[llvm-bugs] [Bug 40749] New: [MemSSA] Assertion "Should have dominated the new access"' failed.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40749

            Bug ID: 40749
           Summary: [MemSSA]  Assertion "Should have dominated the new
                    access"' failed.
           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 21485
  --> https://bugs.llvm.org/attachment.cgi?id=21485&action=edit
reduced testcase

opt -mtriple=systemz-unknown -mcpu=z13 tc_mssa_dom_access.ll -O3 -S -o
out.opt.ll -enable-mssa-loop-dependency

lib/Analysis/MemorySSAUpdater.cpp:369: void
llvm::MemorySSAUpdater::fixupDefs(const llvm::SmallVectorImpl<llvm::WeakVH>&):
Assertion `MSSA->dominates(NewDef, FirstDef) && "Should have dominated the new
access"' failed.
Stack dump:

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