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curchs
2017 May 01
4
RFC: Stop using redundant PHI node entries for multi-edge predecessors
Hi,
On Mon, May 1, 2017 at 8:47 AM, Daniel Berlin via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>> Today, the IR requires that if you have multiple edges from A to B
>> (typically with a switch) any phi nodes in B must have an equal number of
>> entries for A, but that all of them must have the same value.
>
>> This seems rather annoying....
>> 1) It