1
2
3
4
5 package ssa
6
7 import "testing"
8
9
10
11 func TestMove(t *testing.T) {
12 x := [...]byte{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}
13 copy(x[1:], x[:])
14 for i := 1; i < len(x); i++ {
15 if int(x[i]) != i {
16 t.Errorf("Memmove got converted to OpMove in alias-unsafe way. Got %d instead of %d in position %d", int(x[i]), i, i+1)
17 }
18 }
19 }
20
21 func TestMoveSmall(t *testing.T) {
22 x := [...]byte{1, 2, 3, 4, 5, 6, 7}
23 copy(x[1:], x[:])
24 for i := 1; i < len(x); i++ {
25 if int(x[i]) != i {
26 t.Errorf("Memmove got converted to OpMove in alias-unsafe way. Got %d instead of %d in position %d", int(x[i]), i, i+1)
27 }
28 }
29 }
30
31 func TestSubFlags(t *testing.T) {
32 if !subFlags32(0, 1).lt() {
33 t.Errorf("subFlags32(0,1).lt() returned false")
34 }
35 if !subFlags32(0, 1).ult() {
36 t.Errorf("subFlags32(0,1).ult() returned false")
37 }
38 }
39
40 func TestIsPPC64WordRotateMask(t *testing.T) {
41 tests := []struct {
42 input int64
43 expected bool
44 }{
45 {0x00000001, true},
46 {0x80000001, true},
47 {0x80010001, false},
48 {0xFFFFFFFA, false},
49 {0xF0F0F0F0, false},
50 {0xFFFFFFFD, true},
51 {0x80000000, true},
52 {0x00000000, false},
53 {0xFFFFFFFF, true},
54 {0x0000FFFF, true},
55 {0xFF0000FF, true},
56 {0x00FFFF00, true},
57 }
58
59 for _, v := range tests {
60 if v.expected != isPPC64WordRotateMask(v.input) {
61 t.Errorf("isPPC64WordRotateMask(0x%x) failed", v.input)
62 }
63 }
64 }
65
66 func TestEncodeDecodePPC64WordRotateMask(t *testing.T) {
67 tests := []struct {
68 rotate int64
69 mask uint64
70 nbits,
71 mb,
72 me,
73 encoded int64
74 }{
75 {1, 0x00000001, 32, 31, 31, 0x20011f20},
76 {2, 0x80000001, 32, 31, 0, 0x20021f01},
77 {3, 0xFFFFFFFD, 32, 31, 29, 0x20031f1e},
78 {4, 0x80000000, 32, 0, 0, 0x20040001},
79 {5, 0xFFFFFFFF, 32, 0, 31, 0x20050020},
80 {6, 0x0000FFFF, 32, 16, 31, 0x20061020},
81 {7, 0xFF0000FF, 32, 24, 7, 0x20071808},
82 {8, 0x00FFFF00, 32, 8, 23, 0x20080818},
83
84 {9, 0x0000000000FFFF00, 64, 40, 55, 0x40092838},
85 {10, 0xFFFF000000000000, 64, 0, 15, 0x400A0010},
86 {10, 0xFFFF000000000001, 64, 63, 15, 0x400A3f10},
87 }
88
89 for i, v := range tests {
90 result := encodePPC64RotateMask(v.rotate, int64(v.mask), v.nbits)
91 if result != v.encoded {
92 t.Errorf("encodePPC64RotateMask(%d,0x%x,%d) = 0x%x, expected 0x%x", v.rotate, v.mask, v.nbits, result, v.encoded)
93 }
94 rotate, mb, me, mask := DecodePPC64RotateMask(result)
95 if rotate != v.rotate || mb != v.mb || me != v.me || mask != v.mask {
96 t.Errorf("DecodePPC64Failure(Test %d) got (%d, %d, %d, %x) expected (%d, %d, %d, %x)", i, rotate, mb, me, mask, v.rotate, v.mb, v.me, v.mask)
97 }
98 }
99 }
100
101 func TestMergePPC64ClrlsldiSrw(t *testing.T) {
102 tests := []struct {
103 clrlsldi int32
104 srw int64
105 valid bool
106 rotate int64
107 mask uint64
108 }{
109
110 {newPPC64ShiftAuxInt(4, 56, 63, 64), 4, true, 0, 0xFF0},
111
112 {newPPC64ShiftAuxInt(4, 48, 63, 64), 4, true, 0, 0xFFFF0},
113
114 {newPPC64ShiftAuxInt(17, 48, 63, 64), 4, false, 0, 0},
115
116 {newPPC64ShiftAuxInt(16, 48, 63, 64), 4, true, 12, 0xFFFF0000},
117
118 {newPPC64ShiftAuxInt(17, 48, 63, 64), 32, false, 0, 0},
119 }
120 for i, v := range tests {
121 result := mergePPC64ClrlsldiSrw(int64(v.clrlsldi), v.srw)
122 if v.valid && result == 0 {
123 t.Errorf("mergePPC64ClrlsldiSrw(Test %d) did not merge", i)
124 } else if !v.valid && result != 0 {
