public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts
@ 2012-09-08 9:28 jan.smets@alcatel-lucent.com
2012-09-08 13:19 ` [Bug rtl-optimization/54524] " jan.smets@alcatel-lucent.com
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: jan.smets@alcatel-lucent.com @ 2012-09-08 9:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Bug #: 54524
Summary: Spurious add on sum of bitshifts
Classification: Unclassified
Product: gcc
Version: 4.6.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: jan.smets@alcatel-lucent.com
There is an spurious addiu a2,a2,1 which causes the result to be
incorrect.
tUint32 is unsigned long long
MIPS O32
GCC 4.6.3
-nostdinc -funsigned-char -fno-builtin -march=mips2 -G 0 -mno-gpopt
-msoft-float -fno-merge-constants -pipe -Wall -O2 -fno-optimize-sibling-calls
-fno-partial-inlining -fno-reorder-blocks -fno-strict-aliasing
PUBLIC void function(
tUint32 index160,
tUint8 * data)
{
tUint8 temp_data[160/8];
tUint32 scrambled_address;
*(tUint64*)(temp_data+8) = *(tUint64*)(data+8);
scrambled_address = index160;
printf("%16llX.\n",
0x4000000000400000ull +
(((tUint64)*(tUint16*)(temp_data+12)) << 24) +
((tUint64)(scrambled_address & 0xFF) << 56));
}
0x364c70c 27bdffd0 addiu sp,sp,-48
0x364c710 afbf002c sw ra,44(sp)
0x364c714 8ca8000c lw t0,12(a1) t0 = pp qq rr ss
0x364c718 3c030040 lui v1,0x40 v1 = 00 40 00 00
0x364c71c 3c024000 lui v0,0x4000 v0 = 40 00 00 00
0x364c720 00085402 srl t2,t0,16 t2 = 00 00 pp qq
0x364c724 000a4e00 sll t1,t2,24 t1 = qq 00 00 00
0x364c728 01233821 addu a3,t1,v1 a3 = qq 40 00 00
0x364c72c 000a5202 srl t2,t2,8 t2 = 00 00 00 pp
0x364c730 00e9482b sltu t1,a3,t1 t1 = carry?
0x364c734 01421021 addu v0,t2,v0 v0 = 40 00 00 pp
0x364c738 00042600 sll a0,a0,24 a0 = index160 << 24
0x364c73c 8ca30008 lw v1,8(a1)
0x364c740 01221021 addu v0,t1,v0 v0 += carry
0x364c744 00443021 addu a2,v0,a0 a2 = v0 + index160 << 24
0x364c748 3c04066e lui a0,0x66e \_ String address
0x364c74c 24842084 addiu a0,a0,8324 /
0x364c750 24c60001 addiu a2,a2,1 - Spurious add
0x364c754 afa30018 sw v1,24(sp)
0x364c758 0cb402e1 jal printf - Takes a0 = string. a1 = low word,
a2 = high word
0x364c75c afa8001c sw t0,28(sp)
0x364c760 8fbf002c lw ra,44(sp)
0x364c764 8fe00000 lw zero,0(ra) (internal extension)
0x364c768 03e00008 jr ra
0x364c76c 27bd0030 addiu sp,sp,48
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] Spurious add on sum of bitshifts
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
@ 2012-09-08 13:19 ` jan.smets@alcatel-lucent.com
2012-09-18 8:22 ` [Bug rtl-optimization/54524] Spurious add on sum of bitshifts (forward-propagate issue) jan.smets@alcatel-lucent.com
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jan.smets@alcatel-lucent.com @ 2012-09-08 13:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
--- Comment #1 from Jan Smets <jan.smets@alcatel-lucent.com> 2012-09-08 13:18:48 UTC ---
Created attachment 28152
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28152
testcase
The result is correct with -fno-forward-propagate
tUint64 is unsigned long long I meant.
