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function.h (struct function): Add arg_pointer_save_area_init.

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* function.h (struct function): Add arg_pointer_save_area_init.
        * function.c (expand_function_end): Init arg_pointer_save_area.
        (get_arg_pointer_save_area): Do not init arg_pointer_save_area
        when called from a nested function.

From-SVN: r45362
This commit is contained in:
Richard Henderson 2001-09-03 13:50:33 -07:00 committed by Richard Henderson
parent 72ea47b164
commit 964be02f44
3 changed files with 24 additions and 11 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2001-09-03 Richard Henderson <rth@redhat.com>
* function.h (struct function): Add arg_pointer_save_area_init.
* function.c (expand_function_end): Init arg_pointer_save_area.
(get_arg_pointer_save_area): Do not init arg_pointer_save_area
when called from a nested function.
2001-09-02 Angela Marie Thomas <angela@cygnus.com>
* fixinc/Makefile.in: Regenerate fixincl.x only if maintainer-mode

25
gcc/function.c
View File

@ -6681,6 +6681,11 @@ expand_function_end (filename, line, end_bindings)
finish_expr_for_function ();
/* If arg_pointer_save_area was referenced only from a nested
function, we will not have initialized it yet. Do that now. */
if (arg_pointer_save_area && ! cfun->arg_pointer_save_area_init)
get_arg_pointer_save_area (cfun);
#ifdef NON_SAVING_SETJMP
/* Don't put any variables in registers if we call setjmp
on a machine that fails to restore the registers. */
@ -6998,27 +7003,25 @@ get_arg_pointer_save_area (f)
if (! ret)
{
rtx seq;
ret = assign_stack_local_1 (Pmode, GET_MODE_SIZE (Pmode), 0, f);
f->x_arg_pointer_save_area = ret;
}
if (f == cfun && ! f->arg_pointer_save_area_init)
{
rtx seq;
/* Save the arg pointer at the beginning of the function. The
generated stack slot may not be a valid memory address, so w
generated stack slot may not be a valid memory address, so we
have to check it and fix it if necessary. */
start_sequence ();
emit_move_insn (validize_mem (ret), virtual_incoming_args_rtx);
seq = gen_sequence ();
end_sequence ();
if (f == cfun)
{
push_topmost_sequence ();
emit_insn_after (seq, get_insns ());
pop_topmost_sequence ();
}
else
emit_insn_before (seq, f->x_tail_recursion_reentry);
push_topmost_sequence ();
emit_insn_after (seq, get_insns ());
pop_topmost_sequence ();
}
return ret;

3
gcc/function.h
View File

@ -477,6 +477,9 @@ struct function
/* Nonzero if the current function needs an lsda for exception handling. */
unsigned int uses_eh_lsda : 1;
/* Nonzero if code to initialize arg_pointer_save_area has been emited. */
unsigned int arg_pointer_save_area_init : 1;
};
/* The function currently being compiled. */