[llvm-bugs] [Bug 34743] New: After r311849 Loop Vectorizer generates broken code

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=34743

            Bug ID: 34743
           Summary: After r311849 Loop Vectorizer generates broken code
           Product: tools
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: opt
          Assignee: unassignedbugs at nondot.org
          Reporter: serguei.katkov at azul.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 19203
  --> https://bugs.llvm.org/attachment.cgi?id=19203&action=edit
Reproducer

After r311849 Loop Vectorizer generates a broken code.
The reproducer is attached.

to reproduce the issue I ran:
$ opt -mcpu=broadwell -loop-vectorize test.ll -S
Instruction does not dominate all uses!
  %59 = sext i32 %scalar.recur to i64
  %broadcast.splatinsert = insertelement <4 x i64> undef, i64 %59, i32 0
LLVM ERROR: Broken function found, compilation aborted!

Could you please fix this as soon as possible or disable the functionality
causing a regression.

-- 
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/20170927/ca2d802e/attachment.html>