[Bug tree-optimization/64026] New: Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic

[Bug tree-optimization/64026] New: Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64026

            Bug ID: 64026
           Summary: Many FAIL: ... scan-tree-dump-times vect "Vectorizing
                    an unaligned access" 0 with -fpic
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ubizjak at gmail dot com

This is a recent regression. Comparing versions 5.0.0 20141120 (experimental)
[trunk revision 217836] [1] with 5.0.0 20141122 (experimental) [trunk revision
217961] [2], there are many vectorizer scan failures (using -fpic)

scan-tree-dump-times vect "Alignment of access forced using peeling"

and

scan-tree-dump-times vect "Vectorizing an unaligned access"

[1] https://gcc.gnu.org/ml/gcc-testresults/2014-11/msg02192.html
[1] https://gcc.gnu.org/ml/gcc-testresults/2014-11/msg02442.html

[Bug tree-optimization/64026] Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64026

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |i686-linux-gnu
                 CC|                            |hjl.tools at gmail dot com

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
HJ, is it possible to run a regression hunt between these two revisions?
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Subject: [Bug target/64027] New: inefficient handling of msp430 byte operands
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idd027

            Bug ID: 64027
           Summary: inefficient handling of msp430 byte operands
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pab at pabigot dot com

[Bug tree-optimization/64026] Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64026

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #1)
> HJ, is it possible to run a regression hunt between these two revisions?

Is this

FAIL: gcc.dg/vect/vect-simd-clone-6.c (internal compiler error)
FAIL: gcc.dg/vect/vect-simd-clone-6.c (test for excess errors)
FAIL: gcc.dg/vect/vect-simd-clone-6.c -flto -ffat-lto-objects (internal
compiler
 error)
FAIL: gcc.dg/vect/vect-simd-clone-6.c -flto -ffat-lto-objects (test for excess
e
rrors)

new?
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Subject: [Bug tree-optimization/64026] Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64026

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #2)

> Is this
> 
> FAIL: gcc.dg/vect/vect-simd-clone-6.c (internal compiler error)
> FAIL: gcc.dg/vect/vect-simd-clone-6.c (test for excess errors)
> FAIL: gcc.dg/vect/vect-simd-clone-6.c -flto -ffat-lto-objects (internal
> compiler
>  error)
> FAIL: gcc.dg/vect/vect-simd-clone-6.c -flto -ffat-lto-objects (test for
> excess e
> rrors)
> 
> new?

I don't know, but I have reported this in a separate PR64024.
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Subject: [Bug tree-optimization/60770] disappearing clobbers
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id`770

Marc Glisse <glisse at gcc dot gnu.org> changed:

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

--- Comment #12 from Marc Glisse <glisse at gcc dot gnu.org> ---
Clobbers are now properly preserved in this case. We don't warn yet, but that's
PR 60517.

[Bug tree-optimization/64026] Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64026

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
I opened PR 64028.

[Bug tree-optimization/64026] [5 Rehression] Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64026

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-11-22
   Target Milestone|---                         |5.0
            Summary|Many FAIL: ...              |[5 Rehression] Many FAIL:
                   |scan-tree-dump-times vect   |... scan-tree-dump-times
                   |"Vectorizing an unaligned   |vect "Vectorizing an
                   |access" 0 with -fpic        |unaligned access" 0 with
                   |                            |-fpic
     Ever confirmed|0                           |1

[Bug tree-optimization/64026] [5 Regression] Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64026

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
So is this one now a dup of PR64028??

[Bug tree-optimization/64026] [5 Regression] Many FAIL: ... scan-tree-dump-times vect "Vectorizing an unaligned access" 0 with -fpic

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64026

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #5)
> So is this one now a dup of PR64028??

Looks so, let's move to PR64028 which points to offending commit.

*** This bug has been marked as a duplicate of bug 64028 ***
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Subject: [Bug middle-end/64028] [5 Regression] r211599 caused many vectorizer test failures with -fPIC
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64028

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ubizjak at gmail dot com

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
*** Bug 64026 has been marked as a duplicate of this bug. ***
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id`102

--- Comment #21 from Rohit <rohitarulraj at gmail dot com> ---
(In reply to Francois-Xavier Coudert from comment #20)
> The commits from comments #16 and #17 broke the compiler (and bootstrap) on
> powerpc-apple-darwin9: https://gcc.gnu.org/bugzilla/show_bug.cgi?idc703

Sorry. The "REGISTER_NAMES" macro that was updated in "rs6000.h" file gets
redefined in "darwin.h" file. I can provide the required patch, but I don't
have a darwin machine to test the changes.