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* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
@ 2014-01-27  7:50 ` jakub at gcc dot gnu.org
  2014-01-27  9:00 ` thiago at kde dot org
                   ` (21 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-01-27  7:50 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-27
                 CC|                            |hjl.tools at gmail dot com,
                   |                            |jakub at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
PTA_HLE is IMHO fine, after all we enable it also for -mtune=generic.  But I
agree that enabling PTA_RTM when less than 50% of current Haswell CPUs don't
include RTM is a bad idea.  Not even say i7-4770K includes it.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
  2014-01-27  7:50 ` [Bug target/59952] -march=core-avx2 should not enable RTM jakub at gcc dot gnu.org
@ 2014-01-27  9:00 ` thiago at kde dot org
  2014-01-27  9:23 ` mikpelinux at gmail dot com
                   ` (20 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: thiago at kde dot org @ 2014-01-27  9:00 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #2 from Thiago Macieira <thiago at kde dot org> ---
The Ks and the Rs don't have it. The plain 4770 as well as 4770S do have it. I
guess we were too eager with TSX when the announcement came out 2 years ago: it
sounded like all Haswell would have it.

I don't see a #define for HLE, so that's probably fine to leave XACQUIRE and
XRELEASE generation enabled, though. Just make sure there are no uses of the
XTEST instruction unless RTM is also enabled or the CPU check was performed.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
  2014-01-27  7:50 ` [Bug target/59952] -march=core-avx2 should not enable RTM jakub at gcc dot gnu.org
  2014-01-27  9:00 ` thiago at kde dot org
@ 2014-01-27  9:23 ` mikpelinux at gmail dot com
  2014-01-27 15:11 ` thiago at kde dot org
                   ` (19 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: mikpelinux at gmail dot com @ 2014-01-27  9:23 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #3 from Mikael Pettersson <mikpelinux at gmail dot com> ---
There are also Haswells that lack BMI2.  I updated our dynamic binary
instrumentation engine for AVX2 about a year ago, but while our Haswell box at
the time had AVX2 it didn't have BMI2 etc, causing Intel's MKL to refuse to
enter it AVX2 code paths.  So testing had to be limited to small assembly-coded
kernels.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (2 preceding siblings ...)
  2014-01-27  9:23 ` mikpelinux at gmail dot com
@ 2014-01-27 15:11 ` thiago at kde dot org
  2014-01-27 18:21 ` mikpelinux at gmail dot com
                   ` (18 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: thiago at kde dot org @ 2014-01-27 15:11 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #4 from Thiago Macieira <thiago at kde dot org> ---
(In reply to Mikael Pettersson from comment #3)
> There are also Haswells that lack BMI2.  I updated our dynamic binary
> instrumentation engine for AVX2 about a year ago, but while our Haswell box
> at the time had AVX2 it didn't have BMI2 etc, causing Intel's MKL to refuse
> to enter it AVX2 code paths.  So testing had to be limited to small
> assembly-coded kernels.

Are you sure? Unfortunately, ark.intel.com does not list BMI instruction level.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (3 preceding siblings ...)
  2014-01-27 15:11 ` thiago at kde dot org
@ 2014-01-27 18:21 ` mikpelinux at gmail dot com
  2014-01-27 18:27 ` jakub at gcc dot gnu.org
                   ` (17 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: mikpelinux at gmail dot com @ 2014-01-27 18:21 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #5 from Mikael Pettersson <mikpelinux at gmail dot com> ---
(In reply to Thiago Macieira from comment #4)
> (In reply to Mikael Pettersson from comment #3)
> > There are also Haswells that lack BMI2.  I updated our dynamic binary
> > instrumentation engine for AVX2 about a year ago, but while our Haswell box
> > at the time had AVX2 it didn't have BMI2 etc, causing Intel's MKL to refuse
> > to enter it AVX2 code paths.  So testing had to be limited to small
> > assembly-coded kernels.
> 
> Are you sure? Unfortunately, ark.intel.com does not list BMI instruction
> level.

