[Bug tree-optimization/26854] Inordinate compile times on large routines

["lucier at math dot purdue dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #18 from lucier at math dot purdue dot edu  2006-12-07 17:32 -------
Well, I decided to try it with 4.3.0 on powerpc64-apple-darwin8.8.0 and didn't
get any better results:

[descartes:~/Desktop] lucier% time /pkgs/gcc-4.3.0-64/bin/gcc -mcpu=970 -m64
-no-cpp-precomp -Wall -W -Wno-unused -O1 -fno-math-errno -fschedule-insns2
-fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fPIC
-fno-common -bundle -flat_namespace -undefined suppress
-I/usr/local/Gambit-C/include/ -ftime-report -fmem-report all.i
gcc: unrecognized option '-no-cpp-precomp'
all.c: In function '___H__20_all_2e_o1':
all.c:132856: internal compiler error: Bus error
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
923.482u 110.120s 22:51.89 75.3%        0+0k 0+12io 0pf+0w
[descartes:~/Desktop] lucier% /pkgs/gcc-4.3.0-64/bin/gcc -v
Using built-in specs.
Target: powerpc64-apple-darwin8.8.0
Configured with: ../configure --build=powerpc64-apple-darwin8.8.0
--host=powerpc64-apple-darwin8.8.0 --target=powerpc64-apple-darwin8.8.0
--with-gmp=/pkgs/gmp-4.2.1-64/ --with-mpfr=/pkgs/gmp-4.2.1-64/
--prefix=/pkgs/gcc-4.3.0-64 --enable-languages=c --enable-checking=no
Thread model: posix
gcc version 4.3.0 20061206 (experimental)

This is the branch that you installed your changes on, right Dan?

I suppose I should try it on another architecture to see whether the problem
might be darwin-specific, or ppc-specific, or 64-bit specific, or ...

Who knows?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26854