https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89229
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-cfl-1 gcc]$ cat
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gcc.target/i386/pr89029-1.c
/* { dg-do assemble { target { avx512bw && avx512vl } } } */
/* { dg-options "-O1 -mavx512bw -mavx512vl -mtune=skylake-avx512" } */
extern void abort (void);
extern void exit (int);
struct s { unsigned char a[256]; };
union u { struct { struct s b; int c; } d; struct { int c; struct s b; } e; };
static union u v;
static union u v0;
static struct s *p = &v.d.b;
static struct s *q = &v.e.b;
static inline struct s rp (void) { return *p; }
static inline struct s rq (void) { return *q; }
static void pq (void) { *p = rq(); }
static void qp (void) { *q = rp(); }
static void
init (struct s *sp)
{
int i;
for (i = 0; i < 256; i++)
sp->a[i] = i;
}
static void
check (struct s *sp)
{
int i;
for (i = 0; i < 256; i++)
if (sp->a[i] != i)
abort ();
}
void
main_test (void)
{
v = v0;
init (p);
qp ();
check (q);
v = v0;
init (q);
pq ();
check (p);
exit (0);
}
[hjl@gnu-cfl-1 gcc]$ ./xgcc -B./ -c -O1 -mavx512bw -mavx512vl
/export/gnu/import/git/gitlab/x86-gcc/gcc/testsuite/gcc.target/i386/pr89029-1.c
-march=skylake-avx512
/tmp/ccqZUBNW.s: Assembler messages:
/tmp/ccqZUBNW.s:34: Error: unsupported instruction `vmovdqa'
/tmp/ccqZUBNW.s:35: Error: unsupported instruction `vmovdqa'
/tmp/ccqZUBNW.s:36: Error: unsupported instruction `vmovdqa'
[hjl@gnu-cfl-1 gcc]$
