[Bug 238082] graphics/mesa-dri: clang 8 (from head at r347549) crashes during build on powerpc64 (WITH_CLANG_IS_CC)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238082

Jan Beich <jbeich at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|system clang 8 on powerpc64 |graphics/mesa-dri: clang 8
                   |head -r347549 based system: |(from head at r347549) crashes
                   |clang asserts with "Target  |during build on powerpc64
                   |supports vector op, but     |(WITH_CLANG_IS_CC)
                   |scalar requires expansion?" |
                   |for graphics/mesa-dri build |
           Keywords|                            |regression
             Blocks|                            |236062

--- Comment #3 from Jan Beich <jbeich at FreeBSD.org> ---
Clang 6.0.1 on 12.0 and devel/llvm70 before ports r490610 don't crash. Can
someone bisect, minimize and submit upstream for feedback?

$ sh nir_constant_expressions-9b094e.sh
Assertion failed: (!TLI.isOperationLegalOrCustom(N->getOpcode(), WideVecVT) &&
"Target supports vector op, but scalar requires expansion?"), function
WidenVectorResult, file
/usr/src/contrib/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp, line
2532.
Abort trap


Referenced Bugs:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236062
[Bug 236062] [exp-run] Against projects/clang800-import branch
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