Yes I'm sure.  According to my notes the processor was a 2.0 GHz 4c/8t
i7-4765T.  It may have been an engineering sample, this was at my previous job
and I can't access the machine any more.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (4 preceding siblings ...)
  2014-01-27 18:21 ` mikpelinux at gmail dot com
@ 2014-01-27 18:27 ` jakub at gcc dot gnu.org
  2014-01-27 18:38 ` thiago at kde dot org
                   ` (16 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-01-27 18:27 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Prerelease samples shouldn't count, people using those just can avoid using
-march=haswell and use -march=ivybridge -mavx2 or similar instead.  Can anyone
from Intel verify if all released Haswell CPUs have BMI2 (and if there aren't
plans to ship Haswell CPUs without BMI2)?


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (5 preceding siblings ...)
  2014-01-27 18:27 ` jakub at gcc dot gnu.org
@ 2014-01-27 18:38 ` thiago at kde dot org
  2014-01-27 18:54 ` thiago at kde dot org
                   ` (15 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: thiago at kde dot org @ 2014-01-27 18:38 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #7 from Thiago Macieira <thiago at kde dot org> ---
(In reply to Jakub Jelinek from comment #6)
> Prerelease samples shouldn't count, people using those just can avoid using
> -march=haswell and use -march=ivybridge -mavx2 or similar instead.  Can
> anyone from Intel verify if all released Haswell CPUs have BMI2 (and if
> there aren't plans to ship Haswell CPUs without BMI2)?

Trying to get that confirmed internally.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (6 preceding siblings ...)
  2014-01-27 18:38 ` thiago at kde dot org
@ 2014-01-27 18:54 ` thiago at kde dot org
  2014-01-27 19:11 ` kirill.yukhin at intel dot com
                   ` (14 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: thiago at kde dot org @ 2014-01-27 18:54 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #8 from Thiago Macieira <thiago at kde dot org> ---
(In reply to Thiago Macieira from comment #7)
> (In reply to Jakub Jelinek from comment #6)
> > Prerelease samples shouldn't count, people using those just can avoid using
> > -march=haswell and use -march=ivybridge -mavx2 or similar instead.  Can
> > anyone from Intel verify if all released Haswell CPUs have BMI2 (and if
> > there aren't plans to ship Haswell CPUs without BMI2)?
> 
> Trying to get that confirmed internally.

First info is that the i3-4000 series has BMI2:

 Family: Core i3
 Version: Intel(R) Core(TM) i3-4010U CPU @ 1.70GHz
 flags    :  .... fsgsbase bmi1 avx2 smep bmi2 erms invpcid

The other information that I can give you is that compiling code with ICC 14
with -march=core-avx2 does generate SHRX, SARX, SHLX instructions. It has no
#define for either BMI1 or 2, though.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (7 preceding siblings ...)
  2014-01-27 18:54 ` thiago at kde dot org
@ 2014-01-27 19:11 ` kirill.yukhin at intel dot com
  2014-01-27 19:53 ` thiago at kde dot org
                   ` (13 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: kirill.yukhin at intel dot com @ 2014-01-27 19:11 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #9 from Yukhin Kirill <kirill.yukhin at intel dot com> ---
(In reply to Jakub Jelinek from comment #6)
> Prerelease samples shouldn't count, people using those just can avoid using
> -march=haswell and use -march=ivybridge -mavx2 or similar instead.  Can
> anyone from Intel verify if all released Haswell CPUs have BMI2 (and if
> there aren't plans to ship Haswell CPUs without BMI2)?

I am checking and will get back to. I though all AVX2 parts had BMI1/2


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (8 preceding siblings ...)
  2014-01-27 19:11 ` kirill.yukhin at intel dot com
@ 2014-01-27 19:53 ` thiago at kde dot org
  2014-01-31 14:01 ` kirill.yukhin at intel dot com
                   ` (12 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: thiago at kde dot org @ 2014-01-27 19:53 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #10 from Thiago Macieira <thiago at kde dot org> ---
(In reply to Yukhin Kirill from comment #9)
> I am checking and will get back to. I though all AVX2 parts had BMI1/2

The evidence seems to support that. I did check with a few colleagues and we
couldn't come up with a case that didn't.

We found Haswell-based Celerons that don't have them, but those don't have AVX2
either -- they don't qualify for either part of "core-avx2".


