https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92832
--- Comment #4 from David Binderman <dcb314 at hotmail dot com> --- Some progress: make -j 1 with languages set to C only, got this: /home/dcb/gcc/working/./gcc/xgcc -B/home/dcb/gcc/working/./gcc/ -B/home/dcb/gcc/results.279100.valgrind/x86_64-pc-linux-gnu/bin/ -B/home/dcb/gcc/results.279100.valgrind/x86_64-pc-linux-gnu/lib/ -isystem /home/dcb/gcc/results.279100.valgrind/x86_64-pc-linux-gnu/include -isystem /home/dcb/gcc/results.279100.valgrind/x86_64-pc-linux-gnu/sys-include -g -O3 -O2 -g -O3 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fpic -mlong-double-80 -DUSE_ELF_SYMVER -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -fpic -mlong-double-80 -DUSE_ELF_SYMVER -I. -I. -I../.././gcc -I../../../trunk/libgcc -I../../../trunk/libgcc/. -I../../../trunk/libgcc/../gcc -I../../../trunk/libgcc/../include -I../../../trunk/libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS -DUSE_TLS -o _clear_cache.o -MT _clear_cache.o -MD -MP -MF _clear_cache.dep -DL_clear_cache -c ../../../trunk/libgcc/libgcc2.c -fvisibility=hidden -DHIDE_EXPORTS ==647411== Conditional jump or move depends on uninitialised value(s) ==647411== at 0x14990E8: incorporate_penalties (ipa-cp.c:3174) I will get the pre-processed file to you.
