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From: ehrhardt@mathematik.uni-ulm.de
To: berndtrog@yahoo.com, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
	nobody@gcc.gnu.org
Subject: Re: inline-asm/10857: Inlining a function with inline-asm: "error: impossible constraint in `asm'"
Date: Mon, 19 May 2003 12:23:00 -0000	[thread overview]
Message-ID: <20030519122316.20734.qmail@sources.redhat.com> (raw)

Synopsis: Inlining a function with inline-asm: "error: impossible constraint in `asm'"

State-Changed-From-To: open->closed
State-Changed-By: cae
State-Changed-When: Mon May 19 12:23:16 2003
State-Changed-Why:
    Not a bug. An immediate value must be a compile time constant. A
    procedure parameter is definitly NOT a compile time constant. gcc
    can deduce its value for an inline function if certain optimizations
    are done. You can request these optimizations with the various -O
    flags and in this case the code compiles. Note that there is no
    guarantee that this will remain true in the future.
    
    Also note that the `I' constraint has this description on the avr
    architecture:
    
    |    `I'
    |          Constant greater than -1, less than 64
    
         regards  Christian

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10857


             reply	other threads:[~2003-05-19 12:23 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-19 12:23 ehrhardt [this message]
  -- strict thread matches above, loose matches on Subject: below --
2003-05-21  9:46 Bernd Trog
2003-05-19 17:53 ehrhardt
2003-05-19 16:06 Bernd Trog
2003-05-19 11:16 berndtrog

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