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From: David Edelsohn <dje@watson.ibm.com>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
Subject: Re: target/7282: powerpc64 SImode in FPR
Date: Sat, 13 Jul 2002 07:26:00 -0000	[thread overview]
Message-ID: <20020713142601.22488.qmail@sources.redhat.com> (raw)

The following reply was made to PR target/7282; it has been noted by GNATS.

From: David Edelsohn <dje@watson.ibm.com>
To: gcc-gnats@gcc.gnu.org, gcc-patches@gcc.gnu.org
Cc:  
Subject: Re: target/7282: powerpc64 SImode in FPR 
Date: Sat, 13 Jul 2002 10:18:54 -0400

 	This looks okay except for
 
 +  [(set (match_operand:DF 0 "gpc_reg_operand" "=f")
 +	(float:DF (match_operand:SI 1 "gpc_reg_operand" "*f")))
 +   (clobber (match_operand:DI 2 "memory_operand" "=o"))
 +   (clobber (match_operand:DI 3 "gpc_reg_operand" "=r"))
 +   (clobber (match_operand:DI 4 "gpc_reg_operand" "=f"))]
 
 The input SImode operand should have constraint "r", not "*f".  The whole
 point of this pattern is to move the SImode operand from the GPR to the
 FPR because GCC sometimes gets confused when asked to do this itself.
 SImode is not allowed in FPRs, so the "*f" constraint is contradictory.
 
 David


             reply	other threads:[~2002-07-13 14:26 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-13  7:26 David Edelsohn [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-07-13 22:46 Alan Modra
2002-07-13  4:36 Alan Modra
2002-07-12  0:16 Alan Modra

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