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builtins.c (expand_builtin_setjmp): Set current_function_calls_setjmp. 

* builtins.c (expand_builtin_setjmp): Set
	current_function_calls_setjmp.
	(expand_builtin_longjmp): Set current_function_calls_longjmp.

	* config/sparc/sparc.md (builtin_setjmp_setup): New expand.
	(do_builtin_setjmp_setup): New insn.

From-SVN: r37461
This commit is contained in:
Jakub Jelinek 2000-11-14 19:05:45 +01:00 committed by Jakub Jelinek
parent 3401c26b5c
commit f36d6244de
3 changed files with 39 additions and 0 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2000-11-14 Jakub Jelinek <jakub@redhat.com>
* builtins.c (expand_builtin_setjmp): Set
current_function_calls_setjmp.
(expand_builtin_longjmp): Set current_function_calls_longjmp.
* config/sparc/sparc.md (builtin_setjmp_setup): New expand.
(do_builtin_setjmp_setup): New insn.
Tue Nov 14 12:34:56 2000 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* tree.c (get_unwidened): Use host_integerp and tree_low_cst.

3
gcc/builtins.c
View File

@ -446,6 +446,7 @@ expand_builtin_setjmp (buf_addr, target, first_label, next_label)
calls may traverse the arc back to this label. */
current_function_has_nonlocal_label = 1;
current_function_calls_setjmp = 1;
nonlocal_goto_handler_labels
= gen_rtx_EXPR_LIST (VOIDmode, lab1, nonlocal_goto_handler_labels);
@ -547,6 +548,8 @@ expand_builtin_longjmp (buf_addr, value)
if (value != const1_rtx)
abort ();
current_function_calls_longjmp = 1;
#ifdef HAVE_builtin_longjmp
if (HAVE_builtin_longjmp)
emit_insn (gen_builtin_longjmp (buf_addr));

27
gcc/config/sparc/sparc.md
View File

@ -50,6 +50,7 @@
;; 2 goto_handler_and_restore
;; 3 goto_handler_and_restore_v9*
;; 4 flush
;; 5 do_builtin_setjmp_setup
;;
;; The upper 32 fp regs on the v9 can't hold SFmode values. To deal with this
@ -9014,6 +9015,32 @@
;; [(set_attr "type" "misc")
;; (set_attr "length" "2,3")])
;; For __builtin_setjmp we need to flush register windows iff the function
;; calls alloca as well, because otherwise the register window might be
;; saved after %sp adjustement and thus setjmp would crash
(define_expand "builtin_setjmp_setup"
[(match_operand 0 "register_operand" "r")]
""
"
{
emit_insn (gen_do_builtin_setjmp_setup ());
DONE;
}")
(define_insn "do_builtin_setjmp_setup"
[(unspec_volatile [(const_int 0)] 5)]
""
"*
{
if (!current_function_calls_alloca)
return \"\";
if (TARGET_V9)
return \"flushw\";
return \"ta\\t3\";
}"
[(set_attr "type" "misc")
(set_attr "length" "1")])
;; Pattern for use after a setjmp to store FP and the return register
;; into the stack area.