diff options
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 33 |
1 files changed, 30 insertions, 3 deletions
@@ -4296,6 +4296,36 @@ expand_assignment (tree to, tree from, bool nontemporal) return; } + else if (TREE_CODE (to) == MISALIGNED_INDIRECT_REF) + { + enum machine_mode mode, op_mode1; + enum insn_code icode; + rtx reg, addr, mem, insn; + + reg = expand_expr (from, NULL_RTX, VOIDmode, EXPAND_NORMAL); + reg = force_not_mem (reg); + + mode = TYPE_MODE (TREE_TYPE (to)); + addr = expand_expr (TREE_OPERAND (to, 0), NULL_RTX, VOIDmode, + EXPAND_SUM); + addr = memory_address (mode, addr); + mem = gen_rtx_MEM (mode, addr); + + set_mem_attributes (mem, to, 0); + + icode = movmisalign_optab->handlers[mode].insn_code; + gcc_assert (icode != CODE_FOR_nothing); + + op_mode1 = insn_data[icode].operand[1].mode; + if (! (*insn_data[icode].operand[1].predicate) (reg, op_mode1) + && op_mode1 != VOIDmode) + reg = copy_to_mode_reg (op_mode1, reg); + + insn = GEN_FCN (icode) (mem, reg); + emit_insn (insn); + return; + } + /* If the rhs is a function call and its value is not an aggregate, call the function before we start to compute the lhs. This is needed for correct code for cases such as @@ -7575,9 +7605,6 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode, /* Resolve the misalignment now, so that we don't have to remember to resolve it later. Of course, this only works for reads. */ - /* ??? When we get around to supporting writes, we'll have to handle - this in store_expr directly. The vectorizer isn't generating - those yet, however. */ if (code == MISALIGNED_INDIRECT_REF) { int icode; |