[MachineLICM] Debug intrinsics shouldn't affect hoist decisions
Summary:
When checking if an instruction stores to a given frame index, check
that the instruction can write to memory before looking at the memory
operands list to avoid e.g. DBG_VALUE instructions that reference a
frame index preventing a load from that index from being hoisted.
Reviewers: dblaikie, MatzeB, qcolombet, reames, javed.absar
Subscribers: mcrosier, llvm-commits
Differential Revision: https://reviews.llvm.org/D46284
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331549 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed