Viewing file:  vshift-6.c (1.53 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* { dg-do compile } */
/* { dg-options "-Wshift-count-negative -Wshift-count-overflow" } */
typedef unsigned int v1qi_t __attribute__((mode(QI), vector_size(1)));
typedef unsigned int v1hi_t __attribute__((mode(HI), vector_size(2)));
typedef unsigned int v1si_t __attribute__((mode(SI), vector_size(4)));
v1qi_t test1qi(v1qi_t x, int c) {
switch(c) {
case 0: return x << -1; /* { dg-warning "shift count is negative" } */
case 1: return x << 7;
case 2: return x << 8; /* { dg-warning "shift count >= width" } */
case ~0: return x >> -1; /* { dg-warning "shift count is negative" } */
case ~1: return x >> 7;
case ~2: return x >> 8; /* { dg-warning "shift count >= width" } */
}
return c < 0 ? x >> -c : x << c;
}
v1hi_t test1hi(v1hi_t x, int c) {
switch(c) {
case 0: return x << -1; /* { dg-warning "shift count is negative" } */
case 1: return x << 15;
case 2: return x << 16; /* { dg-warning "shift count >= width" } */
case ~0: return x >> -1; /* { dg-warning "shift count is negative" } */
case ~1: return x >> 15;
case ~2: return x >> 16; /* { dg-warning "shift count >= width" } */
}
return c < 0 ? x >> -c : x << c;
}
v1si_t test1si(v1si_t x, int c) {
switch(c) {
case 0: return x << -1; /* { dg-warning "shift count is negative" } */
case 1: return x << 31;
case 2: return x << 32; /* { dg-warning "shift count >= width" } */
case ~0: return x >> -1; /* { dg-warning "shift count is negative" } */
case ~1: return x >> 31;
case ~2: return x >> 32; /* { dg-warning "shift count >= width" } */
}
return c < 0 ? x >> -c : x << c;
}
|
