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* [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code
@ 2009-08-31 12:14 siarhei dot siamashka at gmail dot com
2009-09-01 11:13 ` [Bug c/41196] " ramana at gcc dot gnu dot org
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: siarhei dot siamashka at gmail dot com @ 2009-08-31 12:14 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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When using vshll_n_u8 intrinsic, gcc 4.4.1 incorrectly rejects shift operand
having value >= 8, claiming that it is out of range.
When using the following test code
/*************/
#include <arm_neon.h>
uint16x8_t test_vshll_n_u8 (uint8x8_t a)
{
return vshll_n_u8(a, 8);
}
/*************/
Test with gcc 4.4.1:
# gcc -c -O2 -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp -fomit-frame-pointer
test.c
test.c: In function test_vshll_n_u8:
test.c:6: error: constant out of range
It used to work fine with cs2007q3:
# gcc -c -O2 -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp -fomit-frame-pointer
test.c
# objdump -d test.o
test.o: file format elf32-littlearm
Disassembly of section .text:
00000000 <test_vshll_n_u8>:
0: ec410b17 vmov d7, r0, r1
4: f3b26307 vshll.i8 q3, d7, #8
8: ec510b16 vmov r0, r1, d6
c: ec532b17 vmov r2, r3, d7
10: e12fff1e bx lr
--
Summary: The use of ARM NEON vshll_n_u8 intrinsic results in
compile error on valid code
Product: gcc
Version: 4.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: siarhei dot siamashka at gmail dot com
GCC build triplet: armv4tl-softfloat-linux-gnueabi
GCC host triplet: armv4tl-softfloat-linux-gnueabi
GCC target triplet: armv4tl-softfloat-linux-gnueabi
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
@ 2009-09-01 11:13 ` ramana at gcc dot gnu dot org
2009-09-04 1:10 ` [Bug target/41196] " dgutson at codesourcery dot com
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ramana at gcc dot gnu dot org @ 2009-09-01 11:13 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from ramana at gcc dot gnu dot org 2009-09-01 11:13 -------
Also occurs with trunk.
--
ramana at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2009-09-01 11:13:16
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
2009-09-01 11:13 ` [Bug c/41196] " ramana at gcc dot gnu dot org
@ 2009-09-04 1:10 ` dgutson at codesourcery dot com
2009-09-04 19:41 ` dgutson at gcc dot gnu dot org
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dgutson at codesourcery dot com @ 2009-09-04 1:10 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from dgutson at codesourcery dot com 2009-09-04 01:10 -------
I'm working on this now, and will post a fix tomorrow.
Please assign this bug to me, since seems I don't have permissions enough to do
that myself.
Thanks,
Daniel.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
2009-09-01 11:13 ` [Bug c/41196] " ramana at gcc dot gnu dot org
2009-09-04 1:10 ` [Bug target/41196] " dgutson at codesourcery dot com
@ 2009-09-04 19:41 ` dgutson at gcc dot gnu dot org
2009-09-25 21:29 ` dgutson at gcc dot gnu dot org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dgutson at gcc dot gnu dot org @ 2009-09-04 19:41 UTC (permalink / raw)
To: gcc-bugs
--
dgutson at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|dgutson at codesourcery dot |
|com |
AssignedTo|unassigned at gcc dot gnu |dgutson at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2009-09-01 11:13:16 |2009-09-04 19:41:04
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (2 preceding siblings ...)
2009-09-04 19:41 ` dgutson at gcc dot gnu dot org
@ 2009-09-25 21:29 ` dgutson at gcc dot gnu dot org
2009-09-25 21:35 ` dgutson at gcc dot gnu dot org
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dgutson at gcc dot gnu dot org @ 2009-09-25 21:29 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from dgutson at gcc dot gnu dot org 2009-09-25 21:28 -------
Created an attachment (id=18651)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18651&action=view)
Proposed fix
The attached patch attempts to solve the issue, by augmenting the range check
in order to match 0 < imm <= size (increasing size in 1).
I checked that the assembler DTRT, so the fix applies to gcc only.
