--- Comment #10 from hjl at gcc dot gnu dot org 2009-01-30 17:32 ---
Subject: Bug 38748
Author: hjl
Date: Fri Jan 30 17:31:24 2009
New Revision: 143798
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=143798
Log:
2009-01-30 H.J. Lu hongjiu...@intel.com
2009-01-27
--- Comment #8 from rguenth at gcc dot gnu dot org 2009-01-20 17:10 ---
Subject: Bug 38748
Author: rguenth
Date: Tue Jan 20 17:10:40 2009
New Revision: 143523
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=143523
Log:
2009-01-20 Andrew Pinski andrew_pin...@playstation.sony.com
--- Comment #9 from rguenth at gcc dot gnu dot org 2009-01-20 17:11 ---
Fixed.
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
Status|ASSIGNED
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38748
--- Comment #6 from pinskia at gcc dot gnu dot org 2009-01-15 23:16 ---
The CSE of the load is only valid at -O2 and above (strict aliasing turned on).
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38748
--- Comment #7 from pinskia at gcc dot gnu dot org 2009-01-15 23:30 ---
PR 38747 has the best patch which allows most optimizations still but only
disabling it for the invalid cases when the aliasing sets are not equal.
Take:
struct S { unsigned f; };
int __attribute__((noinline))
foo (
--- Comment #5 from rguenther at suse dot de 2009-01-13 08:55 ---
Subject: Re: [4.4 Regression] Missed FRE because
of VIEW_CONVERT_EXPR
On Tue, 13 Jan 2009, pinskia at gcc dot gnu dot org wrote:
--- Comment #4 from pinskia at gcc dot gnu dot org 2009-01-13 01:09
---
We
--- Comment #4 from pinskia at gcc dot gnu dot org 2009-01-13 01:09 ---
We should be able to fold:
VIEW_CONVERT_EXPRconst struct Loc(D.919509.D.78313.D.78008)
Into just D.919509 .
The indirect issue is a different one which needs to be fixed anyways as it
causes aliasing issues which
--- Comment #2 from rguenth at gcc dot gnu dot org 2009-01-11 14:29 ---
This hits tramp3d a lot, we end up with
D.919534 = VIEW_CONVERT_EXPRconst struct
Loc(D.919509.D.78313.D.78008).D.78313.D.78008.domain_m[0].D.77181.D.47055.D.46936.domain_m;
vs. D.919509.D.78313.D.78008...
the
--- Comment #3 from rguenth at gcc dot gnu dot org 2009-01-11 14:41 ---
I can even see things like
SR.20836 = VIEW_CONVERT_EXPRconst struct Interval(VIEW_CONVERT_EXPRconst
struct
--- Comment #1 from rguenth at gcc dot gnu dot org 2009-01-06 21:33 ---
Related to PR38747.
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
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