[llvm-bugs] [Bug 43951] New: [LoopVectorizer] Assertion `Instance.Lane > 0 ? !Cost->isUniformAfterVectorization(cast<Instruction>(V), VF) : true && "Uniform values only have lane zero"' failed.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43951

            Bug ID: 43951
           Summary: [LoopVectorizer]  Assertion `Instance.Lane > 0 ?
                    !Cost->isUniformAfterVectorization(cast<Instruction>(V
                    ), VF) : true && "Uniform values only have lane zero"'
                    failed.
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          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 22788
  --> https://bugs.llvm.org/attachment.cgi?id=22788&action=edit
reduced testcase

clang -cc1 -triple s390x-ibm-linux -S -target-cpu z13 -O3 -vectorize-loops
-mllvm -disable-lftr -mllvm -enable-simple-loop-unswitch -mllvm -force-t
arget-instruction-cost=1 -faddrsig -o out.s -x ir tc_loopvec.ll

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