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1f5263e43f
Currently instructions are folded very aggressively into the memory operation, which can lead to the use of killed operands: %vreg1<def> = ADDXri %vreg0<kill>, 2 %vreg2<def> = LDRBBui %vreg0, 2 ... = ... %vreg1 ... This usually happens when the result is also used by another non-memory instruction in the same basic block, or any instruction in another basic block. If the computed address is used by only memory operations in the same basic block, then it is safe to fold them. This is because all memory operations will fold the address computation and the original computation will never be emitted. This fixes rdar://problem/18142857. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216629 91177308-0d34-0410-b5e6-96231b3b80d8
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