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Implement !if, analogous to $(if) in GNU make.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71815 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Greene
2009-05-14 23:26:46 +00:00
parent 11adeed8b3
commit 9bea7c85d7
7 changed files with 63 additions and 2 deletions
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20
test/TableGen/if.td Normal file
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@@ -0,0 +1,20 @@
// RUN: tblgen %s | grep {1, 2, 3} | count 4
// RUN: tblgen %s | grep {4, 5, 6} | count 2
class A<list<list<int>> vals> {
list<int> first = vals[0];
list<int> rest = !if(!null(!cdr(vals)), vals[0], vals[1]);
}
def One : A<[[1,2,3]]>;
def Two : A<[[1,2,3],[4,5,6]]>;
class B<list<int> v> {
list<int> vals = v;
}
class BB<list<list<int>> vals> : B<!if(!null(!cdr(vals)), vals[0], vals[1])>;
class BBB<list<list<int>> vals> : BB<vals>;
def OneB : BBB<[[1,2,3]]>;
def TwoB : BBB<[[1,2,3],[4,5,6]]>;