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (9 preceding siblings ...)
  2014-01-27 19:53 ` thiago at kde dot org
@ 2014-01-31 14:01 ` kirill.yukhin at intel dot com
  2014-05-08  5:17 ` thiago at kde dot org
                   ` (11 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: kirill.yukhin at intel dot com @ 2014-01-31 14:01 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #11 from Yukhin Kirill <kirill.yukhin at intel dot com> ---
(In reply to Yukhin Kirill from comment #9)
> (In reply to Jakub Jelinek from comment #6)
> > Prerelease samples shouldn't count, people using those just can avoid using
> > -march=haswell and use -march=ivybridge -mavx2 or similar instead.  Can
> > anyone from Intel verify if all released Haswell CPUs have BMI2 (and if
> > there aren't plans to ship Haswell CPUs without BMI2)?
> 
> I am checking and will get back to. I though all AVX2 parts had BMI1/2

AVX2 must imply BMI. AVX2 w/ BMI disabled are not-for-sale SKUs.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (10 preceding siblings ...)
  2014-01-31 14:01 ` kirill.yukhin at intel dot com
@ 2014-05-08  5:17 ` thiago at kde dot org
  2014-05-08 16:29 ` ubizjak at gmail dot com
                   ` (10 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: thiago at kde dot org @ 2014-05-08  5:17 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #12 from Thiago Macieira <thiago at kde dot org> ---
GCC 4.9.0 got released with -march=haswell still enabling RTM and HLE, even
though there are Haswell parts without TSX.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (11 preceding siblings ...)
  2014-05-08  5:17 ` thiago at kde dot org
@ 2014-05-08 16:29 ` ubizjak at gmail dot com
  2014-05-08 16:57 ` hjl.tools at gmail dot com
                   ` (9 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: ubizjak at gmail dot com @ 2014-05-08 16:29 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |ubizjak at gmail dot com
   Target Milestone|---                         |4.8.3

--- Comment #13 from Uroš Bizjak <ubizjak at gmail dot com> ---
Patch:

--cut here--
Index: config/i386/i386.c
===================================================================
--- config/i386/i386.c  (revision 210219)
+++ config/i386/i386.c  (working copy)
@@ -3130,7 +3130,7 @@
   (PTA_SANDYBRIDGE | PTA_FSGSBASE | PTA_RDRND | PTA_F16C)
 #define PTA_HASWELL \
   (PTA_IVYBRIDGE | PTA_AVX2 | PTA_BMI | PTA_BMI2 | PTA_LZCNT \
-   | PTA_FMA | PTA_MOVBE | PTA_RTM | PTA_HLE)
+   | PTA_FMA | PTA_MOVBE | PTA_HLE)
 #define PTA_BROADWELL \
   (PTA_HASWELL | PTA_ADX | PTA_PRFCHW | PTA_RDSEED)
 #define PTA_BONNELL \
--cut here--
>From gcc-bugs-return-451009-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 08 16:45:31 2014
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Subject: [Bug target/58066] GCC mis-compiles access to TLS variable with -fPIC on x86_64
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX066

--- Comment #6 from wmi at gcc dot gnu.org ---
Author: wmi
Date: Thu May  8 16:44:52 2014
New Revision: 210222

URL: http://gcc.gnu.org/viewcvs?rev!0222&root=gcc&view=rev
Log:
gcc/
2014-05-08  Wei Mi  <wmi@google.com>

    PR target/58066
    * config/i386/i386.c (ix86_compute_frame_layout):
    Update preferred_stack_boundary for call, expanded from
    tls descriptor.
    * config/i386/i386.md:
    (*tls_global_dynamic_32_gnu): Update RTX to depend on
    SP register.
    (*tls_local_dynamic_base_32_gnu): Ditto.
    (*tls_local_dynamic_32_once): Ditto.
    (tls_global_dynamic_64_<mode>): Set
    ix86_tls_descriptor_calls_expanded_in_cfun.
    (tls_local_dynamic_base_64_<mode>): Ditto.
    (tls_global_dynamic_32): Set
    ix86_tls_descriptor_calls_expanded_in_cfun. Update RTX
    to depend on SP register.
    (tls_local_dynamic_base_32): Ditto.

