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archived-llvm/test/CodeGen/SystemZ
Jonas Paulsson c833eb7ff6 [SystemZ] Check for presence of vector support in SystemZISelLowering
A test case was found with llvm-stress that caused DAGCombiner to crash
when compiling for an older subtarget without vector support.

SystemZTargetLowering::combineTruncateExtract() should do nothing for older
subtargets.

This check was placed in canTreatAsByteVector(), which also helps in a few
other places.

Review: Ulrich Weigand

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299763 91177308-0d34-0410-b5e6-96231b3b80d8
2017-04-07 12:35:11 +00:00
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