diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-06-26 05:27:14 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-06-26 05:27:14 +0000 |
| commit | a331ea1be592e3f0aaa83ec98705380680183f3f (patch) | |
| tree | 8c9bcda4847f4df544cda5ec12d8094d3a8ec3f4 /gcc/calls.c | |
| parent | 7008e67aa57e10dccfcae00dc5f05c3b53466e8c (diff) | |
| download | gcc-a331ea1be592e3f0aaa83ec98705380680183f3f.tar.gz | |
PR middle-end/17965
* calls.c (expand_call, emit_library_call_value_1): Use xmalloc/free
instead of alloca for really big argument sizes.
* gcc.c-torture/compile/20050622-1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@101333 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/calls.c')
| -rw-r--r-- | gcc/calls.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index b06830dcf82..1613e883746 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -1864,6 +1864,7 @@ expand_call (tree exp, rtx target, int ignore) int initial_highest_arg_in_use = highest_outgoing_arg_in_use; char *initial_stack_usage_map = stack_usage_map; + char *stack_usage_map_buf = NULL; int old_stack_allocated; @@ -2350,7 +2351,10 @@ expand_call (tree exp, rtx target, int ignore) highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use, needed); #endif - stack_usage_map = alloca (highest_outgoing_arg_in_use); + if (stack_usage_map_buf) + free (stack_usage_map_buf); + stack_usage_map_buf = xmalloc (highest_outgoing_arg_in_use); + stack_usage_map = stack_usage_map_buf; if (initial_highest_arg_in_use) memcpy (stack_usage_map, initial_stack_usage_map, @@ -2455,7 +2459,10 @@ expand_call (tree exp, rtx target, int ignore) = stack_arg_under_construction; stack_arg_under_construction = 0; /* Make a new map for the new argument list. */ - stack_usage_map = alloca (highest_outgoing_arg_in_use); + if (stack_usage_map_buf) + free (stack_usage_map_buf); + stack_usage_map_buf = xmalloc (highest_outgoing_arg_in_use); + stack_usage_map = stack_usage_map_buf; memset (stack_usage_map, 0, highest_outgoing_arg_in_use); highest_outgoing_arg_in_use = 0; } @@ -3009,6 +3016,9 @@ expand_call (tree exp, rtx target, int ignore) emit_move_insn (virtual_stack_dynamic_rtx, stack_pointer_rtx); } + if (stack_usage_map_buf) + free (stack_usage_map_buf); + return target; } @@ -3203,6 +3213,7 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value, /* Size of the stack reserved for parameter registers. */ int initial_highest_arg_in_use = highest_outgoing_arg_in_use; char *initial_stack_usage_map = stack_usage_map; + char *stack_usage_map_buf = NULL; rtx struct_value = targetm.calls.struct_value_rtx (0, 0); @@ -3481,7 +3492,8 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value, highest_outgoing_arg_in_use = MAX (initial_highest_arg_in_use, needed); #endif - stack_usage_map = alloca (highest_outgoing_arg_in_use); + stack_usage_map_buf = xmalloc (highest_outgoing_arg_in_use); + stack_usage_map = stack_usage_map_buf; if (initial_highest_arg_in_use) memcpy (stack_usage_map, initial_stack_usage_map, @@ -3835,6 +3847,9 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value, stack_usage_map = initial_stack_usage_map; } + if (stack_usage_map_buf) + free (stack_usage_map_buf); + return value; } |