Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/vshift-6.c @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 04ced10e8804 |
children |
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/* { 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; }