[llvm-bugs] [Bug 38887] New: llvm.ppc.altivec.vcmpgtsb Do not know how to split the result of this operator

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=38887

            Bug ID: 38887
           Summary: llvm.ppc.altivec.vcmpgtsb Do not know how to split the
                    result of this operator
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: joel at jms.id.au
                CC: llvm-bugs at lists.llvm.org

Created attachment 20857
  --> https://bugs.llvm.org/attachment.cgi?id=20857&action=edit
Preprocessed source

Running clang trunk on ppc64le, building the ppc64le Linux kernel fails when
attempting to build lib/raid6/altivec1.c

SplitVectorResult #0: t196: v16i8 = llvm.ppc.altivec.vcmpgtsb
TargetConstant:i64<4823>, t146, t195

fatal error: error in backend: Do not know how to split the result of this
operator!

clang-8: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 8.0.0 (trunk 341773)
Target: powerpc64le-unknown-linux-gnu
Thread model: posix
InstalledDir: /scratch/joel/llvm-build/bin
clang-8: note: diagnostic msg: PLEASE submit a bug report to
https://bugs.llvm.org/ and include the crash backtrace, preprocessed source,
and associated run script.

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