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* [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c
@ 2008-11-21 5:20 hjl dot tools at gmail dot com
2008-11-21 5:23 ` [Bug target/38208] " hjl dot tools at gmail dot com
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-11-21 5:20 UTC (permalink / raw)
To: gcc-bugs
On Linux/x86, revision 142072 gave:
Executing on host: /export/gnu/import/svn/gcc-test/bld/gcc/xgcc
-B/export/gnu/import/svn/gcc-test/bld/gcc/ -O3 -fomit-frame-pointer
-funroll-loops -w -c -m32 -o 20080806-1.o
/export/gnu/import/svn/gcc-test/src-trunk/gcc/testsuite/gcc.c-torture/compile/20080806-1.c
(timeout = 300)
/tmp/ccuL0Iug.s: Assembler messages:^M
/tmp/ccuL0Iug.s:9: Warning: 65544 shortened to 8^M
+FAIL: gcc.c-torture/compile/20080806-1.c -O3 -fomit-frame-pointer (test for
excess errors)
+FAIL: gcc.c-torture/compile/20080806-1.c -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions (test for excess errors)
+FAIL: gcc.c-torture/compile/20080806-1.c -O3 -fomit-frame-pointer
-funroll-loops (test for excess errors)
Revision 142058 is OK.
--
Summary: [4.4 Regression] gcc.c-torture/compile/20080806-1.c
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl dot tools at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38208
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/38208] [4.4 Regression] gcc.c-torture/compile/20080806-1.c
2008-11-21 5:20 [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c hjl dot tools at gmail dot com
@ 2008-11-21 5:23 ` hjl dot tools at gmail dot com
2008-11-21 5:40 ` hjl dot tools at gmail dot com
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-11-21 5:23 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from hjl dot tools at gmail dot com 2008-11-21 05:22 -------
Revision 142061 is bad.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at redhat dot com,
| |ubizjak at gmail dot com
Summary|[4.4 Regression] gcc.c- |[4.4 Regression] gcc.c-
|torture/compile/20080806-1.c|torture/compile/20080806-1.c
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38208
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/38208] [4.4 Regression] gcc.c-torture/compile/20080806-1.c
2008-11-21 5:20 [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c hjl dot tools at gmail dot com
2008-11-21 5:23 ` [Bug target/38208] " hjl dot tools at gmail dot com
@ 2008-11-21 5:40 ` hjl dot tools at gmail dot com
2008-11-21 8:11 ` jakub at gcc dot gnu dot org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-11-21 5:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from hjl dot tools at gmail dot com 2008-11-21 05:39 -------
Revision 142061:
http://gcc.gnu.org/ml/gcc-patches/2008-11/msg01051.html
is the cause.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|ubizjak at gmail dot com |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38208
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/38208] [4.4 Regression] gcc.c-torture/compile/20080806-1.c
2008-11-21 5:20 [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c hjl dot tools at gmail dot com
2008-11-21 5:23 ` [Bug target/38208] " hjl dot tools at gmail dot com
2008-11-21 5:40 ` hjl dot tools at gmail dot com
@ 2008-11-21 8:11 ` jakub at gcc dot gnu dot org
2008-11-21 8:45 ` jakub at gcc dot gnu dot org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-11-21 8:11 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jakub at gcc dot gnu dot org 2008-11-21 08:09 -------
Just the cause that the optimized dump looks differently, but is not wrong.
The bug happens during reload's register elimination.
