[PATCH] D88419: [RDA] Switch isSafeToMove iterators

[Sam Parker via Phabricator via llvm-commits]

samparker added inline comments.


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Comment at: llvm/lib/CodeGen/ReachingDefAnalysis.cpp:582
                                                 MachineInstr *To) const {
-  return isSafeToMove<MachineBasicBlock::iterator>(From, To);
+  using Iterator = MachineBasicBlock::reverse_iterator;
+  // Walk backwards until we find the instruction.
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SjoerdMeijer wrote:
> This code is an exact copy of the previous one, except one iterator. This can probably be refactored into one `IsSafeToMove` function that gets passed in this iterator. But it's a nit, up to you if it is worth doing this.
I thought the same, but each loop uses different sentinels: begin/rbegin and end/rend and I didn't see a way to handle that.


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  https://reviews.llvm.org/D88419/new/

https://reviews.llvm.org/D88419