125 t.Errorf("mergePPC64ClrlsldiSrw(Test %d) should return 0", i)
126 } else if r, _, _, m := DecodePPC64RotateMask(result); v.rotate != r || v.mask != m {
127 t.Errorf("mergePPC64ClrlsldiSrw(Test %d) got (%d,0x%x) expected (%d,0x%x)", i, r, m, v.rotate, v.mask)
128 }
129 }
130 }
131
132 func TestMergePPC64ClrlsldiRlwinm(t *testing.T) {
133 tests := []struct {
134 clrlsldi int32
135 rlwinm int64
136 valid bool
137 rotate int64
138 mask uint64
139 }{
140
141 {newPPC64ShiftAuxInt(4, 56, 63, 64), encodePPC64RotateMask(4, 0xFF00, 32), false, 0, 0},
142
143 {newPPC64ShiftAuxInt(4, 56, 63, 64), encodePPC64RotateMask(28, 0x0FFFFFFF, 32), true, 0, 0xFF0},
144
145 {newPPC64ShiftAuxInt(4, 48, 63, 64), encodePPC64RotateMask(28, 0xFFFF, 32), true, 0, 0xFFFF0},
146
147 {newPPC64ShiftAuxInt(17, 48, 63, 64), encodePPC64RotateMask(28, 0xFFFF, 32), false, 0, 0},
148
149 {newPPC64ShiftAuxInt(16, 48, 63, 64), encodePPC64RotateMask(28, 0xFFFF, 32), true, 12, 0xFFFF0000},
150
151 {newPPC64ShiftAuxInt(16, 48, 63, 64), encodePPC64RotateMask(28, 0xF000FFFF, 32), true, 12, 0xFFFF0000},
152 }
153 for i, v := range tests {
154 result := mergePPC64ClrlsldiRlwinm(v.clrlsldi, v.rlwinm)
155 if v.valid && result == 0 {
156 t.Errorf("mergePPC64ClrlsldiRlwinm(Test %d) did not merge", i)
157 } else if !v.valid && result != 0 {
158 t.Errorf("mergePPC64ClrlsldiRlwinm(Test %d) should return 0", i)
159 } else if r, _, _, m := DecodePPC64RotateMask(result); v.rotate != r || v.mask != m {
160 t.Errorf("mergePPC64ClrlsldiRlwinm(Test %d) got (%d,0x%x) expected (%d,0x%x)", i, r, m, v.rotate, v.mask)
161 }
162 }
163 }
164
165 func TestMergePPC64SldiSrw(t *testing.T) {
166 tests := []struct {
167 sld int64
168 srw int64
169 valid bool
170 rotate int64
171 mask uint64
172 }{
173 {4, 4, true, 0, 0xFFFFFFF0},
174 {4, 8, true, 28, 0x0FFFFFF0},
175 {0, 0, true, 0, 0xFFFFFFFF},
176 {8, 4, false, 0, 0},
177 {0, 32, false, 0, 0},
178 {0, 31, true, 1, 0x1},
179 {31, 31, true, 0, 0x80000000},
180 {32, 32, false, 0, 0},
181 }
182 for i, v := range tests {
183 result := mergePPC64SldiSrw(v.sld, v.srw)
184 if v.valid && result == 0 {
185 t.Errorf("mergePPC64SldiSrw(Test %d) did not merge", i)
186 } else if !v.valid && result != 0 {
187 t.Errorf("mergePPC64SldiSrw(Test %d) should return 0", i)
188 } else if r, _, _, m := DecodePPC64RotateMask(result); v.rotate != r || v.mask != m {
189 t.Errorf("mergePPC64SldiSrw(Test %d) got (%d,0x%x) expected (%d,0x%x)", i, r, m, v.rotate, v.mask)
190 }
191 }
192 }
193
194 func TestMergePPC64AndSrwi(t *testing.T) {
195 tests := []struct {
196 and int64
197 srw int64
198 valid bool
199 rotate int64
200 mask uint64
201 }{
202 {0x000000FF, 8, true, 24, 0xFF},
203 {0xF00000FF, 8, true, 24, 0xFF},
204 {0x0F0000FF, 4, false, 0, 0},
205 {0x00000000, 4, false, 0, 0},
206 {0xF0000000, 4, false, 0, 0},
207 {0xF0000000, 32, false, 0, 0},
208 {0xFFFFFFFF, 0, true, 0, 0xFFFFFFFF},
209 }
210 for i, v := range tests {
211 result := mergePPC64AndSrwi(v.and, v.srw)
212 if v.valid && result == 0 {
213 t.Errorf("mergePPC64AndSrwi(Test %d) did not merge", i)
214 } else if !v.valid && result != 0 {
215 t.Errorf("mergePPC64AndSrwi(Test %d) should return 0", i)
216 } else if r, _, _, m := DecodePPC64RotateMask(result); v.rotate != r || v.mask != m {
217 t.Errorf("mergePPC64AndSrwi(Test %d) got (%d,0x%x) expected (%d,0x%x)", i, r, m, v.rotate, v.mask)
218 }
219 }
220 }
221
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