[llvm-bugs] [Bug 35839] New: assertion failure in NewGVN: Value number changed after main loop completed

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35839

            Bug ID: 35839
           Summary: assertion failure in NewGVN: Value number changed
                    after main loop completed
           Product: libraries
           Version: 6.0
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: superjoe30 at gmail.com
                CC: llvm-bugs at lists.llvm.org

This is latest release_60 revisions as of this morning:
LLVM r321742
clang r321788


clang -c -O3 -mllvm -enable-newgvn bad.ll
clang-6.0:
/home/andy/Downloads/llvm_release_60/lib/Transforms/Scalar/NewGVN.cpp:3285:
void {anonymous}::NewGVN::verifyIterationSettled(llvm::Function&): Assertion
`BeforeCC->isEquivalentTo(AfterCC) && "Value number changed after main loop
completed!"' failed.

I'll work on getting the IR smaller.

-- 
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/20180106/99f18147/attachment.html>