[Bug target/40957] New: standard_sse_constant_opcode crash on x86 64

["dps at simpson dot demon dot co dot uk" <gcc-bugzilla at gcc dot gnu dot org>]

The following code, which is a trimmed version of a preprocessed glibc test
case (which also fails) calls standard_sse_constant_opcode with a case which is
not implemenetd. Hence the slightly strange code, The precise version of gcc is
4.5.0 20090731 (experimental). The bugs works with gcc -O[123s] -mavx. gcc -O0
-mavx is not affected.

I think this is a bug in the i386 driver, which fails to realise this case is
possible, but really do not know enough about this area to be absolutely
certain.


typedef unsigned int uint32_t;
typedef unsigned long int uint64_t;
typedef unsigned long int ulong;
typedef unsigned int uint;
typedef unsigned int u_int32_t __attribute__ ((__mode__ (__SI__)));
typedef uint32_t Elf_Symndx;
typedef float La_x86_64_xmm __attribute__ ((__vector_size__ (16)));
typedef float La_x86_64_ymm __attribute__ ((__vector_size__ (32)));
typedef union
{
  La_x86_64_ymm ymm[2];
  La_x86_64_xmm xmm[4];
} La_x86_64_vector __attribute__ ((aligned(16)));
typedef struct La_x86_64_retval
{
  uint64_t lrv_rax;
  uint64_t lrv_rdx;
  La_x86_64_xmm lrv_xmm0;
  La_x86_64_xmm lrv_xmm1;
  long double lrv_st0;
  long double lrv_st1;
  La_x86_64_vector lrv_vector0;
  La_x86_64_vector lrv_vector1;
} La_x86_64_retval;
typedef int __v8si __attribute__ ((__vector_size__ (32)));
typedef long long __m256i __attribute__ ((__vector_size__ (32),
       __may_alias__));
extern __inline __m256i __attribute__((__gnu_inline__, __always_inline__,
__artificial__))
_mm256_set1_epi32 (int __A)
{
  return __extension__ (__m256i)(__v8si){ __A, __A, __A, __A,
       __A, __A, __A, __A };
}
# 7 "tst-auditmod4b.c" 1
unsigned int
x_pltexit (La_x86_64_retval *outregs)
{
    __m256i ymm = _mm256_set1_epi32 (-1);
    asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
  return 0;
}


-- 
           Summary: standard_sse_constant_opcode crash on x86 64
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dps at simpson dot demon dot co dot uk
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40957