[LLVMbugs] [Bug 11273] New: building llvm 3.0rc1 hangs on OpenBSD sparc64 in llvm-tblgen

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11273

             Bug #: 11273
           Summary: building llvm 3.0rc1 hangs on OpenBSD sparc64 in
                    llvm-tblgen
           Product: new-bugs
           Version: trunk
          Platform: Sun
        OS/Version: OpenBSD
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sebastia at l00-bugdead-prods.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


trying to build llvm/clang on OpenBSD 5.0 -current sparc64, hangs here:

llvm[3]: Building PPC.td code emitter with tblgen
/home/ports/pobj/llvm-3.0rc1.src/build-sparc64/Release/bin/llvm-tblgen -I 
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/lib/Target/PowerPC -I 
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/include -I 
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/include -I 
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/lib/Target -gen-emitter -o 
/home/ports/pobj/llvm-3.0rc1.src/build-sparc64/lib/Target/PowerPC/Release/PPCGenCodeEmitter.inc.tmp
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/lib/Target/PowerPC/PPC.td
/usr/bin/cmp -s PPCGenCodeEmitter.inc
/home/ports/pobj/llvm-3.0rc1.src/build-sparc64/lib/Target/PowerPC/Release/PPCGenCodeEmitter.inc.tmp
|| /bin/cp
/home/ports/pobj/llvm-3.0rc1.src/build-sparc64/lib/Target/PowerPC/Release/PPCGenCodeEmitter.inc.tmp
PPCGenCodeEmitter.inc
llvm[3]: Building PPC.td instruction information with tblgen
/home/ports/pobj/llvm-3.0rc1.src/build-sparc64/Release/bin/llvm-tblgen -I 
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/lib/Target/PowerPC -I 
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/include -I 
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/include -I 
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/lib/Target -gen-instr-info -o 
/home/ports/pobj/llvm-3.0rc1.src/build-sparc64/lib/Target/PowerPC/Release/PPCGenInstrInfo.inc.tmp
/home/ports/pobj/llvm-3.0rc1.src/llvm-3.0rc1/lib/Target/PowerPC/PPC.td

top output:
load averages:  1.17,  1.25,  1.17                                             
                                                       enterprise.ds9 08:35:41
42 processes:  40 idle, 2 on processor
CPU0 states:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
CPU1 states:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
CPU2 states:  0.2% user,  0.0% nice,  0.0% system,  0.0% interrupt, 99.8% idle
CPU3 states:  0.0% user,  0.0% nice,  100% system,  0.0% interrupt,  0.0% idle
Memory: Real: 48M/536M act/tot Free: 1468M Cache: 373M Swap: 0K/587M

  PID USERNAME PRI NICE  SIZE   RES STATE     WAIT      TIME    CPU COMMAND
25101 root      64    0   15M   17M onproc/3  -       949:46 99.80% llvm-tblgen
 2040 sebastia  28    0 1696K 2928K onproc/2  -         1:59  0.00% top

The build was started at around 2 pm, now its 9 am next day. As top shows, this
process was very busy for a loooong time. The system is a Sun Enterprise Server
E450 with 4x400MHz and 2GB RAM.

attaching to the process with gdb, it hangs here:

(gdb) bt
#0  0x000000000021e7d8 in std::vector<llvm::Record*,
std::allocator<llvm::Record*> >::size ()
#1  0x0000000000225538 in llvm::Record::isSubClassOf ()
#2  0x00000000003723ac in llvm::InstrInfoEmitter::GetOperandInfo ()
#3  0x0000000000373c50 in llvm::InstrInfoEmitter::EmitOperandInfo ()
#4  0x000000000037451c in llvm::InstrInfoEmitter::run ()
#5  0x00000000003b9724 in LLVMTableGenAction::operator() ()
#6  0x00000000003cc020 in llvm::TableGenMain ()
#7  0x00000000003b5c08 in main ()

I marked this as release blocker, but you may decide otherwise. As far as I
know, llvm 2.9 also did not built or worked on OpenBSD sparc64. Don't know the
exact problem, but in the ports tree it was marked as broken.

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