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[ARM] Reject CSEL instructions with invalid operands
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Authored by miyuki on Jul 31 2019, 3:47 AM.

Details

Summary

According to the Armv8.1-M manual CSEL, CSINC, CSINV and CSNEG are
"constrained unpredictable" when SP is used as the source register Rn.

The assembler should diagnose this case.

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Repository
rL LLVM

Event Timeline

miyuki created this revision.Jul 31 2019, 3:47 AM
This revision is now accepted and ready to land.Jul 31 2019, 6:58 AM
This revision was automatically updated to reflect the committed changes.