(insn:HI 6 5 7 2 20080806-1.c:16 (parallel [
(set (reg:HI 58 [ pretmp.42 ])
(plus:HI (subreg:HI (reg/f:SI 20 frame) 0)
(const_int 136 [0x88])))
(clobber (reg:CC 17 flags))
]) 293 {*addhi_1_lea} (expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
is reloaded into:
(insn 47 5 6 2 20080806-1.c:16 (set (reg:HI 1 dx [orig:58 pretmp.42 ] [58])
(reg:HI 7 sp)) 53 {*movhi_1} (nil))
(insn:HI 6 47 7 2 20080806-1.c:16 (parallel [
(set (reg:HI 1 dx [orig:58 pretmp.42 ] [58])
(plus:HI (reg:HI 1 dx [orig:58 pretmp.42 ] [58])
(const_int 65544 [0x10008])))
(clobber (reg:CC 17 flags))
]) 293 {*addhi_1_lea} (expr_list:REG_EQUIV (plus:HI (subreg:HI (plus:SI
(reg/f:SI 7 sp)
(const_int 65408 [0xff80])) 0)
(const_int 136 [0x88]))
(nil)))
eliminate_regs_in_insn calls plus_constant with
to_rtx (subreg:HI (reg/f:SI 7 sp) 0) and offset 0x10008. I guess it is
eliminate_regs_in_insn and not plus_constant responsibility to
trunc_int_for_mode this.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38208
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/38208] [4.4 Regression] gcc.c-torture/compile/20080806-1.c
2008-11-21 5:20 [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c hjl dot tools at gmail dot com
` (2 preceding siblings ...)
2008-11-21 8:11 ` jakub at gcc dot gnu dot org
@ 2008-11-21 8:45 ` jakub at gcc dot gnu dot org
2008-11-21 13:49 ` jakub at gcc dot gnu dot org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-11-21 8:45 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from jakub at gcc dot gnu dot org 2008-11-21 08:43 -------
Created an attachment (id=16731)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16731&action=view)
gcc44-pr38208.patch
I'll test the attached patch. Related to PR29599.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |jakub at gcc dot gnu dot org
|dot org |
Status|UNCONFIRMED |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38208
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/38208] [4.4 Regression] gcc.c-torture/compile/20080806-1.c
2008-11-21 5:20 [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c hjl dot tools at gmail dot com
` (3 preceding siblings ...)
2008-11-21 8:45 ` jakub at gcc dot gnu dot org
@ 2008-11-21 13:49 ` jakub at gcc dot gnu dot org
2008-11-21 17:05 ` hjl dot tools at gmail dot com
2008-11-23 18:58 ` pinskia at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-11-21 13:49 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from jakub at gcc dot gnu dot org 2008-11-21 13:48 -------
Subject: Bug 38208
Author: jakub
Date: Fri Nov 21 13:47:05 2008
New Revision: 142088
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142088
Log:
PR target/38208
* reload1.c (eliminate_regs_in_insn): For trunc_int_for_mode use
mode of PLUS, not mode of the eliminated register.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/reload1.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38208
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/38208] [4.4 Regression] gcc.c-torture/compile/20080806-1.c
2008-11-21 5:20 [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c hjl dot tools at gmail dot com
` (4 preceding siblings ...)
2008-11-21 13:49 ` jakub at gcc dot gnu dot org
@ 2008-11-21 17:05 ` hjl dot tools at gmail dot com
2008-11-23 18:58 ` pinskia at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-11-21 17:05 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from hjl dot tools at gmail dot com 2008-11-21 17:04 -------
Fixed.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38208
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/38208] [4.4 Regression] gcc.c-torture/compile/20080806-1.c
2008-11-21 5:20 [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c hjl dot tools at gmail dot com
` (5 preceding siblings ...)
2008-11-21 17:05 ` hjl dot tools at gmail dot com
@ 2008-11-23 18:58 ` pinskia at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-11-23 18:58 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
Target Milestone|--- |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38208
^ permalink raw reply [flat|nested] 8+ messages in thread
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2008-11-21 5:20 [Bug target/38208] New: [4.4 Regression] gcc.c-torture/compile/20080806-1.c hjl dot tools at gmail dot com
2008-11-21 5:23 ` [Bug target/38208] " hjl dot tools at gmail dot com
2008-11-21 5:40 ` hjl dot tools at gmail dot com
2008-11-21 8:11 ` jakub at gcc dot gnu dot org
2008-11-21 8:45 ` jakub at gcc dot gnu dot org
2008-11-21 13:49 ` jakub at gcc dot gnu dot org
2008-11-21 17:05 ` hjl dot tools at gmail dot com
2008-11-23 18:58 ` pinskia at gcc dot gnu dot org
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