gcc/testsuite/
2014-05-08  Wei Mi  <wmi@google.com>

    PR target/58066
    * gcc.target/i386/pr58066.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr58066.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/i386/i386.md
    trunk/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (12 preceding siblings ...)
  2014-05-08 16:29 ` ubizjak at gmail dot com
@ 2014-05-08 16:57 ` hjl.tools at gmail dot com
  2014-05-08 17:11 ` ubizjak at gmail dot com
                   ` (8 subsequent siblings)
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From: hjl.tools at gmail dot com @ 2014-05-08 16:57 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #13)
> Patch:
> 
> --cut here--
> Index: config/i386/i386.c
> ===================================================================
> --- config/i386/i386.c  (revision 210219)
> +++ config/i386/i386.c  (working copy)
> @@ -3130,7 +3130,7 @@
>    (PTA_SANDYBRIDGE | PTA_FSGSBASE | PTA_RDRND | PTA_F16C)
>  #define PTA_HASWELL \
>    (PTA_IVYBRIDGE | PTA_AVX2 | PTA_BMI | PTA_BMI2 | PTA_LZCNT \
> -   | PTA_FMA | PTA_MOVBE | PTA_RTM | PTA_HLE)
> +   | PTA_FMA | PTA_MOVBE | PTA_HLE)
>  #define PTA_BROADWELL \
>    (PTA_HASWELL | PTA_ADX | PTA_PRFCHW | PTA_RDSEED)
>  #define PTA_BONNELL \
> --cut here--

I think HLE is the part of TSX.
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Subject: [Bug target/59952] -march=core-avx2 should not enable RTM
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idY952

--- Comment #15 from Thiago Macieira <thiago at kde dot org> ---
(In reply to H.J. Lu from comment #14)
> I think HLE is the part of TSX.

It is and should be removed from the list.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
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                   ` (13 preceding siblings ...)
  2014-05-08 16:57 ` hjl.tools at gmail dot com
@ 2014-05-08 17:11 ` ubizjak at gmail dot com
  2014-05-08 17:18 ` jakub at gcc dot gnu.org
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #16 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Thiago Macieira from comment #15)
> (In reply to H.J. Lu from comment #14)
> > I think HLE is the part of TSX.
> 
> It is and should be removed from the list.

OK.
>From gcc-bugs-return-451016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 08 17:17:01 2014
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From: "maxime.boissonneault at calculquebec dot ca" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/61101] snprintf not part of std
Date: Thu, 08 May 2014 17:17:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?ida101

--- Comment #19 from Maxime Boissonneault <maxime.boissonneault at calculquebec dot ca> ---
Hi again,
I notice in the first line that leads to an error of bits/c++config.h not found
:

/software6/src/gcc-4.8.2-build/./gcc/xgcc -shared-libgcc
-B/software6/src/gcc-4.8.2-build/./gcc -nostdinc++
-L/software6/src/gcc-4.8.2-build/x86_64-unknown-linux-gnu/libstdc++-v3/src
-L/software6/src/gcc-4.8.2-build/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/software6/compilers/gcc/4.8.2/x86_64-unknown-linux-gnu/bin/
-B/software6/compilers/gcc/4.8.2/x86_64-unknown-linux-gnu/lib/ -isystem
/software6/compilers/gcc/4.8.2/x86_64-unknown-linux-gnu/include -isystem
/software6/compilers/gcc/4.8.2/x86_64-unknown-linux-gnu/sys-include    -c -O2
-march=native -pipe -Wall -D_GNU_SOURCE -std=c++98 -fno-exceptions
conftest.cpp

I see that
/software6/compilers/gcc/4.8.2/include/c++/4.8.2/x86_64-unknown-linux-gnu/
is not listed in the -isystem. Shouldn't it be there ? This is where the
bits/c++config.h should be found. On the other hand, a couple of paths are
given as -isystem argument that do not exist :
/software6/compilers/gcc/4.8.2/x86_64-unknown-linux-gnu/include
/software6/compilers/gcc/4.8.2/x86_64-unknown-linux-gnu/sys-include

Those folders do not exist.


^ permalink raw reply	[flat|nested] 23+ messages in thread
* [Bug target/59952] -march=core-avx2 should not enable RTM
       [not found] <bug-59952-4@http.gcc.gnu.org/bugzilla/>
                   ` (14 preceding siblings ...)
  2014-05-08 17:11 ` ubizjak at gmail dot com
@ 2014-05-08 17:18 ` jakub at gcc dot gnu.org
  2014-05-08 17:20 ` ubizjak at gmail dot com
                   ` (6 subsequent siblings)
  22 siblings, 0 replies; 23+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-05-08 17:18 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'm not sure about that, after all we enable PTA_HLE even for generic.
The point is whether it might be beneficial to emit the HLE prefixes or not, on
CPUs that never have HLE obviously it doesn't make sense, on CPUs that
sometimes or always have it it makes sense.


