[llvm-bugs] [Bug 45989] New: [SLP vectorizer] Compilation hang

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=45989

            Bug ID: 45989
           Summary: [SLP vectorizer]  Compilation hang
           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 23507
  --> https://bugs.llvm.org/attachment.cgi?id=23507&action=edit
testcase

time /home/ijonpan/llvm-project/build/bin/clang -O3 -march=z13 crash15.i -o
./a.out -w
user    0m8.712s

time /home/ijonpan/llvm-project/build/bin/clang -O3 -march=z13 crash15.i -o
./a.out -w -mllvm -slp-min-tree-size=1
(does not terminate over night)

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