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llvm-6502/test/TableGen/if.td
David Greene 1434f66b2e Rename lisp-like functions as suggested by Gabor Greif as loooong time
ago.  This is both easier to learn and easier to read.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123001 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-07 17:05:37 +00:00

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1.4 KiB
TableGen

// RUN: tblgen %s | FileCheck %s
// XFAIL: vg_leak
// Support for an `!if' operator as part of a `let' statement.
// CHECK: class C
// CHECK-NEXT: bits<16> n = { ?, ?, ?, ?, ?, ?, ?, !if({ C:x{2} }, 0, 1), !if({ C:x{2} }, 1, 1), !if({ C:x{2} }, 0, 0), !if({ C:x{1} }, C:y{3}, 0), !if({ C:x{1} }, C:y{2}, 1), !if({ C:x{0} }, C:y{3}, C:z), !if({ C:x{0} }, C:y{2}, C:y{2}), !if({ C:x{0} }, C:y{1}, C:y{1}), !if({ C:x{0} }, C:y{0}, C:y{0}) };
class C<bits<3> x, bits<4> y, bit z> {
bits<16> n;
let n{8-6} = !if(x{2}, 0b010, 0b110);
let n{5-4} = !if(x{1}, y{3-2}, {0, 1});
let n{3-0} = !if(x{0}, y{3-0}, {z, y{2}, y{1}, y{0}});
}
// CHECK: def One
// CHECK-NEXT: list<int> first = [1, 2, 3];
// CHECK-NEXT: list<int> rest = [1, 2, 3];
// CHECK: def OneB
// CHECK-NEXT: list<int> vals = [1, 2, 3];
// CHECK: def Two
// CHECK-NEXT: list<int> first = [1, 2, 3];
// CHECK-NEXT: list<int> rest = [4, 5, 6];
// CHECK: def TwoB
// CHECK-NEXT: list<int> vals = [4, 5, 6];
class A<list<list<int>> vals> {
list<int> first = vals[0];
list<int> rest = !if(!empty(!tail(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(!empty(!tail(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]]>;