[llvm-bugs] [Bug 31501] New: -mllvm -enable-newgvn creates a broken clang-tblgen

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31501

            Bug ID: 31501
           Summary: -mllvm -enable-newgvn creates a broken clang-tblgen
           Product: new-bugs
           Version: trunk
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: howarth.mailing.lists at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

In a 3-stage bootstrap of llvm/clang/compiler-rt/polly/openmp using -mllvm
-enable-newgvn with the stage2 compiler, the clang-tblgen created is broken and
hangs on the compilation of...

 47%] Building AttrImpl.inc...
cd /sw/src/fink.build/llvm40-4.0.0-1/build/stage2/tools/clang/include/clang/AST
&& ../../../../../bin/clang-tblgen -gen-clang-attr-impl -I
/sw/src/fink.build/llvm40-4.0.0-1/llvm-4.0.0.src/tools/clang/include/clang/AST/../../
-I
/sw/src/fink.build/llvm40-4.0.0-1/llvm-4.0.0.src/tools/clang/include/clang/AST
-I /sw/src/fink.build/llvm40-4.0.0-1/llvm-4.0.0.src/include
/sw/src/fink.build/llvm40-4.0.0-1/llvm-4.0.0.src/tools/clang/include/clang/AST/../Basic/Attr.td
-o
/sw/src/fink.build/llvm40-4.0.0-1/build/stage2/tools/clang/include/clang/AST/AttrImpl.inc.tmp

with 100% cpu-usage per job for a 'make -j9'build...

PID    COMMAND      %CPU      TIME     #TH    #WQ   #PORT MEM    PURG   CMPR
PGRP  PPID  STATE    BOOSTS          %CPU_ME %CPU_OTHRS UID  FAULTS   COW   
MSGSENT
43314  clang-tblgen 98.9      35:50.76 1/1    0     12    368K   0B     0B  
778   43313 running  *0[1]           0.00000 0.00000    604  358      66     51
43323  clang-tblgen 98.8      35:50.00 1/1    0     12    368K   0B     0B  
778   43322 running  *0[1]           0.00000 0.00000    604  358      66     50
43384  clang-tblgen 98.5      35:48.49 1/1    0     12    368K   0B     0B  
778   43383 running  *0[1]           0.00000 0.00000    604  358      66     53
43360  clang-tblgen 98.5      35:49.10 1/1    0     12    368K   0B     0B  
778   43358 running  *0[1]           0.00000 0.00000    604  358      67     50
43158  clang-tblgen 98.5      35:51.60 1/1    0     12    368K   0B     0B  
778   43157 running  *0[1]           0.00000 0.00000    604  358      66     63
43041  clang-tblgen 98.4      35:53.39 1/1    0     12    396K   0B     0B  
778   43040 running  *0[1]           0.00000 0.00000    604  366      67     63
43220  clang-tblgen 98.2      35:51.74 1/1    0     12    368K   0B     0B  
778   43219 running  *0[1]           0.00000 0.00000    604  358      67     56
43523  clang-tblgen 97.1      35:18.11 1/1    0     12    368K   0B     0B  
778   43522 running  *0[1]           0.00000 0.00000    604  358      67     53

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