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author | Bill Wendling <isanbard@gmail.com> | 2010-12-13 01:46:19 +0000 |
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committer | Bill Wendling <isanbard@gmail.com> | 2010-12-13 01:46:19 +0000 |
commit | 548f5a0b751aafba88473e4863c2baf7741b56a5 (patch) | |
tree | a27b4776c6bc3c5ee1d938632121d9d6e2664e61 /test/TableGen | |
parent | dcb54ce3da15ba41adeee020288e6c62cfae8c42 (diff) | |
download | external_llvm-548f5a0b751aafba88473e4863c2baf7741b56a5.zip external_llvm-548f5a0b751aafba88473e4863c2baf7741b56a5.tar.gz external_llvm-548f5a0b751aafba88473e4863c2baf7741b56a5.tar.bz2 |
Add support for using the `!if' operator when initializing variables:
class A<bit a, bits<3> x, bits<3> y> {
bits<3> z;
let z = !if(a, x, y);
}
The variable z will get the value of x when 'a' is 1 and 'y' when a is '0'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121666 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/TableGen')
-rw-r--r-- | test/TableGen/if.td | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/test/TableGen/if.td b/test/TableGen/if.td index 0bac0ba..bff9278 100644 --- a/test/TableGen/if.td +++ b/test/TableGen/if.td @@ -1,14 +1,38 @@ -// RUN: tblgen %s | grep {\\\[1, 2, 3\\\]} | count 4 -// RUN: tblgen %s | grep {\\\[4, 5, 6\\\]} | count 2 +// 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(!null(!cdr(vals)), vals[0], vals[1]); } def One : A<[[1,2,3]]>; -def Two : A<[[1,2,3],[4,5,6]]>; +def Two : A<[[1,2,3], [4,5,6]]>; class B<list<int> v> { list<int> vals = v; |