diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/gimple-fold.cc | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/gcc/gimple-fold.cc b/gcc/gimple-fold.cc index 55e8056..3d46b76 100644 --- a/gcc/gimple-fold.cc +++ b/gcc/gimple-fold.cc @@ -5370,10 +5370,10 @@ arith_overflowed_p (enum tree_code code, const_tree type, return wi::min_precision (wres, sign) > TYPE_PRECISION (type); } -/* If IFN_{MASK,LEN}_LOAD/STORE call CALL is unconditional, return a MEM_REF - for the memory it references, otherwise return null. VECTYPE is the - type of the memory vector. MASK_P indicates it's for MASK if true, - otherwise it's for LEN. */ +/* If IFN_{MASK,LEN,LEN_MASK}_LOAD/STORE call CALL is unconditional, + return a MEM_REF for the memory it references, otherwise return null. + VECTYPE is the type of the memory vector. MASK_P indicates it's for + MASK if true, otherwise it's for LEN. */ static tree gimple_fold_partial_load_store_mem_ref (gcall *call, tree vectype, bool mask_p) @@ -5400,6 +5400,16 @@ gimple_fold_partial_load_store_mem_ref (gcall *call, tree vectype, bool mask_p) if (maybe_ne (wi::to_poly_widest (basic_len) - wi::to_widest (bias), GET_MODE_SIZE (TYPE_MODE (vectype)))) return NULL_TREE; + + /* For LEN_MASK_{LOAD,STORE}, we should also check whether + the mask is all ones mask. */ + internal_fn ifn = gimple_call_internal_fn (call); + if (ifn == IFN_LEN_MASK_LOAD || ifn == IFN_LEN_MASK_STORE) + { + tree mask = gimple_call_arg (call, internal_fn_mask_index (ifn)); + if (!integer_all_onesp (mask)) + return NULL_TREE; + } } unsigned HOST_WIDE_INT align = tree_to_uhwi (alias_align); @@ -5438,7 +5448,8 @@ static bool gimple_fold_partial_store (gimple_stmt_iterator *gsi, gcall *call, bool mask_p) { - tree rhs = gimple_call_arg (call, 3); + internal_fn ifn = gimple_call_internal_fn (call); + tree rhs = gimple_call_arg (call, internal_fn_stored_value_index (ifn)); if (tree lhs = gimple_fold_partial_load_store_mem_ref (call, TREE_TYPE (rhs), mask_p)) { @@ -5676,9 +5687,11 @@ gimple_fold_call (gimple_stmt_iterator *gsi, bool inplace) changed |= gimple_fold_partial_store (gsi, stmt, true); break; case IFN_LEN_LOAD: + case IFN_LEN_MASK_LOAD: changed |= gimple_fold_partial_load (gsi, stmt, false); break; case IFN_LEN_STORE: + case IFN_LEN_MASK_STORE: changed |= gimple_fold_partial_store (gsi, stmt, false); break; default: |