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44c4846682
Summary: This changes the syntax of !foreach so that the first "parameter" is a new syntactic variable: !foreach(x, lst, expr) will define the variable x within the scope of expr, and evaluation of the !foreach will substitute elements of the given list (or dag) for x in expr. Aside from leading to a nicer syntax, this allows more complex expressions where x is deeply nested, or even constant expressions in which x does not occur at all. !foreach is currently not actually used anywhere in trunk, but I plan to use it in the AMDGPU backend. If out-of-tree targets are using it, they can adjust to the new syntax very easily. Change-Id: Ib966694d8ab6542279d6bc358b6f4d767945a805 Reviewers: arsenm, craig.topper, tra, MartinO Subscribers: wdng, llvm-commits, tpr Differential Revision: https://reviews.llvm.org/D43651 llvm-svn: 326705 |
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