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alpha.md (builtin_longjmp_internal): New.

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* config/alpha/alpha.md (builtin_longjmp_internal): New.
        (builtin_longjmp): Use it instead of emit_indirect_jump.

From-SVN: r39232
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Richard Henderson 2001-01-24 01:00:02 -08:00 committed by Richard Henderson
parent 28d0a4d8f7
commit 64b4ab5a18
2 changed files with 17 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-01-24 Richard Henderson <rth@redhat.com>
* config/alpha/alpha.md (builtin_longjmp_internal): New.
(builtin_longjmp): Use it instead of emit_indirect_jump.
2001-01-23 John David Anglin <dave@hiauly1.hia.nrc.ca>
* bb-reorder.c (make_reorder_chain_1): Handle case where

14
gcc/config/alpha/alpha.md
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@ -5913,7 +5913,7 @@
"lda %0,%1(%0)")
(define_expand "builtin_longjmp"
[(unspec_volatile [(match_operand:DI 0 "register_operand" "r")] 3)]
[(use (match_operand:DI 0 "register_operand" "r"))]
"! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT"
"
{
@ -5933,10 +5933,20 @@
/* Load the label we are jumping through into $27 so that we know
where to look for it when we get back to setjmp's function for
restoring the gp. */
emit_indirect_jump (pv);
emit_jump_insn (gen_builtin_longjmp_internal (pv));
emit_barrier ();
DONE;
}")
;; This is effectively a copy of indirect_jump, but constrained such
;; that register renaming cannot foil our cunning plan with $27.
(define_insn "builtin_longjmp_internal"
[(set (pc)
(unspec_volatile [(match_operand:DI 0 "register_operand" "c")] 3))]
""
"jmp $31,(%0),0"
[(set_attr "type" "ibr")])
(define_insn "*builtin_setjmp_receiver_sub_label"
[(unspec_volatile [(label_ref (match_operand 0 "" ""))] 2)]
"! TARGET_OPEN_VMS && ! TARGET_WINDOWS_NT && TARGET_AS_CAN_SUBTRACT_LABELS"