[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

[Matthias Klose]

would it be possible to merge the gcc-5-branch into the ibm/gcc-5-branch
again?

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Title:
  [Ubuntu 16.04] Enable P9 toolchain

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[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

[Breno Leitão]

I am wondering how to proceed with this missing patch? Should we open a
new launchpad bug for this extra fix, or, could we reopen this feature
to have a new package released containing this fix?

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Title:
  [Ubuntu 16.04] Enable P9 toolchain

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[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

[Dimitri John Ledkov]

Hello,

As per
https://bugs.launchpad.net/ubuntu/+source/gcc-5/+bug/1522410/comments/9
the power9 cpu option is added in the gcc-5 (5.3.1-6ubuntu1) package.

Could you please upgrade to 5.3.1-6ubuntu1 first, and verify that that's
the version installed on disk, before validating this feature?

$ dpkg-query -W gcc-5
gcc-5   5.3.1-6ubuntu1

Regards,

Dimitri.

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Title:
  [Ubuntu 16.04] Enable P9 toolchain

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[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

[Launchpad Bug Tracker]

This bug was fixed in the package gcc-5 - 5.3.1-6ubuntu1

---
gcc-5 (5.3.1-6ubuntu1) xenial; urgency=medium

  * Add POWER9 support, taken from the ibm/gcc-5-branch. LP: #1522410.

gcc-5 (5.3.1-6) unstable; urgency=medium

  * Update to SVN 20160114 (r232387, 5.3.1) from the gcc-5-branch.
  * Build native gnat on sh4. Closes: #809498.
  * Relax libgcjjit-5-dev dependency on libgccjit0.
  * Apply proposed patch for PR target/69187 (armhf). LP: #1533101.
  * Update libgnatvsn/libgnatprj conflicts.
  * Update the Linaro support to the 5-2016.01 snapshot.
  * GCC Linaro: Revert commits causing regressions PR1980 and PR1982.

 -- Matthias Klose   Thu, 14 Jan 2016 22:01:58 +0100

** Changed in: gcc-5 (Ubuntu)
   Status: Triaged => Fix Released

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Title:
  [Ubuntu 16.04] Enable P9 toolchain

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[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

[Matthias Klose]

I see some regressions when building from the ibm branch:

@@ -26,14 +26,15 @@
 FAIL: g++.dg/opt/pr65554.C  -std=gnu++14 (test for excess errors)
 XPASS: g++.dg/tls/thread_local-order2.C  -std=c++11 execution test
 XPASS: g++.dg/tls/thread_local-order2.C  -std=c++14 execution test
+FAIL: c-c++-common/ubsan/float-cast-overflow-1.c   -O2  output pattern test
+FAIL: c-c++-common/ubsan/float-cast-overflow-2.c   -O0  output pattern test
+FAIL: c-c++-common/ubsan/float-cast-overflow-2.c   -O3 -g  output pattern test
 FAIL: c-c++-common/ubsan/float-cast-overflow-8.c   -O2  output pattern test
 FAIL: c-c++-common/ubsan/float-cast-overflow-8.c   -O2 -flto 
-fno-use-linker-plugin -flto-partition=none  output pattern test
 FAIL: c-c++-common/ubsan/float-cast-overflow-8.c   -O2 -flto 
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O0  output pattern test
-FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O1  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O2  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O2 -flto -fno-use-linker-plugin 
-flto-partition=none  output pattern test
-FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O2 -flto -fuse-linker-plugin 
-fno-fat-lto-objects  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O3 -fomit-frame-pointer  output 
pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O3 -fomit-frame-pointer 
-funroll-all-loops -finline-functions  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O3 -fomit-frame-pointer 
-funroll-loops  output pattern test

@@ -143,8 +143,8 @@
 FAIL: gcc.dg/tree-ssa/ivopts-lt-2.c scan-tree-dump-times ivopts "PHI" 1
 FAIL: gcc.dg/tree-ssa/ivopts-lt-2.c scan-tree-dump-times ivopts "p_[0-9]* <" 1
 FAIL: c-c++-common/ubsan/float-cast-overflow-2.c   -O0  output pattern test
-FAIL: c-c++-common/ubsan/float-cast-overflow-2.c   -O1  output pattern test
-FAIL: c-c++-common/ubsan/float-cast-overflow-2.c   -O2 -flto 
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
+FAIL: c-c++-common/ubsan/float-cast-overflow-2.c   -O2  output pattern test
+FAIL: c-c++-common/ubsan/float-cast-overflow-2.c   -Os  output pattern test
 FAIL: c-c++-common/ubsan/float-cast-overflow-8.c   -O2  output pattern test
 FAIL: c-c++-common/ubsan/float-cast-overflow-8.c   -O2 -flto 
-fno-use-linker-plugin -flto-partition=none  output pattern test
 FAIL: c-c++-common/ubsan/float-cast-overflow-8.c   -O2 -flto 
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
@@ -153,7 +153,6 @@
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O2  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O2 -flto -fno-use-linker-plugin 
-flto-partition=none  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O2 -flto -fuse-linker-plugin 
-fno-fat-lto-objects  output pattern test
-FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O3 -fomit-frame-pointer  output 
pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O3 -fomit-frame-pointer 
-funroll-all-loops -finline-functions  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O3 -fomit-frame-pointer 
-funroll-loops  output pattern test
 FAIL: c-c++-common/ubsan/overflow-mul-4.c   -O3 -g  output pattern test

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Title:
  [Ubuntu 16.04] Enable P9 toolchain

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[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

[Steve Langasek]

On Wed, Jan 13, 2016 at 08:10:43PM -, bugproxy wrote:
> The toolchain is made up of the important binutils, GCC and GLIBC
> packages.  Secondarily, you can add GDB to the list, but it's POWER9
> disassembler support is inherited from binutils.

> From my recollection, Ububtu 16.04 will use binutils 2.26, GCC 5.x and
> GLIBC 2.23 versions.  Binutils 2.26 contains full POWER9 support, so no
> patches are required for that.  GLIBC 2.23 currently has all of the POWER9
> support we'll be able to deliver in time for 16.04, so no patches are
> required for that either.  The only package that requires backports if GCC
> and those are already available in out IBM GCC 5 branch which Canonical is
> already pulling from.  We are only missing which patches from that branch
> has Canonical pulled and which haven't.  Maybe they have pulled them all?

As far as I'm aware, we are not currently pulling any gcc patches directly
from IBM, but only using the code that is included in the upstream gcc-5
branch.  Can you please point us at the revision on the IBM gcc-5 branch
that contains the necessary P9 support, so we can evaluate this for
inclusion?


** Package changed: ubuntu => gcc-5 (Ubuntu)

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Title:
  [Ubuntu 16.04] Enable P9 toolchain

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[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

[Steve Langasek]

** Changed in: gcc-5 (Ubuntu)
   Status: Incomplete => Triaged

** Changed in: gcc-5 (Ubuntu)
 Assignee: Taco Screen team (taco-screen-team) => Matthias Klose (doko)

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  [Ubuntu 16.04] Enable P9 toolchain

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[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

[Steve Langasek]

This bug is currently not actionable.  No information about which
packages require updates to support POWER9, or upstream
revisions/commits where this support is available, or when these will be
released.

Marking incomplete for now.

** Changed in: ubuntu
   Status: New => Incomplete

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Title:
  [Ubuntu 16.04] Enable P9 toolchain

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[Bug 1522410] Re: [Ubuntu 16.04] Enable P9 toolchain

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