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
|
/*
Test of vec_xl_sext and vec_xl_zext (load into rightmost
vector element and zero/sign extend). */
/* { dg-do run { target power10_hw } } */
/* { dg-do compile { target { ! power10_hw } } } */
/* { dg-require-effective-target power10_ok } */
/* { dg-require-effective-target int128 } */
/* { dg-options "-mdejagnu-cpu=power10 -O3 -save-temps" } */
/* At time of writing, we also geenerate a .constrprop copy
of the function, so our instruction hit count is
twice of what we would otherwise expect. */
/* { dg-final { scan-assembler-times {\mlxvrdx\M} 4 } } */
/* { dg-final { scan-assembler-times {\mlvdx\M} 0 } } */
#define NUM_VEC_ELEMS 2
#define ITERS 16
/*
Codegen at time of writing uses lxvrdx for both sign and
zero extend tests. The sign extended test also uses
mfvsr*d, mtvsrdd, vextsd2q.
0000000010000c90 <test_sign_extended_load>:
10000c90: da 18 04 7c lxvrdx vs0,r4,r3
10000c94: 66 00 0b 7c mfvsrd r11,vs0
10000c98: 66 02 0a 7c mfvsrld r10,vs0
10000c9c: 67 53 40 7c mtvsrdd vs34,0,r10
10000ca0: 02 16 5b 10 vextsd2q v2,v2
10000ca4: 20 00 80 4e blr
0000000010000cc0 <test_zero_extended_unsigned_load>:
10000cc0: db 18 44 7c lxvrdx vs34,r4,r3
10000cc4: 20 00 80 4e blr
*/
#include <altivec.h>
#include <stdio.h>
#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
long long buffer[8];
unsigned long verbose=0;
char initbuffer[64] = {
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x80,
0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0x90,
0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xa0,
0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xb0
};
vector signed __int128 signed_expected[16] = {
{ (__int128) 0x0000000000000000 << 64 | (__int128) 0x1817161514131211},
{ (__int128) 0xffffffffffffffff << 64 | (__int128) 0x8918171615141312},
{ (__int128) 0xffffffffffffffff << 64 | (__int128) 0x8a89181716151413},
{ (__int128) 0xffffffffffffffff << 64 | (__int128) 0x8b8a891817161514},
{ (__int128) 0xffffffffffffffff << 64 | (__int128) 0x8c8b8a8918171615},
{ (__int128) 0xffffffffffffffff << 64 | (__int128) 0x8d8c8b8a89181716},
{ (__int128) 0xffffffffffffffff << 64 | (__int128) 0x8e8d8c8b8a891817},
{ (__int128) 0xffffffffffffffff << 64 | (__int128) 0x8f8e8d8c8b8a8918},
{ (__int128) 0xffffffffffffffff << 64 | (__int128) 0x808f8e8d8c8b8a89},
{ (__int128) 0x0000000000000000 << 64 | (__int128) 0x21808f8e8d8c8b8a},
{ (__int128) 0x0000000000000000 << 64 | (__int128) 0x2221808f8e8d8c8b},
{ (__int128) 0x0000000000000000 << 64 | (__int128) 0x232221808f8e8d8c},
{ (__int128) 0x0000000000000000 << 64 | (__int128) 0x24232221808f8e8d},
{ (__int128) 0x0000000000000000 << 64 | (__int128) 0x2524232221808f8e},
{ (__int128) 0x0000000000000000 << 64 | (__int128) 0x262524232221808f},
{ (__int128) 0x0000000000000000 << 64 | (__int128) 0x2726252423222180}
};
vector unsigned __int128 unsigned_expected[16] = {
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x1817161514131211},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x8918171615141312},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x8a89181716151413},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x8b8a891817161514},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x8c8b8a8918171615},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x8d8c8b8a89181716},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x8e8d8c8b8a891817},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x8f8e8d8c8b8a8918},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x808f8e8d8c8b8a89},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x21808f8e8d8c8b8a},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x2221808f8e8d8c8b},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x232221808f8e8d8c},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x24232221808f8e8d},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x2524232221808f8e},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x262524232221808f},
{ (unsigned __int128) 0x0000000000000000 << 64 | (unsigned __int128) 0x2726252423222180}
};
__attribute__ ((noinline))
vector signed __int128 test_sign_extended_load(int RA, signed long long * RB) {
return vec_xl_sext (RA, RB);
}
__attribute__ ((noinline))
vector unsigned __int128 test_zero_extended_unsigned_load(int RA, unsigned long long * RB) {
return vec_xl_zext (RA, RB);
}
int main (int argc, char *argv [])
{
int iteration=0;
int mismatch=0;
vector signed __int128 signed_result_v;
vector unsigned __int128 unsigned_result_v;
#if VERBOSE
verbose=1;
printf("%s %s\n", __DATE__, __TIME__);
#endif
memcpy(&buffer, &initbuffer, sizeof(buffer));
if (verbose) {
printf("input buffer:\n");
for (int k=0;k<64;k++) {
printf("%x ",initbuffer[k]);
if (k && (k+1)%16==0) printf("\n");
}
printf("signed_expected:\n");
for (int k=0;k<ITERS;k++) {
printf("%llx ",signed_expected[iteration][0]>>64);
printf(" %llx \n",signed_expected[iteration][0]&0xffffffffffffffff);
printf("\n");
}
printf("unsigned_expected:\n");
for (int k=0;k<ITERS;k++) {
printf("%llx ",signed_expected[iteration][0]>>64);
printf(" %llx \n",signed_expected[iteration][0]&0xffffffffffffffff);
printf("\n");
}
}
for (iteration = 0; iteration < ITERS ; iteration++ ) {
signed_result_v = test_sign_extended_load (iteration, (signed long long*)buffer);
if (signed_result_v[0] != signed_expected[iteration][0] ) {
mismatch++;
printf("Unexpected results from signed load. i=%d \n", iteration);
printf("got: %llx ",signed_result_v[0]>>64);
printf(" %llx \n",signed_result_v[0]&0xffffffffffffffff);
printf("expected: %llx ",signed_expected[iteration][0]>>64);
printf(" %llx \n",signed_expected[iteration][0]&0xffffffffffffffff);
fflush(stdout);
}
}
for (iteration = 0; iteration < ITERS ; iteration++ ) {
unsigned_result_v = test_zero_extended_unsigned_load (iteration, (unsigned long long*)buffer);
if (unsigned_result_v[0] != unsigned_expected[iteration][0]) {
mismatch++;
printf("Unexpected results from unsigned load. i=%d \n", iteration);
printf("got: %llx ",unsigned_result_v[0]>>64);
printf(" %llx \n",unsigned_result_v[0]&0xffffffffffffffff);
printf("expected: %llx ",unsigned_expected[iteration][0]>>64);
printf(" %llx \n",unsigned_expected[iteration][0]&0xffffffffffffffff);
fflush(stdout);
}
}
if (mismatch) {
printf("%d mismatches. \n",mismatch);
abort();
}
return 0;
}
|