An even more reduced testcase is attached. Compile it with a MIPS cross
compiler:
./gcc -nostdinc -funsigned-char -fno-builtin -G 0 -mno-gpopt -msoft-float
-fno-merge-constants -pipe -Wall -O2 -fno-optimize-sibling-calls
-fno-partial-inlining -fno-reorder-blocks -fno-strict-aliasing -c /tmp/test.c
-o test -mabi=32
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
2012-09-08 13:19 ` [Bug rtl-optimization/54524] " jan.smets@alcatel-lucent.com
@ 2012-09-18 8:22 ` jan.smets@alcatel-lucent.com
2012-09-18 12:42 ` jan.smets@alcatel-lucent.com
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jan.smets@alcatel-lucent.com @ 2012-09-18 8:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Jan Smets <jan.smets@alcatel-lucent.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |major
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
2012-09-08 13:19 ` [Bug rtl-optimization/54524] " jan.smets@alcatel-lucent.com
2012-09-18 8:22 ` [Bug rtl-optimization/54524] Spurious add on sum of bitshifts (forward-propagate issue) jan.smets@alcatel-lucent.com
@ 2012-09-18 12:42 ` jan.smets@alcatel-lucent.com
2012-09-18 13:06 ` [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] " rguenth at gcc dot gnu.org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jan.smets@alcatel-lucent.com @ 2012-09-18 12:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Jan Smets <jan.smets@alcatel-lucent.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|mips |mipsisa64-octeon-elf
Known to work| |4.5.0, 4.5.4
Known to fail| |4.6.0, 4.6.3, 4.7.1, 4.8.0
--- Comment #2 from Jan Smets <jan.smets@alcatel-lucent.com> 2012-09-18 12:41:43 UTC ---
GCC 4.5.4 => CORRECT
====================
0: 27bdffd0 addiu sp,sp,-48
4: 97a5001c lhu a1,28(sp)
8: 000427c0 sll a0,a0,0x1f
c: 00053600 sll a2,a1,0x18
10: 3c030040 lui v1,0x40
14: 00052a02 srl a1,a1,0x8
18: 00a42821 addu a1,a1,a0
1c: 00c33821 addu a3,a2,v1
20: 3c024000 lui v0,0x4000
24: 00e6302b sltu a2,a3,a2
28: 00a21021 addu v0,a1,v0
2c: 3c040000 lui a0,0x0
2c: R_MIPS_HI16 .rodata
30: 24840000 addiu a0,a0,0
30: R_MIPS_LO16 .rodata
34: afbf002c sw ra,44(sp)
38: 0c000000 jal 0 <function>
38: R_MIPS_26 printf
3c: 00c23021 addu a2,a2,v0 <= !
40: 8fbf002c lw ra,44(sp)
44: 03e00008 jr ra
48: 27bd0030 addiu sp,sp,48
GCC 4.6.3
=========
0: 27bdffd0 addiu sp,sp,-48
4: 97a5001c lhu a1,28(sp)
8: 3c030040 lui v1,0x40
c: 3c024000 lui v0,0x4000
10: 00054600 sll t0,a1,0x18
14: 01033821 addu a3,t0,v1
18: 00052a02 srl a1,a1,0x8
1c: 00e8402b sltu t0,a3,t0
20: 00a21021 addu v0,a1,v0
24: 000427c0 sll a0,a0,0x1f
28: 01023021 addu a2,t0,v0
2c: 00c43021 addu a2,a2,a0
30: 3c040000 lui a0,0x0
30: R_MIPS_HI16 .rodata
34: 24840000 addiu a0,a0,0
34: R_MIPS_LO16 .rodata
38: afbf002c sw ra,44(sp)
3c: 0c000000 jal 0 <function>
3c: R_MIPS_26 printf
40: 24c60001 addiu a2,a2,1 <= !
44: 8fbf002c lw ra,44(sp)
48: 03e00008 jr ra
4c: 27bd0030 addiu sp,sp,48
GCC 4.8.0
=========
0: 27bdffd0 addiu sp,sp,-48
4: 97a6001c lhu a2,28(sp)
8: 3c030040 lui v1,0x40
c: 00062e00 sll a1,a2,0x18
10: 00a33821 addu a3,a1,v1
14: 00063202 srl a2,a2,0x8
18: 3c024000 lui v0,0x4000
1c: 00e5282b sltu a1,a3,a1
20: 00c21021 addu v0,a2,v0
24: 000427c0 sll a0,a0,0x1f
28: 00a21021 addu v0,a1,v0
2c: 00443021 addu a2,v0,a0
30: 3c040000 lui a0,0x0
30: R_MIPS_HI16 .rodata
34: 24840000 addiu a0,a0,0
34: R_MIPS_LO16 .rodata
38: afbf002c sw ra,44(sp)
3c: 0c000000 jal 0 <function>
3c: R_MIPS_26 printf
40: 24c60001 addiu a2,a2,1 <= !
