diff options
| author | Jim Wilson <wilson@gcc.gnu.org> | 1995-04-25 16:36:38 -0700 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1995-04-25 16:36:38 -0700 |
| commit | e9cf6a9776f6749d6a971034e5ec16cc63391a3f (patch) | |
| tree | 3ffb50c348ff42f4ed022071a225e0257399faa5 | |
| parent | 8521c499ab131282d6c4c2943cce525573d8cee3 (diff) | |
| download | gcc-e9cf6a9776f6749d6a971034e5ec16cc63391a3f.zip gcc-e9cf6a9776f6749d6a971034e5ec16cc63391a3f.tar.gz gcc-e9cf6a9776f6749d6a971034e5ec16cc63391a3f.tar.bz2 | |
(struct move_by_pieces): Add to_struct and from_struct fields.
(move_by_pieces): Set to_struct and from_struct fields.
(move_by_pieces_1): Set MEM_IN_STRUCT_P of to1 and from1.
(expand_builtin, case BUILT_IN_MEMCPY): New variable type.
Set MEM_IN_STRUCT_P of src_mem and dest_mem.
From-SVN: r9468
| -rw-r--r-- | gcc/expr.c | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -118,10 +118,12 @@ struct move_by_pieces rtx to_addr; int autinc_to; int explicit_inc_to; + int to_struct; rtx from; rtx from_addr; int autinc_from; int explicit_inc_from; + int from_struct; int len; int offset; int reverse; @@ -1412,6 +1414,9 @@ move_by_pieces (to, from, len, align) if (data.reverse) data.offset = len; data.len = len; + data.to_struct = MEM_IN_STRUCT_P (to); + data.from_struct = MEM_IN_STRUCT_P (from); + /* If copying requires more than two move insns, copy addresses to registers (to make displacements shorter) and use post-increment if available. */ @@ -1551,11 +1556,13 @@ move_by_pieces_1 (genfun, mode, data) ? gen_rtx (MEM, mode, data->to_addr) : change_address (data->to, mode, plus_constant (data->to_addr, data->offset))); + MEM_IN_STRUCT_P (to1) = data->to_struct; from1 = (data->autinc_from ? gen_rtx (MEM, mode, data->from_addr) : change_address (data->from, mode, plus_constant (data->from_addr, data->offset))); + MEM_IN_STRUCT_P (from1) = data->from_struct; #ifdef HAVE_PRE_DECREMENT if (data->explicit_inc_to < 0) @@ -7728,6 +7735,7 @@ expand_builtin (exp, target, subtarget, mode, ignore) tree dest = TREE_VALUE (arglist); tree src = TREE_VALUE (TREE_CHAIN (arglist)); tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))); + tree type; int src_align = get_pointer_alignment (src, BIGGEST_ALIGNMENT) / BITS_PER_UNIT; @@ -7747,11 +7755,23 @@ expand_builtin (exp, target, subtarget, mode, ignore) dest_rtx = expand_expr (dest, NULL_RTX, ptr_mode, EXPAND_SUM); dest_mem = gen_rtx (MEM, BLKmode, memory_address (BLKmode, dest_rtx)); + /* There could be a void* cast on top of the object. */ + if (TREE_CODE (dest) == NOP_EXPR) + type = TREE_TYPE (TREE_TYPE (TREE_OPERAND (dest, 0))); + else + type = TREE_TYPE (TREE_TYPE (dest)); + MEM_IN_STRUCT_P (dest_mem) = AGGREGATE_TYPE_P (type); src_mem = gen_rtx (MEM, BLKmode, memory_address (BLKmode, expand_expr (src, NULL_RTX, ptr_mode, EXPAND_SUM))); + /* There could be a void* cast on top of the object. */ + if (TREE_CODE (src) == NOP_EXPR) + type = TREE_TYPE (TREE_TYPE (TREE_OPERAND (src, 0))); + else + type = TREE_TYPE (TREE_TYPE (src)); + MEM_IN_STRUCT_P (src_mem) = AGGREGATE_TYPE_P (type); /* Copy word part most expediently. */ emit_block_move (dest_mem, src_mem, |