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Diffstat (limited to 'gcc-4.9/gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc-4.9/gcc/tree-vect-data-refs.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/gcc-4.9/gcc/tree-vect-data-refs.c b/gcc-4.9/gcc/tree-vect-data-refs.c index 274cdbdcf..6622bd84d 100644 --- a/gcc-4.9/gcc/tree-vect-data-refs.c +++ b/gcc-4.9/gcc/tree-vect-data-refs.c @@ -373,11 +373,14 @@ vect_analyze_data_ref_dependence (struct data_dependence_relation *ddr, .. = a[i+1]; where we will end up loading { a[i], a[i+1] } once, make sure that inserting group loads before the first load and - stores after the last store will do the right thing. */ - if ((STMT_VINFO_GROUPED_ACCESS (stmtinfo_a) - && GROUP_SAME_DR_STMT (stmtinfo_a)) - || (STMT_VINFO_GROUPED_ACCESS (stmtinfo_b) - && GROUP_SAME_DR_STMT (stmtinfo_b))) + stores after the last store will do the right thing. + Similar for groups like + a[i] = ...; + ... = a[i]; + a[i+1] = ...; + where loads from the group interleave with the store. */ + if (STMT_VINFO_GROUPED_ACCESS (stmtinfo_a) + || STMT_VINFO_GROUPED_ACCESS (stmtinfo_b)) { gimple earlier_stmt; earlier_stmt = get_earlier_stmt (DR_STMT (dra), DR_STMT (drb)); |