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Diffstat (limited to 'gcc/tree-vect-analyze.c')
| -rw-r--r-- | gcc/tree-vect-analyze.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/tree-vect-analyze.c b/gcc/tree-vect-analyze.c index d1b274b56ec..df2e88282cf 100644 --- a/gcc/tree-vect-analyze.c +++ b/gcc/tree-vect-analyze.c @@ -1013,6 +1013,13 @@ vect_enhance_data_refs_alignment (loop_vec_info loop_vinfo) struct data_reference *dr0 = NULL; unsigned int i, j; + /* Sigh, a hack to make targets that do not define UNITS_PER_SIMD_WORD + bootstrap. Copy UNITS_PER_SIMD_WORD to a local variable to avoid a + "division by zero" error. This error would be issued because we + we do "... % UNITS_PER_SIMD_WORD" below, and UNITS_PER_SIMD_WORD + defaults to 0 if it is not defined by the target. */ + int units_per_simd_word = UNITS_PER_SIMD_WORD; + /* This pass will require a cost model to guide it whether to apply peeling or versioning or a combination of the two. For example, the scheme that @@ -1167,7 +1174,7 @@ vect_enhance_data_refs_alignment (loop_vec_info loop_vinfo) int drsize = GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (DR_REF (dr)))); DR_MISALIGNMENT (dr) += npeel * drsize; - DR_MISALIGNMENT (dr) %= UNITS_PER_SIMD_WORD; + DR_MISALIGNMENT (dr) %= units_per_simd_word; } else DR_MISALIGNMENT (dr) = -1; |