I tested the patch with the gcc test suite plus a test cases I added (included
in the patch).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (3 preceding siblings ...)
2009-09-25 21:29 ` dgutson at gcc dot gnu dot org
@ 2009-09-25 21:35 ` dgutson at gcc dot gnu dot org
2009-10-14 19:20 ` dgutson at gcc dot gnu dot org
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dgutson at gcc dot gnu dot org @ 2009-09-25 21:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from dgutson at gcc dot gnu dot org 2009-09-25 21:35 -------
I forgot the ChangeLog:
gcc/
* config/arm/neon.md (neon_vshll_n<mode>): Checking Bounds
fixed.
gcc/testsuite/
* gcc.target/arm/neon/vfp-shift-a2t2.c: New test case.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (4 preceding siblings ...)
2009-09-25 21:35 ` dgutson at gcc dot gnu dot org
@ 2009-10-14 19:20 ` dgutson at gcc dot gnu dot org
2009-10-15 8:19 ` [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only] ramana at gcc dot gnu dot org
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dgutson at gcc dot gnu dot org @ 2009-10-14 19:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from dgutson at gcc dot gnu dot org 2009-10-14 19:20 -------
Committed since approved in
http://gcc.gnu.org/ml/gcc-patches/2009-10/msg00906.html
--
dgutson at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only]
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (5 preceding siblings ...)
2009-10-14 19:20 ` dgutson at gcc dot gnu dot org
@ 2009-10-15 8:19 ` ramana at gcc dot gnu dot org
2009-10-15 12:33 ` dgutson at codesourcery dot com
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ramana at gcc dot gnu dot org @ 2009-10-15 8:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from ramana at gcc dot gnu dot org 2009-10-15 08:19 -------
(In reply to comment #5)
> Committed since approved in
> http://gcc.gnu.org/ml/gcc-patches/2009-10/msg00906.html
This needs to be backported to 4.4 branch after the 4.4.2 release because the
original bug report came with the 4.4.1 release.
Daniel - could you take care of doing this once the 4.4 branch is updated ? I'm
reopening this bug as a 4.4 only bug at the minute.
--
ramana at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |
Summary|The use of ARM NEON |The use of ARM NEON
|vshll_n_u8 intrinsic results|vshll_n_u8 intrinsic results
|in compile error on valid |in compile error on valid
|code |code [4.4 only]
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only]
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (6 preceding siblings ...)
2009-10-15 8:19 ` [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only] ramana at gcc dot gnu dot org
@ 2009-10-15 12:33 ` dgutson at codesourcery dot com
2009-10-15 12:58 ` ramana at gcc dot gnu dot org
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dgutson at codesourcery dot com @ 2009-10-15 12:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from dgutson at codesourcery dot com 2009-10-15 12:33 -------
Subject: Re: The use of ARM NEON vshll_n_u8 intrinsic results
in compile error on valid code [4.4 only]
ramana at gcc dot gnu dot org wrote:
> ------- Comment #6 from ramana at gcc dot gnu dot org 2009-10-15 08:19 -------
> (In reply to comment #5)
>> Committed since approved in
>> http://gcc.gnu.org/ml/gcc-patches/2009-10/msg00906.html
>
> This needs to be backported to 4.4 branch after the 4.4.2 release because the
> original bug report came with the 4.4.1 release.
>
> Daniel - could you take care of doing this once the 4.4 branch is updated ? I'm
> reopening this bug as a 4.4 only bug at the minute.
Sure, I will.
Daniel.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only]
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (7 preceding siblings ...)
2009-10-15 12:33 ` dgutson at codesourcery dot com
@ 2009-10-15 12:58 ` ramana at gcc dot gnu dot org
2009-10-19 14:09 ` jakub at gcc dot gnu dot org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ramana at gcc dot gnu dot org @ 2009-10-15 12:58 UTC (permalink / raw)
To: gcc-bugs
--
ramana at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.4.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only]
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (8 preceding siblings ...)
