diff options
| author | jconner <jconner@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-01-04 01:37:15 +0000 |
|---|---|---|
| committer | jconner <jconner@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-01-04 01:37:15 +0000 |
| commit | c2ca1bab99ec01987215befac214280efd8ff709 (patch) | |
| tree | 186a95381a2932a55c3a3134f0868b1aef0b3390 /gcc/calls.c | |
| parent | 920c13732dcdfcf940ae29a9ecf916dfd6f32c28 (diff) | |
| download | gcc-c2ca1bab99ec01987215befac214280efd8ff709.tar.gz | |
2007-03-01 Josh Conner <jconner@apple.com>
PR middle-end/29683
* calls.c (compute_argument_addresses): Set stack and stack_slot
for partial args, too.
(store_one_arg): Use locate.size.constant for the size when
generating a save_area.
2007-03-01 Josh Conner <jconner@apple.com>
PR middle-end/29683
* gcc.dg/pr29683.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120425 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/calls.c')
| -rw-r--r-- | gcc/calls.c | 46 |
1 files changed, 38 insertions, 8 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index bdb8167adef..c0d1f8ca754 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -1355,9 +1355,13 @@ compute_argument_addresses (struct arg_data *args, rtx argblock, int num_actuals rtx slot_offset = ARGS_SIZE_RTX (args[i].locate.slot_offset); rtx addr; unsigned int align, boundary; + unsigned int units_on_stack = 0; + enum machine_mode partial_mode = VOIDmode; /* Skip this parm if it will not be passed on the stack. */ - if (! args[i].pass_on_stack && args[i].reg != 0) + if (! args[i].pass_on_stack + && args[i].reg != 0 + && args[i].partial == 0) continue; if (GET_CODE (offset) == CONST_INT) @@ -1366,9 +1370,23 @@ compute_argument_addresses (struct arg_data *args, rtx argblock, int num_actuals addr = gen_rtx_PLUS (Pmode, arg_reg, offset); addr = plus_constant (addr, arg_offset); - args[i].stack = gen_rtx_MEM (args[i].mode, addr); - set_mem_attributes (args[i].stack, - TREE_TYPE (args[i].tree_value), 1); + + if (args[i].partial != 0) + { + /* Only part of the parameter is being passed on the stack. + Generate a simple memory reference of the correct size. */ + units_on_stack = args[i].locate.size.constant; + partial_mode = mode_for_size (units_on_stack * BITS_PER_UNIT, + MODE_INT, 1); + args[i].stack = gen_rtx_MEM (partial_mode, addr); + set_mem_size (args[i].stack, GEN_INT (units_on_stack)); + } + else + { + args[i].stack = gen_rtx_MEM (args[i].mode, addr); + set_mem_attributes (args[i].stack, + TREE_TYPE (args[i].tree_value), 1); + } align = BITS_PER_UNIT; boundary = args[i].locate.boundary; if (args[i].locate.where_pad != downward) @@ -1386,9 +1404,21 @@ compute_argument_addresses (struct arg_data *args, rtx argblock, int num_actuals addr = gen_rtx_PLUS (Pmode, arg_reg, slot_offset); addr = plus_constant (addr, arg_offset); - args[i].stack_slot = gen_rtx_MEM (args[i].mode, addr); - set_mem_attributes (args[i].stack_slot, - TREE_TYPE (args[i].tree_value), 1); + + if (args[i].partial != 0) + { + /* Only part of the parameter is being passed on the stack. + Generate a simple memory reference of the correct size. + */ + args[i].stack_slot = gen_rtx_MEM (partial_mode, addr); + set_mem_size (args[i].stack_slot, GEN_INT (units_on_stack)); + } + else + { + args[i].stack_slot = gen_rtx_MEM (args[i].mode, addr); + set_mem_attributes (args[i].stack_slot, + TREE_TYPE (args[i].tree_value), 1); + } set_mem_align (args[i].stack_slot, args[i].locate.boundary); /* Function incoming arguments may overlap with sibling call @@ -4056,7 +4086,7 @@ store_one_arg (struct arg_data *arg, rtx argblock, int flags, arg->save_area = assign_temp (nt, 0, 1, 1); preserve_temp_slots (arg->save_area); emit_block_move (validize_mem (arg->save_area), stack_area, - expr_size (arg->tree_value), + GEN_INT (arg->locate.size.constant), BLOCK_OP_CALL_PARM); } else |