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76604af774
for use with C++11 range-based for-loops. The gist of phase 1 is to remove the skipInstruction() and skipBundle() methods from these iterators, instead splitting each iterator into a version that walks operands, a version that walks instructions, and a version that walks bundles. This has the result of making some "clever" loops in lib/CodeGen more verbose, but also makes their iterator invalidation characteristics much more obvious to the casual reader. (Making them concise again in the future is a good motivating case for a pre-incrementing range adapter!) Phase 2 of this undertaking with consist of removing the getOperand() method, and changing operator*() of the operand-walker to return a MachineOperand&. At that point, it should be possible to add range views for them that work as one might expect. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203757 91177308-0d34-0410-b5e6-96231b3b80d8
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