[Bug c/14715] New: internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[Bug c/14715] New: internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[eger at theboonies dot us]

When trying to build mozilla-1.6-r1 (on gentoo) the build dies with the
following error message:

gcc -o jsobj.o -c -DOSTYPE=\"Linux2.4\" -DOSARCH=\"Linux\" -DEXPORT_JS_API 
-DJS_USE_SAFE_ARENA   -I../../dist/include/js -I../../dist/include
-I/var/tmp/portage/mozilla-1.6-r1/work/mozilla/dist/include/nspr     -I.
-I/usr/X11R6/include   -fPIC -I/usr/X11R6/include -Wall -W -Wno-unused
-Wpointer-arith -Wcast-align -Wno-long-long -O2 -pipe -mcpu=7450 -s -fforce-addr
-fno-strict-aliasing -pthread -pipe  -DNDEBUG -DTRIMMED -ffunction-sections -O2
 -I/usr/X11R6/include -include ../../mozilla-config.h -DMOZILLA_CLIENT
-Wp,-MD,.deps/jsobj.pp jsobj.c
jsobj.c: In function `js_DefineNativeProperty':
jsobj.c:2315: error: Attempt to delete prologue/epilogue insn:
(insn/f 692 691 693 0 (nil) (set (mem:SI (plus:SI (reg/f:SI 1 r1)
                (const_int 32 [0x20])) [0 S4 A8])
        (reg:SI 20 r20)) -1 (nil)
    (expr_list:REG_FRAME_RELATED_EXPR (set (mem:SI (plus:SI (reg/f:SI 1 r1)
                    (const_int 32 [0x20])) [0 S4 A8])
            (reg:SI 20 r20))
        (nil)))
jsobj.c:2315: internal compiler error: in propagate_one_insn, at flow.c:1741

make[3]: *** [jsobj.o] Error 1
make[3]: Leaving directory `/var/tmp/portage/mozilla-1.6-r1/work/mozilla/js/src'
make[2]: *** [libs] Error 2
make[2]: Leaving directory `/var/tmp/portage/mozilla-1.6-r1/work/mozilla/js'
make[1]: *** [tier_2] Error 2
make[1]: Leaving directory `/var/tmp/portage/mozilla-1.6-r1/work/mozilla'
make: *** [default] Error 2

-- 
           Summary: internal compiler bug in gcc 3.3.3_pre20040215 triggered
                    by mozilla-1.6r1 source
           Product: gcc
           Version: 3.3.4
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: eger at theboonies dot us
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: ppc-linux-gnu
  GCC host triplet: ppc-linux-gnu
GCC target triplet: ppc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug c/14715] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[eger at theboonies dot us]

------- Additional Comments From eger at theboonies dot us  2004-03-24 12:14 -------
Created an attachment (id=5988)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5988&action=view)
preprocessed source


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|critical                    |normal
          Component|c                           |target


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[lu_zero at gentoo dot org]

------- Additional Comments From lu_zero at gentoo dot org  2004-04-07 12:20 -------
the same issue reported on the latest snapshot from the 20040407.
strangely enough seems that building with the -O2 avoid the issue, but produces
wrong code.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[lu_zero at gentoo dot org]

------- Additional Comments From lu_zero at gentoo dot org  2004-04-07 12:26 -------
just to make life easyer: the gcc-3.3.3_pre${date} is the snapshot from the
hammer-3_3-branch from the same date.

the problem is present on every mozilla and alwasy on the same file, I couldn't
reduce it to a proper testcase yet

the bug seems to be trigger by the absence of -fstrict-aliasing (that's why -O2
doesn't show the problem but -O1 does)

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.3-hammer] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-07 13:34 -------
I cannot reproduce this on either the mainline or the 3.3 branch so it must only effect the hammer 
branch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
      Known to work|                            |3.5.0 3.3.4
            Summary|internal compiler bug in gcc|[3.3-hammer] internal
                   |3.3.3_pre20040215 triggered |compiler bug in gcc
                   |by mozilla-1.6r1 source     |3.3.3_pre20040215 triggered
                   |                            |by mozilla-1.6r1 source
            Version|3.3.4                       |3.3.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.3-hammer] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2004-04-15 07:01 -------
*** Bug 14953 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lu_zero at gentoo dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.3-hammer] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[amodra at bigpond dot net dot au]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |amodra at bigpond dot net
                   |dot org                     |dot au
             Status|UNCONFIRMED                 |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.3-hammer] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2004-04-15 07:52 -------
>From my preliminary analysis, I would guess that this bug affects 3.4 and 3.5
too, and it's just a matter of finding the right testcase.

