blob: be52cf7dedcaa675c89e690e484f507c08ecf1e5 (
plain)
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
|
/* Test case for SHIFT_COUNT_TRUNCATED on Loongson. */
/* { dg-do run } */
/* loongson.h does not handle or check for MIPS16ness. There doesn't
seem any good reason for it to, given that the Loongson processors
do not support MIPS16. */
/* { dg-options "isa=loongson -mhard-float -mno-mips16 -O1" } */
#include "loongson.h"
#include <assert.h>
typedef union { int32x2_t v; int32_t a[2]; } int32x2_encap_t;
void
main1 (int shift)
{
int32x2_encap_t s;
int32x2_encap_t r;
s.a[0] = 0xffffffff;
s.a[1] = 0xffffffff;
/* Loongson SIMD use low-order 7 bits to specify the shift amount.
Thus V2SI << 0x40 == 0. The below expression 'shift & 0x3f' will be
mis-optimized as 'shift', if SHIFT_COUNT_TRUNCATED is nonzero. */
r.v = psllw_s (s.v, (shift & 0x3f));
assert (r.a[0] == 0xffffffff);
assert (r.a[1] == 0xffffffff);
}
int
main (void)
{
main1 (0x40);
return 0;
}
|