44: 8fbf002c lw ra,44(sp)
48: 03e00008 jr ra
4c: 27bd0030 addiu sp,sp,48
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (2 preceding siblings ...)
2012-09-18 12:42 ` jan.smets@alcatel-lucent.com
@ 2012-09-18 13:06 ` rguenth at gcc dot gnu.org
2012-09-18 21:49 ` jan.smets@alcatel-lucent.com
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-09-18 13:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.6.4
Summary|Spurious add on sum of |[4.6/4.7/4.8 Regression]
|bitshifts |Spurious add on sum of
|(forward-propagate issue) |bitshifts
| |(forward-propagate issue)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (3 preceding siblings ...)
2012-09-18 13:06 ` [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] " rguenth at gcc dot gnu.org
@ 2012-09-18 21:49 ` jan.smets@alcatel-lucent.com
2012-09-19 1:39 ` pinskia at gcc dot gnu.org
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jan.smets@alcatel-lucent.com @ 2012-09-18 21:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
--- Comment #3 from Jan Smets <jan.smets@alcatel-lucent.com> 2012-09-18 21:49:21 UTC ---
This commit introduced the bug:
http://gcc.gnu.org/viewcvs?view=revision&revision=161655
(or 182cf5a9a415f31df0f9a10e46faed1221484a35 in git)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (4 preceding siblings ...)
2012-09-18 21:49 ` jan.smets@alcatel-lucent.com
@ 2012-09-19 1:39 ` pinskia at gcc dot gnu.org
2012-09-19 8:46 ` rguenth at gcc dot gnu.org
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-09-19 1:39 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-09-19
Ever Confirmed|0 |1
Severity|major |normal
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-09-19 01:39:38 UTC ---
As far as I can tell, Richard's patch just exposed a latent bug as I was
looking into the dumps.
In insn 28, replacing
(ltu:SI (reg:SI 231 [+4 ])
(reg:SI 229 [+4 ]))
with (const_int 1 [0x1])
Changed insn 28
deferring rescan insn with uid = 28.
after cse:
(insn 27 43 28 2 (set (reg:SI 231 [+4 ])
(plus:SI (reg:SI 229 [+4 ])
(const_int 0 [0]))) t.c:24 10 {*addsi3}
(nil))
(insn 28 27 29 2 (set (reg:SI 212)
(ltu:SI (reg:SI 231 [+4 ])
(reg:SI 229 [+4 ]))) t.c:24 521 {*sltu_sisi}
(nil))
So this is a bug in CSE which is not simplifying that addsi3 into just a move
for some reason.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (5 preceding siblings ...)
2012-09-19 1:39 ` pinskia at gcc dot gnu.org
@ 2012-09-19 8:46 ` rguenth at gcc dot gnu.org
2012-09-22 22:26 ` pinskia at gcc dot gnu.org
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-09-19 8:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-09-19 08:46:37 UTC ---
Still non-canonical RTL should not result in wrong-code.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (6 preceding siblings ...)
2012-09-19 8:46 ` rguenth at gcc dot gnu.org
@ 2012-09-22 22:26 ` pinskia at gcc dot gnu.org
2012-11-02 23:33 ` pinskia at gcc dot gnu.org
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-09-22 22:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-09-22 22:26:37 UTC ---
I think this code:
/* (LTU/GEU (PLUS a C) C), where C is constant, can be simplified to
(GEU/LTU a -C). Likewise for (LTU/GEU (PLUS a C) a). */
Is what is causing the issue as that is only true if C is non-zero.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (7 preceding siblings ...)
