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From: rth@gcc.gnu.org To: gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, jodaman@cegt201.bradley.edu, nobody@gcc.gnu.org Subject: Re: c/4134: inline assembly - gcc fails to work around register pressure Date: Tue, 23 Apr 2002 01:18:00 -0000 [thread overview] Message-ID: <20020423081812.15852.qmail@sources.redhat.com> (raw) Synopsis: inline assembly - gcc fails to work around register pressure State-Changed-From-To: open->closed State-Changed-By: rth State-Changed-When: Tue Apr 23 01:18:11 2002 State-Changed-Why: Not a bug. You really have run out of registers. Your ifdef BUG example requires 7 registers: 3 for each of the "r" inputs, 1 for the address of the input memory parameter, and 3 are clobbered and thus cannot be used. The i386 has 8 registers one is reserved for the stack pointer, and one is reserved for the frame pointer (at least without -fomit-frame-pointer), leaving only 6, one short of the required 7. As a guess, egcs failed to properly not use one of the registers marked clobbered. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4134
next reply other threads:[~2002-04-23 8:18 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-04-23 1:18 rth [this message] -- strict thread matches above, loose matches on Subject: below -- 2002-04-25 6:56 J.D. 2001-08-27 2:16 jodaman
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