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[Bug target/50182] Performance degradation from gcc 4.1 (x86_64)
- From: "oleg at smolsky dot net" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 24 Oct 2011 18:27:28 +0000
- Subject: [Bug target/50182] Performance degradation from gcc 4.1 (x86_64)
- Auto-submitted: auto-generated
- References: <bug-50182-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50182
--- Comment #16 from oleg at smolsky dot net 2011-10-24 18:27:28 UTC ---
$ /work/tools/gcc47/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/work/tools/gcc47/bin/g++
COLLECT_LTO_WRAPPER=/work/tools/gcc47/libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.7/configure --prefix=/work/tools/gcc47
--enable-languages=c,c++ --with-system-zlib
--with-mpfr=/work/tools/mpfr24 --with-gmp=/work/tools/gmp
--with-mpc=/work/tools/mpc
LD_LIBRARY_PATH=/work/tools/mpfr/lib24:/work/tools/gmp/lib:/work/tools/mpc/lib
Thread model: posix
gcc version 4.7.0 20111001 (experimental) (GCC)
The test case, test.cpp was compiled with this command:
/work/tools/gcc47/bin/g++ -I. -g -O3 -static-libstdc++ -static-libgcc
-march=native test.cpp -o test