[ARM] Reject CSEL instructions with invalid operands
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.
Reviewers: momchil.velikov, dmgreen, ostannard, simon_tatham, t.p.northover
Reviewed By: ostannard
Subscribers: javed.absar, kristof.beyls, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D65505
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@367433
91177308-0d34-0410-b5e6-
96231b3b80d8
projects / llvm / commit