[llvm-bugs] [Bug 40317] New: [MemorySSA + LICM CFHoisting] Assertion "We don't have the same number of accesses in the block as on the access list" failed

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Jan 15 06:10:08 PST 2019


https://bugs.llvm.org/show_bug.cgi?id=40317

            Bug ID: 40317
           Summary: [MemorySSA + LICM CFHoisting]  Assertion "We don't
                    have the same number of accesses in the block as on
                    the access list" failed
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Loop Optimizer
          Assignee: unassignedbugs at nondot.org
          Reporter: paulsson at linux.vnet.ibm.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 21327
  --> https://bugs.llvm.org/attachment.cgi?id=21327&action=edit
reduced testcase

bin/opt -march=z13 -S -O3  tc_memssa_licmcfh.ll -enable-mssa-loop-dependency
-licm-control-flow-hoisting

lib/Analysis/MemorySSA.cpp:1887: void
llvm::MemorySSA::verifyOrdering(llvm::Function&) const: Assertion `AL->size()
== ActualAccesses.size() && "We don't have the same number of accesses in the
block as on the " "access list"' failed.

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