| /* { dg-do compile } */ |
| /* { dg-options "-O1 -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))); |
| |
| static const signed shift_neg = -1; |
| static const unsigned shift_qi = 8; |
| static const unsigned shift_hi = 16; |
| static const unsigned shift_si = 32; |
| |
| v1qi_t test1qi(v1qi_t x, int c) { |
| switch(c) { |
| case 0: return x << shift_neg; /* { dg-warning "shift count is negative" } */ |
| case 1: return x << (shift_qi - 1); |
| case 2: return x << shift_qi; /* { dg-warning "shift count >= width" } */ |
| case ~0: return x >> shift_neg; /* { dg-warning "shift count is negative" } */ |
| case ~1: return x >> (shift_qi - 1); |
| case ~2: return x >> shift_qi; /* { 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 << shift_neg; /* { dg-warning "shift count is negative" } */ |
| case 1: return x << (shift_hi - 1); |
| case 2: return x << shift_hi; /* { dg-warning "shift count >= width" } */ |
| case ~0: return x >> shift_neg; /* { dg-warning "shift count is negative" } */ |
| case ~1: return x >> (shift_hi - 1); |
| case ~2: return x >> shift_hi; /* { 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 << shift_neg; /* { dg-warning "shift count is negative" } */ |
| case 1: return x << (shift_si - 1); |
| case 2: return x << shift_si; /* { dg-warning "shift count >= width" } */ |
| case ~0: return x >> shift_neg; /* { dg-warning "shift count is negative" } */ |
| case ~1: return x >> (shift_si - 1); |
| case ~2: return x >> shift_si; /* { dg-warning "shift count >= width" } */ |
| } |
| return c < 0 ? x >> -c : x << c; |
| } |