From: JonY <10walls@gmail.com>
To: cygwin@cygwin.com
Subject: Re: [ANNOUNCEMENT] [Updated] mingw64-{i686,x86_64}-gcc-7.3.0-1 (Test)
Date: Fri, 24 Aug 2018 19:06:00 -0000 [thread overview]
Message-ID: <c80de729-677c-5125-e703-efb784e8febe@gmail.com> (raw)
In-Reply-To: <5b7b846f.1c69fb81.fdb19.08eb@mx.google.com>
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On 08/21/2018 03:18 AM, Steven Penny wrote:
> On Wed, 18 Jul 2018 10:38:22, JonY wrote:
>> The mingw-w64 cross compilers have been updated:
>>
>> * mingw64-i686-gcc-7.3.0-1
>> * mingw64-x86_64-gcc-7.3.0-1
>>
>> It is available under the test version.
>
> http://cygwin.com/ml/cygwin/2018-07/msg00168.html
>
> Using this file:
>
> $ cat stoi.cpp
> #include <iostream>
> #include <string>
> main() {
> std::string q = "23456";
> std::cout << std::stoi(q) << std::endl;
> }
>
> I have noticed an issue with the Cygwin "x86_64-w64-mingw32-g++"
> compiler. If I
> strip the executable, all is well:
>
> $ time x86_64-w64-mingw32-g++ -s -static-libstdc++ stoi.cpp; wc -c a.exe
> real 0m0.889s
> 845824 a.exe
>
> Same with Msys2:
>
> # time x86_64-w64-mingw32-g++ -s -static-libstdc++ stoi.cpp; wc -c a.exe
> real 0m0.718s
> 835584 a.exe
>
> However if I do not strip the executable, the compile time nearly
> triples and
> the size increases 10 fold:
>
> $ time x86_64-w64-mingw32-g++ -static-libstdc++ stoi.cpp; wc -c a.exe
> real 0m2.340s
> 11695660 a.exe
>
> Compare with Msys2, where the time only increases 17%, and the size only
> increases 3 fold:
>
> # time x86_64-w64-mingw32-g++ -static-libstdc++ stoi.cpp; wc -c a.exe
> real 0m0.842s
> 3001138 a.exe
Can you try breaking it down by phases?
1. Preprocessor phase with -E -o file.ii
2. Compile phase (compile output from phase 1) with -c
3. Link phase, point gcc to the output from phase 2.
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next prev parent reply other threads:[~2018-08-24 10:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-18 23:52 JonY
2018-08-21 15:16 ` Steven Penny
2018-08-24 19:06 ` JonY [this message]
2018-08-25 4:55 ` Steven Penny
2018-08-26 14:04 ` JonY
2018-08-27 3:32 ` Steven Penny
2018-08-26 15:17 ` Hans-Bernhard Bröker
2018-08-26 21:41 ` Steven Penny
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