[llvm-bugs] [Bug 35246] New: Clang hangs in "Simplify the CFG"

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35246

            Bug ID: 35246
           Summary: Clang hangs in "Simplify the CFG"
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: paulsson at linux.vnet.ibm.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 19385
  --> https://bugs.llvm.org/attachment.cgi?id=19385&action=edit
reduced testcase

Csmith discovered a program where clang just hangs at -O3, but runs at -O1.

The problem seems to be in "Simplify the CFG".

bin/clang -cc1 -triple s390x-ibm-linux -S -target-cpu z13 -v -O3 -w -emit-llvm
-x ir tc_hang.ll

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20171108/70e3c265/attachment.html>