[LLVMbugs] [Bug 1056] NEW: Crash building llvm-gcc on FreeBSD x86_64

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1056

           Summary: Crash building llvm-gcc on FreeBSD x86_64
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Interprocedural Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: jeffc at jolt-lang.org


The last file compiled during the build of llvm-gcc when it crashes:

/usr/home/jeffc/llvm-gcc/obj/gcc/xgcc -B/usr/home/jeffc/llvm-gcc/obj/gcc/
-B/home/jeffc/llvm-gcc/install/amd64-unknown-freebsd6.1/bin/
-B/home/jeffc/llvm-gcc/install/amd64-unknown-freebsd6.1/lib/ -isystem
/home/jeffc/llvm-gcc/install/amd64-unknown-freebsd6.1/include -isystem
/home/jeffc/llvm-gcc/install/amd64-unknown-freebsd6.1/sys-include -O2  -DIN_GCC
   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition  -isystem ./include   -fPIC -pthread -g
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../gcc
-I../../gcc/. -I../../gcc/../include -I./../intl -I../../gcc/../libcpp/include 
-I/usr/home/jeffc/llvm/include -I/home/jeffc/llvm/obj/include -DL_lshrdi3 -c
../../gcc/libgcc2.c -o libgcc/./_lshrdi3.o
WARNING: 128-bit integers not supported!
../../gcc/libgcc2.c: In function '__lshrti3':
../../gcc/libgcc2.c:412: internal compiler error: Segmentation fault: 11

This is apparently due to an optimization bug in LLVM.  The crash goes away if
the -O2 option is removed.  The preprocessed version of the file, as well as the
bytecode file produced with -emit-llvm -O0 is attached.



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