;
}
SlowDynamicAPInt detail::gcd(const SlowDynamicAPInt &A,
const SlowDynamicAPInt &B) {
assert(A >= 0 && B >= 0 && "operands must be non-negative!");
unsigned Width = getMaxWidth(A.Val, B.Val);
return SlowDynamicAPInt(
APIntOps::GreatestCommonDivisor(A.Val.sext(Width), B.Val.sext(Width)));
}
/// Returns the least common multiple of A and B.
SlowDynamicAPInt detail::lcm(const SlowDynamicAPInt &A,
const SlowDynamicAPInt &B) {
SlowDynamicAPInt X = abs(A);
SlowDynamicAPInt Y = abs(B);
return (X * Y) / gcd(X, Y);
}
/// This operation cannot overflow.
SlowDynamicAPInt SlowDynamicAPInt::operator%(const SlowDynamicAPInt &O) const {
unsigned Width = std::max(Val.getBitWidth(), O.Val.getBitWidth());
return SlowDynamicAPInt(Val.sext(Width).srem(O.Val.sext(Width)));
}
SlowDynamicAPInt SlowDynamicAPInt::operator-() const {
if (Val.isMinSignedValue()) {
/// Overflow only occurs when the value is the minimum possible value.
APInt Ret = Val.sext(2 * Val.getBitWidth());
return SlowDynamicAPInt(-Ret);
}
return SlowDynamicAPInt(-Val);
}
/// ---------------------------------------------------------------------------
/// Assignment operators, preincrement, predecrement.
/// ---------------------------------------------------------------------------
SlowDynamicAPInt &SlowDynamicAPInt::operator+=(const SlowDynamicAPInt &O) {
*this = *this + O;
return *this;
}
SlowDynamicAPInt &SlowDynamicAPInt::operator-=(const SlowDynamicAPInt &O) {
*this = *this - O;
return *this;
}
SlowDynamicAPInt &SlowDynamicAPInt::operator*=(const SlowDynamicAPInt &O) {
*this = *this * O;
return *this;
}
SlowDynamicAPInt &SlowDynamicAPInt::operator/=(const SlowDynamicAPInt &O) {
*this = *this / O;
return *this;
}
SlowDynamicAPInt &SlowDynamicAPInt::operator%=(const SlowDynamicAPInt &O) {
*this = *this % O;
return *this;
}
SlowDynamicAPInt &SlowDynamicAPInt::operator++() {
*this += 1;
return *this;
}
SlowDynamicAPInt &SlowDynamicAPInt::operator--() {
*this -= 1;
return *this;
}
/// ---------------------------------------------------------------------------
/// Printing.
/// ---------------------------------------------------------------------------
void SlowDynamicAPInt::print(raw_ostream &OS) const { OS << Val; }
void SlowDynamicAPInt::dump() const { print(dbgs()); }
|
