VECT: Fix ICE of variable stride on strieded load/store with SELECT_VL loop control.

Hi, Richi.

Sorry for making mistake on LEN_MASK_GATHER_LOAD/LEN_MASK_SCATTER_STORE
with SELECT_VL loop control.

Consider this following case:
  void __attribute__ ((noinline, noclone))                                     \
  f_##DATA_TYPE##_##BITS (DATA_TYPE *restrict dest, DATA_TYPE *restrict src,   \
			  INDEX##BITS stride, INDEX##BITS n)                   \
  {                                                                            \
    for (INDEX##BITS i = 0; i < n; ++i)                                        \
      dest[i] += src[i * stride];                                              \
  }

When "stride" is a constant, current flow works fine.
However, when "stride" is a variable. It causes an ICE:
...
_96 = .SELECT_VL (ivtmp_94, 4);
...
ivtmp_78 = ((sizetype) _39 * (sizetype) _96) * 4;
vect__11.69_87 = .LEN_MASK_GATHER_LOAD (vectp_src.67_85, _84, 4, { 0, 0, 0, 0 }, { -1, -1, -1, -1 }, _96, 0);
...
vectp_src.67_86 = vectp_src.67_85 + ivtmp_78;

Becase the IR: ivtmp_78 = ((sizetype) _39 * (sizetype) _96) * 4;

Instead, I split the IR into:

step_stride = _39
step = step_stride * 4
ivtmp_78 = step * _96

Thanks.

gcc/ChangeLog:

	* tree-vect-stmts.cc (vect_get_strided_load_store_ops): Fix ICE.

0 files changed, 0 insertions, 0 deletions