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Add an (interleave A, B, ...) SetTheory operator.

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This will interleave the elements from two or more lists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148824 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-01-24 18:06:05 +00:00
parent 9136f2112c
commit 5b52f6d655
3 changed files with 29 additions and 0 deletions
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7
test/TableGen/SetTheory.td
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@@ -165,3 +165,10 @@ def S9d : Set<(sequence "S%ua", 7, 9)>;
// CHECK: S9b = [ e7 e6 e5 e4 e3 ]
// CHECK: S9c = [ e0 ]
// CHECK: S9d = [ a b c d e0 e3 e6 e9 e4 e5 e7 ]
// The 'interleave' operator is almost the inverse of 'decimate'.
def interleave;
def T0a : Set<(interleave S9a, S9b)>;
def T0b : Set<(interleave S8e, S8d)>;
// CHECK: T0a = [ e3 e7 e4 e6 e5 ]
// CHECK: T0b = [ e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ]