[Bug rtl-optimization/25677] [4.2 regression] testsuite failure:gcc.c-torture/execute/960802-1.c -O1 and -O2

[bonzini at gnu dot org]

--- Comment #7 from bonzini at gnu dot org  2006-01-16 18:21 ---
Patch committed


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bonzini at gnu dot org changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution||FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25677

[Bug rtl-optimization/25677] [4.2 regression] testsuite failure:gcc.c-torture/execute/960802-1.c -O1 and -O2

[hp at gcc dot gnu dot org]

--- Comment #6 from hp at gcc dot gnu dot org  2006-01-07 00:02 ---
I built and checked cross from i686-pc-linux-gnu to cris-axis-linux-gnu with
this
patch, and built CSiBE-2.1.1 at -O0, -O1, -O2 (note 1) and -O3 compile-time
tests and -Os compile-time and size tests, with just the two expected
differences in the generated code (using the previously posted unrandomization
and asm-wrapper patches).
Thanks!

(note 1: fails to compile -O2: invalid assembly code is generated for
linux-2.4.23-pre3-testplatform/net/ipv4/tcp_input.c at -O2 with and without
the patch due to a different bug)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25677

[Bug rtl-optimization/25677] [4.2 regression] testsuite failure:gcc.c-torture/execute/960802-1.c -O1 and -O2

[hp at gcc dot gnu dot org]

--- Comment #1 from hp at gcc dot gnu dot org  2006-01-05 15:08 ---
It's still there LAST_UPDATED Thu Jan  5 03:26:35 UTC 2006 (revision
109371M),
so I unassign myself, at least temporarily.
Bonzini, a comment?


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hp at gcc dot gnu dot org changed:

   What|Removed |Added

 CC||bonzini at gnu dot org
 AssignedTo|hp at gcc dot gnu dot org   |unassigned at gcc dot gnu
   ||dot org
 Status|UNCONFIRMED |NEW
 Ever Confirmed|0   |1
   Last reconfirmed|-00-00 00:00:00 |2006-01-05 15:08:50
   date||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25677

[Bug rtl-optimization/25677] [4.2 regression] testsuite failure:gcc.c-torture/execute/960802-1.c -O1 and -O2

[bonzini at gnu dot org]

--- Comment #2 from bonzini at gnu dot org  2006-01-05 15:10 ---
If it's still there, assign it to me.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25677

[Bug rtl-optimization/25677] [4.2 regression] testsuite failure:gcc.c-torture/execute/960802-1.c -O1 and -O2

[hp at gcc dot gnu dot org]

--- Comment #3 from hp at gcc dot gnu dot org  2006-01-05 15:51 ---
As offered in comment #2. Thanks!


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hp at gcc dot gnu dot org changed:

   What|Removed |Added

 AssignedTo|unassigned at gcc dot gnu   |bonzini at gnu dot org
   |dot org |
 Status|NEW |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25677

[Bug rtl-optimization/25677] [4.2 regression] testsuite failure:gcc.c-torture/execute/960802-1.c -O1 and -O2

[bonzini at gnu dot org]

--- Comment #4 from bonzini at gnu dot org  2006-01-05 16:59 ---
Combine does not try to combine across a call.  But it does not invalidate
equivalences and, in this case, it tries to replace v (the result of a function
call) with the return value register... even though in the meanwhile a
different function call has clobbered it.

H-P can you please run an assembly language comparison on this patch, to check
that it does not pessimize anything?

I think the bug is latent in other branches as well.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25677

[Bug rtl-optimization/25677] [4.2 regression] testsuite failure:gcc.c-torture/execute/960802-1.c -O1 and -O2

[bonzini at gnu dot org]

--- Comment #5 from bonzini at gnu dot org  2006-01-05 16:59 ---
Created an attachment (id=10585)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10585action=view)
patch to try


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25677

[Bug rtl-optimization/25677] [4.2 regression] testsuite failure:gcc.c-torture/execute/960802-1.c -O1 and -O2

[pinskia at gcc dot gnu dot org]

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pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 CC||pinskia at gcc dot gnu dot
   ||org
   Target Milestone|--- |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25677