[llvm-bugs] [Bug 30923] New: clang hangs while compiling tiff

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30923

            Bug ID: 30923
           Summary: clang hangs while compiling tiff
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: raj.khem at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 17559
  --> https://llvm.org/bugs/attachment.cgi?id=17559&action=edit
Preprocessed test case (compressed with tar and bzip2)

This is very recent that it now hangs while compiling the attached file on
x86_64 using these cmdline arguments



/mnt/oe/openembedded-core/build/tmp-glibc/sysroots/x86_64-linux/usr/bin/clang-4.0
-cc1 -triple x86_64-oe-linux -S -o a.s -x c ~/a.c -vectorize-slp -O2
-target-cpu corei7


if I remove -vectorize-slp it works and also when removing -target-cpu corei7
it works.

here is clang information

clang version 4.0.0 (git://github.com/llvm-mirror/clang.git
80464680ce2ae47d30b9a404597643e5d8bf6bba)
(git://github.com/llvm-mirror/llvm.git
ae152bde495ec05ab6064e5336f3fd5344dbe0e7)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir:
/mnt/oe/openembedded-core/build/tmp-glibc/sysroots/x86_64-linux/usr/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.3
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64

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