2009-10-15 12:58 ` ramana at gcc dot gnu dot org
@ 2009-10-19 14:09 ` jakub at gcc dot gnu dot org
2009-12-11 11:54 ` ramana at gcc dot gnu dot org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: jakub at gcc dot gnu dot org @ 2009-10-19 14:09 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from jakub at gcc dot gnu dot org 2009-10-19 14:08 -------
4.4 branch is again open for bugfixes...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only]
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (9 preceding siblings ...)
2009-10-19 14:09 ` jakub at gcc dot gnu dot org
@ 2009-12-11 11:54 ` ramana at gcc dot gnu dot org
2009-12-11 11:55 ` ramana at gcc dot gnu dot org
2009-12-21 11:55 ` mikpe at it dot uu dot se
12 siblings, 0 replies; 14+ messages in thread
From: ramana at gcc dot gnu dot org @ 2009-12-11 11:54 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from ramana at gcc dot gnu dot org 2009-12-11 11:54 -------
Subject: Bug 41196
Author: ramana
Date: Fri Dec 11 11:53:46 2009
New Revision: 155158
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155158
Log:
Fix target/41196
2009-12-11 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/41196
2009-10-14 Daniel Gutson <dgutson@codesourcery.com>
* config/arm/neon.md (neon_vshll_n<mode>): Checking Bounds
fixed.
2009-12-11 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/41196
2009-10-14 Daniel Gutson <dgutson@codesourcery.com>
* testsuite/gcc.target/arm/neon/vfp-shift-a2t2.c: New test case.
Modified:
branches/gcc-4_4-branch/gcc/ChangeLog
branches/gcc-4_4-branch/gcc/config/arm/neon.md
branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only]
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (10 preceding siblings ...)
2009-12-11 11:54 ` ramana at gcc dot gnu dot org
@ 2009-12-11 11:55 ` ramana at gcc dot gnu dot org
2009-12-21 11:55 ` mikpe at it dot uu dot se
12 siblings, 0 replies; 14+ messages in thread
From: ramana at gcc dot gnu dot org @ 2009-12-11 11:55 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from ramana at gcc dot gnu dot org 2009-12-11 11:54 -------
Fixed.
--
ramana at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only]
2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
` (11 preceding siblings ...)
2009-12-11 11:55 ` ramana at gcc dot gnu dot org
@ 2009-12-21 11:55 ` mikpe at it dot uu dot se
12 siblings, 0 replies; 14+ messages in thread
From: mikpe at it dot uu dot se @ 2009-12-21 11:55 UTC (permalink / raw)
To: gcc-bugs
------- Comment #11 from mikpe at it dot uu dot se 2009-12-21 11:55 -------
(In reply to comment #10)
> Fixed.
You forgot to add the test case in the 4.4 backport.
--
mikpe at it dot uu dot se changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mikpe at it dot uu dot se
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41196
^ permalink raw reply [flat|nested] 14+ messages in thread
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2009-08-31 12:14 [Bug c/41196] New: The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code siarhei dot siamashka at gmail dot com
2009-09-01 11:13 ` [Bug c/41196] " ramana at gcc dot gnu dot org
2009-09-04 1:10 ` [Bug target/41196] " dgutson at codesourcery dot com
2009-09-04 19:41 ` dgutson at gcc dot gnu dot org
2009-09-25 21:29 ` dgutson at gcc dot gnu dot org
2009-09-25 21:35 ` dgutson at gcc dot gnu dot org
2009-10-14 19:20 ` dgutson at gcc dot gnu dot org
2009-10-15 8:19 ` [Bug target/41196] The use of ARM NEON vshll_n_u8 intrinsic results in compile error on valid code [4.4 only] ramana at gcc dot gnu dot org
2009-10-15 12:33 ` dgutson at codesourcery dot com
2009-10-15 12:58 ` ramana at gcc dot gnu dot org
2009-10-19 14:09 ` jakub at gcc dot gnu dot org
2009-12-11 11:54 ` ramana at gcc dot gnu dot org
2009-12-11 11:55 ` ramana at gcc dot gnu dot org
2009-12-21 11:55 ` mikpe at it dot uu dot se
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