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Re: New GCC takes 19x as long to compile my program (compared to old GCC), plus void** patch suggestion
- From: Richard Guenther <richard dot guenther at gmail dot com>
- To: Andi Kleen <andi at firstfloor dot org>
- Cc: Elmar Krieger <elmar at cmbi dot ru dot nl>, gcc at gcc dot gnu dot org
- Date: Thu, 9 Aug 2012 10:20:57 +0200
- Subject: Re: New GCC takes 19x as long to compile my program (compared to old GCC), plus void** patch suggestion
- References: <5022714F.email@example.com> <firstname.lastname@example.org>
On Thu, Aug 9, 2012 at 1:09 AM, Andi Kleen <email@example.com> wrote:
> Elmar Krieger <firstname.lastname@example.org> writes:
>> The slowdown is not the same with other files, so I'm essentially sure
>> that this specific source file has some 'feature' that catches GCC at
>> the wrong leg. This raises my hopes that one of the GCC experts wants
>> to take a look at it. The code is confidential,
> You could file a bug report with just a profile output of the compiler
> (e.g. from oprofile or perf)
But please use a pristine FSF compiler. You can also run the source through
some obfuscation tool. Or get a first hint with using -ftime-report.
In the end, without a testcase there is nothing to do for us ...
> email@example.com -- Speaking for myself only