Re: inline-asm/4823: [3.2/3.3/3.4 regression] gcc reports internal compiler error on legal code

[Steven Bosscher <s.bosscher@student.tudelft.nl>]

The following reply was made to PR inline-asm/4823; it has been noted by GNATS.

From: Steven Bosscher <s.bosscher@student.tudelft.nl>
To: gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org,
	rudd@cyberoptics.com, gcc-prs@gcc.gnu.org, rodrigc@gcc.gnu.org,
	jh@suse.cz
Cc:  
Subject: Re: inline-asm/4823: [3.2/3.3/3.4 regression] gcc reports internal
 compiler error on legal code
Date: Mon, 24 Mar 2003 20:41:28 +0100

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4823
 
 For Wolfgang's smaller testcase:
 
 ---------------------------------
 void
 f (void)
 {
   double result;
   asm volatile (
   " faddp %0, %1 \n\t"
   : "=&t" (result)
   : "u" (result),
     "0" (result)
   : "%st", "%st(1)", "%st(2)", "%st(3)",
     "%st(4)", "%st(5)", "%st(6)", "%st(7)"
   );
 }
 ------------------------
 
 we now don't crash.  Instead we bail out with an error.
 
 # gcc-3.3 -c 4823.c
 4823.c: In function `f':
 4823.c:5: error: output constraint 0 cannot be specified together with 
 "st" clobber
 4823.c:8: confused by earlier errors, bailing out
 # gcc-3.3 -c 4823.c -O
 4823.c: In function `f':
 4823.c:5: error: output constraint 0 cannot be specified together with 
 "st" clobber
 4823.c:8: confused by earlier errors, bailing out
 # gcc-3.3 -c 4823.c -O2
 4823.c: In function `f':
 4823.c:5: error: output constraint 0 cannot be specified together with 
 "st" clobber
 4823.c:8: confused by earlier errors, bailing out
 
 Honza, is this the correct behavior?
 
 Greetz
 Steven