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* [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64
@ 2013-05-01 12:16 anton at samba dot org
2013-05-01 14:32 ` [Bug middle-end/57134] " amodra at gmail dot com
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: anton at samba dot org @ 2013-05-01 12:16 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
Bug #: 57134
Summary: ICE with -mstrict-align and inline assembly on ppc64
Classification: Unclassified
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: anton@samba.org
Created attachment 29987
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29987
Testcase that ICE's with -mstrict-align on ppc64
The following testcase passes on a ppc64 4.7.2 build but fails on a 4.9.0
20130501 build:
# gcc -m64 -O2 -S -mstrict-align testcase.c
testcase.c: In function 'rb_remove_pages':
testcase.c:16:2: internal compiler error: in expand_asm_operands, at stmt.c:910
__asm__ __volatile__("# %0,%1" : "=r"(t) : "m"(v->counter));
^
0x10604437 expand_asm_operands
../../gcc/gcc/stmt.c:910
0x10604b3b expand_asm_stmt(gimple_statement_d*)
../../gcc/gcc/stmt.c:1151
0x1022f357 expand_gimple_stmt_1
../../gcc/gcc/cfgexpand.c:2154
0x1022f357 expand_gimple_stmt
../../gcc/gcc/cfgexpand.c:2309
0x10230b77 expand_gimple_basic_block
../../gcc/gcc/cfgexpand.c:4143
0x10233f7b gimple_expand_cfg
../../gcc/gcc/cfgexpand.c:4662
Please submit a full bug report,
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/57134] ICE with -mstrict-align and inline assembly on ppc64
2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
@ 2013-05-01 14:32 ` amodra at gmail dot com
2013-05-02 8:06 ` [Bug middle-end/57134] [4.9 Regression] " rguenth at gcc dot gnu.org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: amodra at gmail dot com @ 2013-05-01 14:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-05-01
CC| |amodra at gmail dot com
Ever Confirmed|0 |1
--- Comment #1 from Alan Modra <amodra at gmail dot com> 2013-05-01 14:32:49 UTC ---
I think the bug here is that we lose EXPAND_MEMORY when recursively calling
expand_expr() for the inner part of a COMPONENT_REF.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/57134] [4.9 Regression] ICE with -mstrict-align and inline assembly on ppc64
2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
2013-05-01 14:32 ` [Bug middle-end/57134] " amodra at gmail dot com
@ 2013-05-02 8:06 ` rguenth at gcc dot gnu.org
2013-06-12 9:29 ` amodra at gmail dot com
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-05-02 8:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc64
Known to work| |4.7.2
Target Milestone|--- |4.9.0
Summary|ICE with -mstrict-align and |[4.9 Regression] ICE with
|inline assembly on ppc64 |-mstrict-align and inline
| |assembly on ppc64
Known to fail| |4.9.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2013-05-02 08:06:45 UTC ---
Eventually somebody check 4.8.x.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/57134] [4.9 Regression] ICE with -mstrict-align and inline assembly on ppc64
2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
2013-05-01 14:32 ` [Bug middle-end/57134] " amodra at gmail dot com
2013-05-02 8:06 ` [Bug middle-end/57134] [4.9 Regression] " rguenth at gcc dot gnu.org
@ 2013-06-12 9:29 ` amodra at gmail dot com
2013-08-04 12:32 ` anton at samba dot org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: amodra at gmail dot com @ 2013-06-12 9:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
URL| |http://gcc.gnu.org/ml/gcc-p
| |atches/2013-06/msg00642.htm
| |l
Assignee|unassigned at gcc dot gnu.org |amodra at gmail dot com
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/57134] [4.9 Regression] ICE with -mstrict-align and inline assembly on ppc64
2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
` (2 preceding siblings ...)