With hammer branch, the underlying problem is that a stack temp is allocated to
the same location as a gpr save slot.  Flow analysis notices that the gpr save
is overwritten, so decides that the gpr save is dead and should be deleted. 
This leads to the ICE.

Stack vars and temps are allocated at STARTING_FRAME_OFFSET, which rs6000.h
defines as:
#define STARTING_FRAME_OFFSET						\
  (RS6000_ALIGN (current_function_outgoing_args_size,			\
		 TARGET_ALTIVEC ? 16 : 8)				\
   + RS6000_VARARGS_AREA						\
   + RS6000_SAVE_AREA)

The first term of this expression accounts for parameter save area, but
rs6000.c:rs6000_stack_info uses
  info_ptr->parm_size    = RS6000_ALIGN (current_function_outgoing_args_size,
					 8);

It is the difference in alignment that results in stack layout errors.  Note
that this error may be masked by alignment of other elements of the stack.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aldyh at redhat dot com
      Known to work|3.5.0 3.3.4                 |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.3-hammer] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[amodra at bigpond dot net dot au]

------- Additional Comments From amodra at bigpond dot net dot au  2004-04-15 08:12 -------
Patch at http://gcc.gnu.org/ml/gcc-patches/2004-04/msg00879.html

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.3-hammer] internal compiler bug in gcc 3.3.3_pre20040215 triggered by mozilla-1.6r1 source

[giovannibajo at libero dot it]

------- Additional Comments From giovannibajo at libero dot it  2004-04-15 09:41 -------
Alan, if you're positive that the patch is needed for 3.3 (non hammer), 3.4 and 
mainline as well, would you please update the bug summary to reflect that this 
is a indeed a regression?

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] Altivec stack layout may overlap gpr save with stack temps

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-04-17 12:40 -------
Subject: Bug 14715

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	amodra@gcc.gnu.org	2004-04-17 12:40:07

Modified files:
	gcc            : ChangeLog 
	gcc/config/rs6000: rs6000.c 

Log message:
	PR target/14715
	* config/rs6000/rs6000.c (rs6000_stack_info): Make parm_size agree
	with STARTING_FRAME_OFFSET.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.3422&r2=2.3423
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.c.diff?cvsroot=gcc&r1=1.624&r2=1.625



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] Altivec stack layout may overlap gpr save with stack temps

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-04-17 12:44 -------
Subject: Bug 14715

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	hammer-3_3-branch
Changes by:	amodra@gcc.gnu.org	2004-04-17 12:44:40

Modified files:
	gcc            : ChangeLog.hammer 
	gcc/config/rs6000: rs6000.c 

Log message:
	PR target/14715
	* config/rs6000/rs6000.c (rs6000_stack_info): Make parm_size agree
	with STARTING_FRAME_OFFSET.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.hammer.diff?cvsroot=gcc&only_with_tag=hammer-3_3-branch&r1=1.1.2.386&r2=1.1.2.387
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.c.diff?cvsroot=gcc&only_with_tag=hammer-3_3-branch&r1=1.397.2.36&r2=1.397.2.37



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.4 only] Altivec stack layout may overlap gpr save with stack temps

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |3.5.0
            Summary|Altivec stack layout may    |[3.4 only] Altivec stack
                   |overlap gpr save with stack |layout may overlap gpr save
                   |temps                       |with stack temps
   Target Milestone|---                         |3.4.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.4 only] Altivec stack layout may overlap gpr save with stack temps

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-04-30 16:43 -------
Subject: Bug 14715

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	dje@gcc.gnu.org	2004-04-30 16:43:50

Modified files:
	gcc            : ChangeLog 
	gcc/doc        : install.texi invoke.texi 
	gcc/config/rs6000: rs6000.c rs6000.h rs6000.md 
Added files:
	gcc/config/rs6000: power5.md 

Log message:
	2004-04-19  David Edelsohn  <edelsohn@gnu.org>
	
	* doc/install.texi (*-ibm-aix*): Add AIX 5.1 assembler and archiver
	fix information.
	
