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From: Dmitry <diwil@eis.ru>
To: gcc@gcc.gnu.org
Subject: how to force reloader(?) to respect clobber directive?
Date: Tue, 26 Feb 2002 01:20:00 -0000	[thread overview]
Message-ID: <20020226121343.27800870.diwil@eis.ru> (raw)

Fellows,

I define:


(define_insn "tstsi"
  [(set (cc0) (match_operand:SI 0 "register_operand" "r"))
        (clobber (match_dup 0))]
  ""
  "* return msp430_emit_tstsi(insn, operands, NULL);"
[(set_attr "length" "2")
 (set_attr "cc" "compare")])

Compiler produces a code in which 0 operand clobbered and used after this insn as being saved.

Should I define something extra to say to gcc to threat 0 operand as clobbered after insn?

Thanks,
~d


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             reply	other threads:[~2002-02-26  9:18 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-02-26  1:20 Dmitry [this message]
2002-02-26  9:51 ` Richard Henderson
2002-02-26 11:41   ` Dimmy
2002-02-26 11:47     ` Jan Hubicka
2002-02-26 12:49       ` Dimmy

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