diff options
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/expr.c | 71 |
2 files changed, 18 insertions, 61 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 68bb5b1..e01bd4b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2012-03-14 Martin Jambor <mjambor@suse.cz> + + * expr.c (expand_assignment): Use expand_expr with EXPAND_WRITE + when expanding MEM_REFs, MEM_TARGET_REFs and handled_component + bases. + (expand_expr_real_1): Do not handle misalignment if modifier is + EXPAND_WRITE. + 2012-03-14 Richard Guenther <rguenther@suse.de> PR middle-end/52584 @@ -4530,49 +4530,16 @@ expand_assignment (tree to, tree from, bool nontemporal) != CODE_FOR_nothing) || SLOW_UNALIGNED_ACCESS (mode, align))) { - addr_space_t as - = TYPE_ADDR_SPACE (TREE_TYPE (TREE_TYPE (TREE_OPERAND (to, 0)))); - struct expand_operand ops[2]; - enum machine_mode address_mode; - rtx reg, op0, mem; + rtx reg, mem; reg = expand_expr (from, NULL_RTX, VOIDmode, EXPAND_NORMAL); reg = force_not_mem (reg); - - if (TREE_CODE (to) == MEM_REF) - { - tree base = TREE_OPERAND (to, 0); - address_mode = targetm.addr_space.address_mode (as); - op0 = expand_expr (base, NULL_RTX, VOIDmode, EXPAND_NORMAL); - op0 = convert_memory_address_addr_space (address_mode, op0, as); - if (!integer_zerop (TREE_OPERAND (to, 1))) - { - rtx off - = immed_double_int_const (mem_ref_offset (to), address_mode); - op0 = simplify_gen_binary (PLUS, address_mode, op0, off); - } - op0 = memory_address_addr_space (mode, op0, as); - mem = gen_rtx_MEM (mode, op0); - set_mem_attributes (mem, to, 0); - set_mem_addr_space (mem, as); - } - else if (TREE_CODE (to) == TARGET_MEM_REF) - { - struct mem_address addr; - get_address_description (to, &addr); - op0 = addr_for_mem_ref (&addr, as, true); - op0 = memory_address_addr_space (mode, op0, as); - mem = gen_rtx_MEM (mode, op0); - set_mem_attributes (mem, to, 0); - set_mem_addr_space (mem, as); - } - else - gcc_unreachable (); - if (TREE_THIS_VOLATILE (to)) - MEM_VOLATILE_P (mem) = 1; + mem = expand_expr (to, NULL_RTX, VOIDmode, EXPAND_WRITE); if (icode != CODE_FOR_nothing) { + struct expand_operand ops[2]; + create_fixed_operand (&ops[0], mem); create_input_operand (&ops[1], reg, mode); /* The movmisalign<mode> pattern cannot fail, else the assignment @@ -4624,31 +4591,11 @@ expand_assignment (tree to, tree from, bool nontemporal) && ((icode = optab_handler (movmisalign_optab, mode)) != CODE_FOR_nothing)) { - enum machine_mode address_mode; - rtx op0; struct expand_operand ops[2]; - addr_space_t as = TYPE_ADDR_SPACE - (TREE_TYPE (TREE_TYPE (TREE_OPERAND (tem, 0)))); - tree base = TREE_OPERAND (tem, 0); misalignp = true; to_rtx = gen_reg_rtx (mode); - - address_mode = targetm.addr_space.address_mode (as); - op0 = expand_expr (base, NULL_RTX, VOIDmode, EXPAND_NORMAL); - op0 = convert_memory_address_addr_space (address_mode, op0, as); - if (!integer_zerop (TREE_OPERAND (tem, 1))) - { - rtx off = immed_double_int_const (mem_ref_offset (tem), - address_mode); - op0 = simplify_gen_binary (PLUS, address_mode, op0, off); - } - op0 = memory_address_addr_space (mode, op0, as); - mem = gen_rtx_MEM (mode, op0); - set_mem_attributes (mem, tem, 0); - set_mem_addr_space (mem, as); - if (TREE_THIS_VOLATILE (tem)) - MEM_VOLATILE_P (mem) = 1; + mem = expand_expr (tem, NULL_RTX, VOIDmode, EXPAND_WRITE); /* If the misaligned store doesn't overwrite all bits, perform rmw cycle on MEM. */ @@ -4666,7 +4613,7 @@ expand_assignment (tree to, tree from, bool nontemporal) else { misalignp = false; - to_rtx = expand_normal (tem); + to_rtx = expand_expr (tem, NULL_RTX, VOIDmode, EXPAND_WRITE); } /* If the bitfield is volatile, we want to access it in the @@ -9302,7 +9249,8 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode, set_mem_attributes (temp, exp, 0); set_mem_addr_space (temp, as); align = get_object_or_type_alignment (exp); - if (mode != BLKmode + if (modifier != EXPAND_WRITE + && mode != BLKmode && align < GET_MODE_ALIGNMENT (mode) /* If the target does not have special handling for unaligned loads of mode then it can use regular moves for them. */ @@ -9390,7 +9338,8 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode, set_mem_addr_space (temp, as); if (TREE_THIS_VOLATILE (exp)) MEM_VOLATILE_P (temp) = 1; - if (mode != BLKmode + if (modifier != EXPAND_WRITE + && mode != BLKmode && align < GET_MODE_ALIGNMENT (mode) /* If the target does not have special handling for unaligned loads of mode then it can use regular moves for them. */ |