[llvm-bugs] [Bug 31491] New: NewGVN cause clang to crash when compiling neon

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31491

            Bug ID: 31491
           Summary: NewGVN cause clang to crash when compiling neon
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: lukebenes at hotmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 17787
  --> https://llvm.org/bugs/attachment.cgi?id=17787&action=edit
Reproducer .c

Steps to reproduce:
1. Download neon 0.30.0, http://www.webdav.org/neon/
2. export CFLAGS="-O3 -march=native -mllvm -enable-newgvn"
3. ./autogen.sh &&& ./configure && make

Output:

/include/mit-krb5 -I.. -DNE_PRIVATE=extern -O3 -march=native -mllvm
-enable-newgvn -prefer-pic -c ne_auth.c -o ne_auth.lo
clang-4.0: error: unable to execute command: Killed
clang-4.0: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 4.0.0 (trunk 290647)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang-4.0: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
clang-4.0: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-4.0: note: diagnostic msg: /tmp/ne_auth-4a6c83.c
clang-4.0: note: diagnostic msg: /tmp/ne_auth-4a6c83.sh

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