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(untyped_call, blockage): New patterns, basically copied from m68k.md.

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From-SVN: r4617
This commit is contained in:
Richard Stallman 1993-06-01 03:52:42 +00:00
parent 9cd1e1aab4
commit d0d0237754
1 changed files with 37 additions and 0 deletions
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37
gcc/config/vax/vax.md
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@ -1854,6 +1854,43 @@
return \"calls %2,%1\";
")
;; Call subroutine returning any type.
(define_expand "untyped_call"
[(parallel [(call (match_operand 0 "" "")
(const_int 0))
(match_operand 1 "" "")
(match_operand 2 "" "")])]
""
"
{
int i;
emit_call_insn (gen_call_pop (operands[0], const0_rtx, NULL, const0_rtx));
for (i = 0; i < XVECLEN (operands[2], 0); i++)
{
rtx set = XVECEXP (operands[2], 0, i);
emit_move_insn (SET_DEST (set), SET_SRC (set));
}
/* The optimizer does not know that the call sets the function value
registers we stored in the result block. We avoid problems by
claiming that all hard registers are used and clobbered at this
point. */
emit_insn (gen_blockage ());
DONE;
}")
;; UNSPEC_VOLATILE is considered to use and clobber all hard registers and
;; all of memory. This blocks insns from being moved across this point.
(define_insn "blockage"
[(unspec_volatile [(const_int 0)] 0)]
""
"")
(define_insn "return"
[(return)]
""