State-Changed-From-To: open->analyzed
State-Changed-Why: Confirmed, also on linux x86. Reduced testcase is
    -------------------------
    void foo(char *dst, char xchg, char cmp)
    {
      __asm__("lock" "\tcmpxchgb %1, (%2)\t\n"
              :"=al"(cmp)
              :"dl"(xchg), "r"(dst), "al"(cmp));
    }
    --------------------------
    Messages are
    tmp/g> /home/bangerth/bin/gcc-3.3y-pre/bin/g++ -c y.cc
    y.cc: In function `void foo(char*, char, char)':
    y.cc:8: internal compiler error: in instantiate_virtual_regs_1, at function.c:
       3936
    Please submit a full bug report,
    with preprocessed source if appropriate.
    See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
    
    
    This happens with both 3.2.1 as well as 3.3, but not with
    2.95, so is a regression.

From: Janis Johnson <janis187@us.ibm.com>
To: gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org,
   nobody@gcc.gnu.org, hope2see@chol.com, jh@suse.cz
Cc:  
Subject: Re: c++/7916: [3.2/3.3 regression] ICE in instantiate_virtual_register_1
Date: Fri, 20 Dec 2002 14:43:46 -0800

 The regression reported in PR c++/7916 showed up starting
 with this patch:
 
 Wed Mar 14 22:26:10 CET 2001  Jan Hubicka  <jh@suse.cz>
 
         * i386.c (ix86_cmodel_string, ix86_cmodel): Define.
         (override_options): Parse cmodel string.
         (x86_64_sign_extended_value, x86_64_zero_extended_value): New.
         * i386.h (TARGET_OPTIONS): Add "cmodel".
         (EXTRA_CONSTRAINT): Recognize 'e' and 'Z'.
         (enum cmodel): New.
         (ix86_cmodel_string, ix86_cmodel): Declare.
 
         Spot by Matt Kraai:
         * i386.h (GENERAL_REG_P): Add missing REG_P.
 
 Here's a small test case that causes the compiler to ICE
 when compiled on i686-linux.  The PR is against C++, but my
 testing used cc1 rather than cc1plus.
 
 -------------------
 void foo(char *dst, char xchg, char cmp)
 {
   __asm__("lock" "\tcmpxchgb %1, (%2)\t\n"
           :"=al"(cmp)
           :"dl"(xchg), "r"(dst), "al"(cmp));
 }
 -------------------
 
 Output from the mainline compiler:
 
 7916.c: In function `foo':
 7916.c:6: internal compiler error: in instantiate_virtual_regs_1,
           at function.c:3898
 Please submit a full bug report,
 with preprocessed source if appropriate.
 See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7916
 
 
 

From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
To: gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: c++/7916
Date: Fri, 20 Dec 2002 20:43:24 -0600 (CST)

 ---------- Forwarded message ----------
 Date: Sat, 21 Dec 2002 01:19:12 +0100
 From: Jan Hubicka <jh@suse.cz>
 To: Janis Johnson <janis187@us.ibm.com>
 Cc: gcc@gcc.gnu.org, jh@suse.cz, bangerth@ticam.utexas.edu
 Subject: Re: patch that caused regression PR c++/7916
 
 > The regression reported in PR c++/7916 showed up starting with this
 > patch:
 > 
 > Wed Mar 14 22:26:10 CET 2001  Jan Hubicka  <jh@suse.cz>
 > 
 > 	* i386.c (ix86_cmodel_string, ix86_cmodel): Define.
 > 	(override_options): Parse cmodel string.
 > 	(x86_64_sign_extended_value, x86_64_zero_extended_value): New.
 > 	* i386.h (TARGET_OPTIONS): Add "cmodel".
 > 	(EXTRA_CONSTRAINT): Recognize 'e' and 'Z'.
 > 	(enum cmodel): New.
 > 	(ix86_cmodel_string, ix86_cmodel): Declare.
 > 
 > 	Spot by Matt Kraai:
 > 	* i386.h (GENERAL_REG_P): Add missing REG_P.
 > 
 > Here's a small test case that causes the compiler to ICE when compiled
 > on i686-linux.  The PR is against C++, but my testing used cc1 rather
 > than cc1plus.
 > 
 > -------------------
 > void foo(char *dst, char xchg, char cmp)
 > {
 >   __asm__("lock" "\tcmpxchgb %1, (%2)\t\n"
 >           :"=al"(cmp)
 >           :"dl"(xchg), "r"(dst), "al"(cmp));
 > }
 > -------------------
 > 
 > Output from the mainline compiler:
 > 
 > 7916.c: In function `foo':
 > 7916.c:6: internal compiler error: in instantiate_virtual_regs_1,
 >           at function.c:3898
 > Please submit a full bug report,
 > with preprocessed source if appropriate.
 > See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
 > 
 > I've added this information to the PR.
 > 
 > Jan, if the testcase itself isn't valid then please add that
 > information to the PR.
 The testcase is nonsenical ("=al" was probably meant to be "=a")
 but I will try to track down the reason for dying in
 instantiate_virtual_regs_1.  Thanks!
 
 Honza
 > 
 > Janis
 

From: Steven Bosscher <s.bosscher@student.tudelft.nl>
To: gcc-gnats@gcc.gnu.org, hope2see@chol.com, gcc-bugs@gcc.gnu.org,
	nobody@gcc.gnu.org, gcc-prs@gcc.gnu.org, jh@suse.cz
Cc:  
Subject: Re: inline-asm/7916: [3.2/3.3/3.4 regression] ICE in instantiate_virtual_register_1
Date: Mon, 24 Mar 2003 12:24:58 +0100

 The GCC 3.3 ChangeLog suggest that this PR is fixed:
 
 Fri Mar 21 23:14:11 CET 2003  Jan Hubicka  <jh@suse.cz>
 
         PR inline-asm/7916
 
         * function.c (instantiate_virtual_regs_lossage): New function.
         (instantiate_virtual_regs_1): Use it.
         (instantiate_virtual_regs): Do not continue in substition when 
 insn has
         been deleted.
 
 Honza, if the PR is fixed, can you close the PR?
 
 Greetz
 Steven
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7916
 

State-Changed-From-To: analyzed->closed
State-Changed-Why: Fixed on 3.3/mainline

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