mpz reuse test takes too much time

[Vincent Lefevre]

Hi,

With GMP 6.1.1 on a Debian GNU/Linux 8 (jessie) machine with
AMD Opteron(TM) Processor 6272 @ 2.1 GHz, the "reuse" test in
mpz takes too much time.

I just did "./configure" and "make" and "make check", and
noticed that the "reuse" test took around 110 seconds. All
the other tests are much faster.

Individual test:

fraise:...p-6.1.1/tests/mpz> time ./reuse
./reuse  116.58s user 0.60s system 100% cpu 1:57.13 total

System information:

fraise:~/software/gmp-6.1.1> gcc -v
Using built-in specs.
COLLECT_GCC=/usr/bin/gcc-4.9.real
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.2-10' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.9 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.2 (Debian 4.9.2-10)

fraise:~/software/gmp-6.1.1> uname -a
Linux fraise 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux

fraise:~/software/gmp-6.1.1> ./config.guess
bulldozer-pc-linux-gnu

fraise:~/software/gmp-6.1.1> ./configfsf.guess
x86_64-pc-linux-gnu

-- 
Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)