2012-09-22 22:26 ` pinskia at gcc dot gnu.org
@ 2012-11-02 23:33 ` pinskia at gcc dot gnu.org
2012-11-02 23:34 ` [Bug rtl-optimization/54524] [4.6/4.7 " pinskia at gcc dot gnu.org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-11-02 23:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-11-02 23:32:38 UTC ---
Author: pinskia
Date: Fri Nov 2 23:32:32 2012
New Revision: 193111
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193111
Log:
2012-11-02 Andrew Pinski <apinski@cavium.com>
PR rtl-opt/54524
* simplify-rtx.c (simplify_relational_operation_1): Don't simplify
(LTU/GEU (PLUS a 0) 0) into (GEU/LTU a 0) since they are not
equivalent.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/simplify-rtx.c
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (8 preceding siblings ...)
2012-11-02 23:33 ` pinskia at gcc dot gnu.org
@ 2012-11-02 23:34 ` pinskia at gcc dot gnu.org
2012-11-03 18:25 ` jan.smets@alcatel-lucent.com
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-11-02 23:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.8.0
Summary|[4.6/4.7/4.8 Regression] |[4.6/4.7 Regression]
|Spurious add on sum of |Spurious add on sum of
|bitshifts |bitshifts
|(forward-propagate issue) |(forward-propagate issue)
Known to fail|4.8.0 |
--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-11-02 23:33:46 UTC ---
Fixed on the trunk.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (9 preceding siblings ...)
2012-11-02 23:34 ` [Bug rtl-optimization/54524] [4.6/4.7 " pinskia at gcc dot gnu.org
@ 2012-11-03 18:25 ` jan.smets@alcatel-lucent.com
2012-12-03 15:43 ` rguenth at gcc dot gnu.org
2013-01-07 13:31 ` jan.smets@alcatel-lucent.com
12 siblings, 0 replies; 14+ messages in thread
From: jan.smets@alcatel-lucent.com @ 2012-11-03 18:25 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
--- Comment #9 from Jan Smets <jan.smets@alcatel-lucent.com> 2012-11-03 18:25:32 UTC ---
Verified. Thanks Andrew.
(Should I mark it as Resolved?)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (10 preceding siblings ...)
2012-11-03 18:25 ` jan.smets@alcatel-lucent.com
@ 2012-12-03 15:43 ` rguenth at gcc dot gnu.org
2013-01-07 13:31 ` jan.smets@alcatel-lucent.com
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-03 15:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug rtl-optimization/54524] [4.6/4.7 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
` (11 preceding siblings ...)
2012-12-03 15:43 ` rguenth at gcc dot gnu.org
@ 2013-01-07 13:31 ` jan.smets@alcatel-lucent.com
12 siblings, 0 replies; 14+ messages in thread
From: jan.smets@alcatel-lucent.com @ 2013-01-07 13:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Jan Smets <jan.smets@alcatel-lucent.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #10 from Jan Smets <jan.smets@alcatel-lucent.com> 2013-01-07 13:30:40 UTC ---
Verified
^ permalink raw reply [flat|nested] 14+ messages in thread
end of thread, other threads:[~2013-01-07 13:31 UTC | newest]
Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-09-08 9:28 [Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts jan.smets@alcatel-lucent.com
2012-09-08 13:19 ` [Bug rtl-optimization/54524] " jan.smets@alcatel-lucent.com
2012-09-18 8:22 ` [Bug rtl-optimization/54524] Spurious add on sum of bitshifts (forward-propagate issue) jan.smets@alcatel-lucent.com
2012-09-18 12:42 ` jan.smets@alcatel-lucent.com
2012-09-18 13:06 ` [Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] " rguenth at gcc dot gnu.org
2012-09-18 21:49 ` jan.smets@alcatel-lucent.com
2012-09-19 1:39 ` pinskia at gcc dot gnu.org
2012-09-19 8:46 ` rguenth at gcc dot gnu.org
2012-09-22 22:26 ` pinskia at gcc dot gnu.org
2012-11-02 23:33 ` pinskia at gcc dot gnu.org
2012-11-02 23:34 ` [Bug rtl-optimization/54524] [4.6/4.7 " pinskia at gcc dot gnu.org
2012-11-03 18:25 ` jan.smets@alcatel-lucent.com
2012-12-03 15:43 ` rguenth at gcc dot gnu.org
2013-01-07 13:31 ` jan.smets@alcatel-lucent.com
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).