[Bug target/15569] New: [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[Bug target/15569] New: [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[hjl at lucon dot org]

Building 2.6.6 ia64 Linux kernel caused ICE.

-- 
           Summary: [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6
                    kernel
           Product: gcc
           Version: 3.4.1
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl at lucon dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: ia64-unknown-linux-gnu
  GCC host triplet: ia64-unknown-linux-gnu
GCC target triplet: ia64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[hjl at lucon dot org]

------- Additional Comments From hjl at lucon dot org  2004-05-21 18:14 -------
Created an attachment (id=6357)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6357&action=view)
A testcase

[hjl@gnu-4 linux-2.6.6]$ /usr/gcc-3.4/bin/gcc	 -frename-registers -O2  
-mconstant-gp -c foo.c
foo.c: In function `ext2_lookup':
foo.c:66: internal compiler error: in verify_local_live_at_start, at flow.c:546

Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-21 18:56 -------
Does removing -frename-registers fix the bug?

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[hjl at lucon dot org]

------- Additional Comments From hjl at lucon dot org  2004-05-21 19:17 -------
Removing frename-registers will make gcc to finish. But I won't
call it fix. Gcc 3.2 has no problem. I was told

gcc version 3.4 20031201 (experimental)

was OK.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[hjl at lucon dot org]

------- Additional Comments From hjl at lucon dot org  2004-05-21 21:57 -------
I verified that this patch

http://gcc.gnu.org/ml/gcc-patches/2003-12/msg02263.html

caused the regression.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jh at suse dot cz
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-21 23:17 -------
But that patch should not cause any problem if there is problem in is caused by one of the two passes 
which were interchanged.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[hjl at lucon dot org]

------- Additional Comments From hjl at lucon dot org  2004-05-22 22:52 -------
This thread

http://gcc.gnu.org/ml/gcc-patches/2004-04/msg00961.html

leads changes which fix the problem on the mainline. I think we should either
backport those changes to 3.4 or revert the patch which triggered the
regression.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-22 22:57 -------
You mean -fweb fixes it?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.4.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[hjl at lucon dot org]

------- Additional Comments From hjl at lucon dot org  2004-05-22 23:08 -------
After this checkin

http://gcc.gnu.org/ml/gcc-cvs/2004-04/msg00552.html

mainline is OK. But I am sure if that patch requires other additonal
patches.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4.1                       |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-22 23:18 -------
Yes that one required more patches, but what you are saying that -fweb fixes the problem as that is 
what the patch does?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.4.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[hjl at lucon dot org]

------- Additional Comments From hjl at lucon dot org  2004-05-22 23:41 -------
What I was saying was before

http://gcc.gnu.org/ml/gcc-cvs/2004-04/msg00552.html

gcc failed the testcase. After

http://gcc.gnu.org/ml/gcc-cvs/2004-04/msg00552.html

gcc passed the testcase. Nothing more.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-22 23:53 -------
But that means that -fweb fixes the problem as that is what the patch does, if it does then there is still 
a bug somewhere else.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[hjl at lucon dot org]

------- Additional Comments From hjl at lucon dot org  2004-05-22 23:55 -------
The thread

http://gcc.gnu.org/ml/gcc-patches/2004-04/msg00961.html

mentions -frename-registers, which triggers the gcc bug when
compiling my testcase.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[bonzini at gnu dot org]

------- Additional Comments From bonzini at gnu dot org  2004-05-27 15:59 -------
I think that -frename-registers should be disabled at -O3 for 3.4 branch as
well. Ideally, the compiler should bootstrap at -O3 on all platforms.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[wilson at specifixinc dot com]

------- Additional Comments From wilson at specifixinc dot com  2004-06-01 04:20 -------
Subject: Re:  [3.4 regression] Gcc 3.4.1 failed to build
 ia64 2.6.6 kernel

hjl at lucon dot org wrote:
> [hjl@gnu-4 linux-2.6.6]$ /usr/gcc-3.4/bin/gcc	 -frename-registers -O2  
> -mconstant-gp -c foo.c
> foo.c: In function `ext2_lookup':
> foo.c:66: internal compiler error: in verify_local_live_at_start, at flow.c:546

When -frename-registers got added to -O2 on mainline, there were IA-64 
bootstrap failures.  I had to write a patch for that.  The patch can be 
found here:
     http://gcc.gnu.org/ml/gcc-patches/2004-04/msg01328.html

With this patch applied, the testcase compiles OK.

So it looks like we need to backport this patch onto the gcc-3.4 branch. 
  I am leaving for the GCC Summit tomorrow, so I won't be able to test 
this until next week.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[wilson at gcc dot gnu dot org]

------- Additional Comments From wilson at gcc dot gnu dot org  2004-06-01 04:24 -------
*** Bug 15681 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-06-08 06:57 -------
Subject: Bug 15569

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	wilson@gcc.gnu.org	2004-06-08 06:56:45

Modified files:
	gcc            : ChangeLog 
	gcc/config/ia64: ia64.md 

Log message:
	PR target/15569
	* config/ia64/ia64.md (call_value_nogp): Add constraints for op0.
	(vall_value_gp): Likewise.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.478&r2=2.2326.2.479
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/ia64/ia64.md.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.119.2.3&r2=1.119.2.4



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[wilson at gcc dot gnu dot org]

------- Additional Comments From wilson at gcc dot gnu dot org  2004-06-08 06:58 -------
Mine.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|jh at suse dot cz           |wilson at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[wilson at gcc dot gnu dot org]

------- Additional Comments From wilson at gcc dot gnu dot org  2004-06-08 06:59 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-06-10 08:43 -------
Subject: Bug 15569

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	jakub@gcc.gnu.org	2004-06-10 08:43:16

Modified files:
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: 20040609-1.c 

Log message:
	PR target/15569
	PR rtl-optimization/15681
	* gcc.dg/20040609-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3836&r2=1.3837
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/20040609-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-06-10 08:46 -------
Subject: Bug 15569

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	jakub@gcc.gnu.org	2004-06-10 08:46:10

Modified files:
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: 20040609-1.c 

Log message:
	PR target/15569
	PR rtl-optimization/15681
	* gcc.dg/20040609-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3389.2.201&r2=1.3389.2.202
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/20040609-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-06-28 22:28 -------
Subject: Bug 15569

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_3-rhl-branch
Changes by:	jakub@gcc.gnu.org	2004-06-28 22:28:32

Modified files:
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: 20040609-1.c 

Log message:
	PR target/15569
	PR rtl-optimization/15681
	* gcc.dg/20040609-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-rhl-branch&r1=1.2261.2.170.2.59&r2=1.2261.2.170.2.60
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/20040609-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_3-rhl-branch&r1=NONE&r2=1.1.10.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569

[Bug target/15569] [3.4 regression] Gcc 3.4.1 failed to build ia64 2.6.6 kernel

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-07-01 10:52 -------
Subject: Bug 15569

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_2-rhl8-branch
Changes by:	jakub@gcc.gnu.org	2004-07-01 10:52:31

Modified files:
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: 20040609-1.c 

Log message:
	PR target/15569
	PR rtl-optimization/15681
	* gcc.dg/20040609-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=1.1672.2.166.2.8.2.82&r2=1.1672.2.166.2.8.2.83
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/20040609-1.c.diff?cvsroot=gcc&only_with_tag=gcc-3_2-rhl8-branch&r1=NONE&r2=1.1.12.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15569