2013-06-12 9:29 ` amodra at gmail dot com
@ 2013-08-04 12:32 ` anton at samba dot org
2013-09-16 13:20 ` jamborm at gcc dot gnu.org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: anton at samba dot org @ 2013-08-04 12:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
--- Comment #3 from Anton Blanchard <anton at samba dot org> ---
Created attachment 30607
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30607&action=edit
Compilation failure with -mstrict-align on ppc64
The original testcase isn't failing, but this test fails to compile with
-mstrict-align:
/tmp/testcase.c: In function 'testcase':
/tmp/testcase.c:12:2: error: output number 0 not directly addressable
asm volatile("# %0": "+m" (b->zot));
^
and passes without -mstrict-align.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/57134] [4.9 Regression] ICE with -mstrict-align and inline assembly on ppc64
2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
` (3 preceding siblings ...)
2013-08-04 12:32 ` anton at samba dot org
@ 2013-09-16 13:20 ` jamborm at gcc dot gnu.org
2013-09-16 13:49 ` amodra at gmail dot com
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jamborm at gcc dot gnu.org @ 2013-09-16 13:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I suppose this has been fixed by r200086 ?
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/57134] [4.9 Regression] ICE with -mstrict-align and inline assembly on ppc64
2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
` (4 preceding siblings ...)
2013-09-16 13:20 ` jamborm at gcc dot gnu.org
@ 2013-09-16 13:49 ` amodra at gmail dot com
2013-09-24 11:32 ` amodra at gcc dot gnu.org
2013-09-24 11:33 ` amodra at gmail dot com
7 siblings, 0 replies; 9+ messages in thread
From: amodra at gmail dot com @ 2013-09-16 13:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
--- Comment #5 from Alan Modra <amodra at gmail dot com> ---
r200086 fixed Anton's first testcase but then he found another one. See
http://gcc.gnu.org/ml/gcc-patches/2013-09/msg00983.html
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/57134] [4.9 Regression] ICE with -mstrict-align and inline assembly on ppc64
2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
` (5 preceding siblings ...)
2013-09-16 13:49 ` amodra at gmail dot com
@ 2013-09-24 11:32 ` amodra at gcc dot gnu.org
2013-09-24 11:33 ` amodra at gmail dot com
7 siblings, 0 replies; 9+ messages in thread
From: amodra at gcc dot gnu.org @ 2013-09-24 11:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
--- Comment #6 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Tue Sep 24 11:32:28 2013
New Revision: 202866
URL: http://gcc.gnu.org/viewcvs?rev=202866&root=gcc&view=rev
Log:
PR middle-end/57134
PR middle-end/57586
* stmt.c (expand_asm_operands): Call expand_expr with
EXPAND_MEMORY for output operands that disallow regs. Don't
use EXPAND_WRITE on inout operands.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/stmt.c
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug middle-end/57134] [4.9 Regression] ICE with -mstrict-align and inline assembly on ppc64
2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
` (6 preceding siblings ...)
2013-09-24 11:32 ` amodra at gcc dot gnu.org
@ 2013-09-24 11:33 ` amodra at gmail dot com
7 siblings, 0 replies; 9+ messages in thread
From: amodra at gmail dot com @ 2013-09-24 11:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57134
Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Alan Modra <amodra at gmail dot com> ---
Fixed
^ permalink raw reply [flat|nested] 9+ messages in thread
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2013-05-01 12:16 [Bug middle-end/57134] New: ICE with -mstrict-align and inline assembly on ppc64 anton at samba dot org
2013-05-01 14:32 ` [Bug middle-end/57134] " amodra at gmail dot com
2013-05-02 8:06 ` [Bug middle-end/57134] [4.9 Regression] " rguenth at gcc dot gnu.org
2013-06-12 9:29 ` amodra at gmail dot com
2013-08-04 12:32 ` anton at samba dot org
2013-09-16 13:20 ` jamborm at gcc dot gnu.org
2013-09-16 13:49 ` amodra at gmail dot com
2013-09-24 11:32 ` amodra at gcc dot gnu.org
2013-09-24 11:33 ` amodra at gmail dot com
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