^ permalink raw reply	[flat|nested] 23+ messages in thread
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                   ` (15 preceding siblings ...)
  2014-05-08 17:18 ` jakub at gcc dot gnu.org
@ 2014-05-08 17:20 ` ubizjak at gmail dot com
  2014-05-08 18:06 ` thiago at kde dot org
                   ` (5 subsequent siblings)
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From: ubizjak at gmail dot com @ 2014-05-08 17:20 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #18 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Jakub Jelinek from comment #17)
> I'm not sure about that, after all we enable PTA_HLE even for generic.
> The point is whether it might be beneficial to emit the HLE prefixes or not,
> on CPUs that never have HLE obviously it doesn't make sense, on CPUs that
> sometimes or always have it it makes sense.

Ah, you are right. PTA_HLE is benign. It is emitted as a prefix, and is ignored
on non-HLE CPUs.
>From gcc-bugs-return-451021-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 08 17:23:40 2014
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Subject: [Bug c++/13868] Conditional expression operator and implicit char array conversion
Date: Thu, 08 May 2014 17:23:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id\x13868

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jason at gcc dot gnu.org
         Resolution|---                         |FIXED
   Target Milestone|---                         |4.7.0
      Known to fail|                            |

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
This works with GCC 4.7 and above.


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                   ` (16 preceding siblings ...)
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #19 from Thiago Macieira <thiago at kde dot org> ---
The prefix can be emitted for any CPU, you don't need a flag for that. However,
you cannot emit the XTEST instruction unless the CPU has HLE or RTM.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #20 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Thiago Macieira from comment #19)
> The prefix can be emitted for any CPU, you don't need a flag for that.
> However, you cannot emit the XTEST instruction unless the CPU has HLE or RTM.

Please read Comment 17.
>From gcc-bugs-return-451036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 08 19:03:04 2014
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Subject: [Bug target/61092] [4.10 Regression]: wide-int merge broke alpha bootstrap
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--- Comment #9 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu May  8 19:02:28 2014
New Revision: 210233

URL: http://gcc.gnu.org/viewcvs?rev!0233&root=gcc&view=rev
Log:
    PR target/61092
    * config/alpha/alpha.c: Include gimple-iterator.h.
    (alpha_gimple_fold_builtin): New function.  Move
    ALPHA_BUILTIN_UMULH folding from ...
    (alpha_fold_builtin): ... here.
    (TARGET_GIMPLE_FOLD_BUILTIN): New define.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/alpha/alpha.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #21 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu May  8 19:13:10 2014
New Revision: 210234

URL: http://gcc.gnu.org/viewcvs?rev=210234&root=gcc&view=rev
Log:
    PR target/59952
    * config/i386/i386.c (PTA_HASWELL): Remove PTA_RTM.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c


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  2014-05-08 19:34 ` ubizjak at gmail dot com
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From: uros at gcc dot gnu.org @ 2014-05-08 19:24 UTC (permalink / raw)
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #22 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu May  8 19:23:45 2014
New Revision: 210236

URL: http://gcc.gnu.org/viewcvs?rev=210236&root=gcc&view=rev
Log:
    PR target/59952
    * config/i386/i386.c (PTA_HASWELL): Remove PTA_RTM.


Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/config/i386/i386.c


^ permalink raw reply	[flat|nested] 23+ messages in thread
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From: uros at gcc dot gnu.org @ 2014-05-08 19:33 UTC (permalink / raw)
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #23 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu May  8 19:32:34 2014
New Revision: 210237

URL: http://gcc.gnu.org/viewcvs?rev=210237&root=gcc&view=rev
Log:
    PR target/59952
    * config/i386/i386.c (ix86_option_override_internal): Remove PTA_RTM
    from core-avx2.


Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/config/i386/i386.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #24 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed everywhere.
>From gcc-bugs-return-451044-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 08 19:41:27 2014
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Subject: [Bug tree-optimization/61009] Incorrect jump threading in dom
Date: Thu, 08 May 2014 19:41:00 -0000
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--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
Sorry, personal issue taking an enormous amount of my time right now.  I have a
fully tested patch and just need to twiddle the attached test into an
executable testcase for the regression suite.


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2014-01-27  7:50 ` [Bug target/59952] -march=core-avx2 should not enable RTM jakub at gcc dot gnu.org
2014-01-27  9:00 ` thiago at kde dot org
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