	2004-04-17  Alan Modra  <amodra@bigpond.net.au>
	
	PR target/14715
	* config/rs6000/rs6000.c (rs6000_stack_info): Make parm_size agree
	with STARTING_FRAME_OFFSET.
	
	2004-04-07  David Edelsohn  <edelsohn@gnu.org>
	
	* config/rs6000/rs6000.c (processor_target_table): Add MASK_MFCRF
	to power4 and power5 entries.
	
	2004-04-05  David Edelsohn
	
	* config/rs6000/rs6000.c (VTABLE_NAME_P): Add _ZTI to special
	symbol handling.
	
	2004-03-30  Hartmut Penner  <hpenner@de.ibm.com>
	
	PR 11591
	* config/rs6000/rs6000.c (rs6000_legitimate_address):
	Allow any offset to argument pointer in no-strict case.
	
	2004-03-25  David Edelsohn  <edelsohn@gnu.org>
	
	* config/rs6000/rs6000.c (rs6000_always_hint): New variable.
	(rs6000_sched_groups): New variable.
	(processor_target_table): Add power5.
	(rs6000_override_options): Set rs6000_sched_insert_nops,
	rs6000_sched_costly_dep and rs6000_sched_restricted_insns_priority
	from rs6000_sched_groups.
	(output_cbranch): Use rs6000_always_hint.
	(rs6000_variable_issue): Use rs6000_sched_groups.
	(rs6000_adjust_cost): Add CPU_POWER5.
	(is_microcoded_insn): Use rs6000_sched_groups.
	(is_dispatch_slot_restricted): Use rs6000_sched_groups.
	Return 2 for POWER5 cracked instructions.
	(is_cracked_insn): Use rs6000_sched_groups.
	(is_branch_slot_insn): Use rs6000_sched_groups.
	(rs6000_issue_rate): Add CPU_POWER5.
	(rs6000_sched_finish): Use rs6000_sched_groups.
	(rs6000_rtx_costs): Add PROCESSOR_POWER5.
	* config/rs6000/rs6000.h (processor_type): Add PROCESSOR_POWER5.
	(DEFAULT_SCHED_COSTLY_DEP): Delete.
	(DEFAULT_RESTRICTED_INSNS_PRIORITY): Delete.
	(DEFAULT_SCHED_FINISH_NOP_INSERTION_SCHEME): Delete.
	* config/rs6000/rs6000.md (define_attr "cpu"): Add power5.
	* config/rs6000/power5.md: New file.
	* doc/invoke.texi: Add power5 option.
	
	2004-03-17  Fariborz Jahanian <fjahanian@apple.com>
	
	* config/rs6000/rs6000.c (rs6000_stack_info): correct reg_size
	for mixed mode.
	(rs6000_emit_prologue): Ditto.
	(rs6000_emit_epilogue): Ditto.
	* config/rs6000/rs6000.h: Definition of DWARF_CIE_DATA_ALIGNMENT
	macro for mixed mode.
	
	2004-03-04  David Edelsohn  <edelsohn@gnu.org>
	GP <gp@qnx.com>
	
	* config/rs6000/rs6000.c (output_function_profiler): Append @plt
	when compiling PIC.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.426&r2=2.2326.2.427
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/install.texi.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.248.4.17&r2=1.248.4.18
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/invoke.texi.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.390.2.26&r2=1.390.2.27
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/power5.md.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.18.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.576.2.16&r2=1.576.2.17
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.h.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.306.4.3&r2=1.306.4.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/rs6000/rs6000.md.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.284.4.9&r2=1.284.4.10



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715

[Bug target/14715] [3.4 only] Altivec stack layout may overlap gpr save with stack temps

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-04-30 17:05 -------
Fixed in 3.4.1.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14715