[Bug target/63174] New: ~!~F|BA:> watch USA vs UKRAINE Live Streaming Online Fr33

[Bug target/63174] New: ~!~F|BA:> watch USA vs UKRAINE Live Streaming Online Fr33

[taehmo at yandex dot com]

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63174

            Bug ID: 63174
           Summary: ~!~F|BA:> watch USA vs UKRAINE Live Streaming Online
                    Fr33
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: taehmo at yandex dot com

USA vs Ukraine live stream USA vs. Ukraine: TV Info, Live Stream and Preview
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World Cup before the knockout stages, and Ukraine 

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Team USA only has one more group game remaining at the 2014 FIBA World Cup
before the knockout stages, and Ukraine is the opponent it gets to blow out
this time around.

If you are a Ukraine supporter, it should absolutely worry you that your team
lost to the team the Americans dismantled 114-55. Sure, two games is a small
sample size, but that difference virtually tells the entire story when it comes
to comparing the talent level of the United States and Ukraine in this matchup.

It is worth pointing out that this contest means far more for Ukraine than the
United States.

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>From gcc-bugs-return-461236-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Sep 04 16:50:43 2014
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Subject: [Bug regression/63175] New: [4.9/5 regression] FAIL: gcc.dg/vect/costmodel/ppc/costmodel-bb-slp-9a.c scan-tree-dump-times slp2" basic block vectorized using SLP" 1
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idc175

            Bug ID: 63175
           Summary: [4.9/5 regression] FAIL:
                    gcc.dg/vect/costmodel/ppc/costmodel-bb-slp-9a.c
                    scan-tree-dump-times slp2" basic block vectorized
                    using SLP" 1
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
          Assignee: unassigned at gcc dot gnu.org
          Reporter: macro@linux-mips.org
              Host: i686-linux-gnu
            Target: powerpc-linux-gnu

I see this failure in Power/Linux testing with 4.9.1 and also trunk
(5.0), so presumably the regression happened sometime between 4.8 and
4.9:

FAIL: gcc.dg/vect/costmodel/ppc/costmodel-bb-slp-9a.c scan-tree-dump-times
slp2" basic block vectorized using SLP" 1

This test passed with 4.8.  This is with powerpc-linux-gnu.

Looking at the generated assembly the quality of code has indeed
regressed, copying between `pin' and `pout' in `main1' is no longer
optimised away.

This happens for AltiVec multilibs only, seen with:

-mcpu`3e
-mcpu`3e -msoft-float
-mcput00 -maltivec -mabi=altivec
-mcpuæ500 -maltivec -mabi=altivec
-mcpuæ500 -m64 -maltivec -mabi=altivec

option selections here.

Options used to configure the compiler:

--build=i686-pc-linux-gnu
--target=powerpc-linux-gnu
--with-cpu-32`3e
--with-cpu-64å500
--with-long-double-128