1 // RUN: llvm-tblgen %s | FileCheck %s 2 3 // Support for an `!if' operator as part of a `let' statement. 4 // CHECK: class C 5 // CHECK-NEXT: bits<16> n = { ?, ?, ?, ?, !if({ C:y{3} }, 1, !if({ C:y{2} }, { C:x{0} }, !if({ C:y{1} }, { C:x{1} }, !if({ C:y{0} }, { C:x{2} }, ?)))){0}, !if({ C:x{2} }, { C:y{3}, C:y{2} }, !if({ C:x{1} }, { C:y{2}, C:y{1} }, !if({ C:x{0} }, { C:y{1}, C:y{0} }, ?))){1}, !if({ C:x{2} }, { C:y{3}, C:y{2} }, !if({ C:x{1} }, { C:y{2}, C:y{1} }, !if({ C:x{0} }, { C:y{1}, C:y{0} }, ?))){0}, !if({ C:x{2} }, 2, 6){2}, !if({ C:x{2} }, 2, 6){1}, !if({ C:x{2} }, 2, 6){0}, !if({ C:x{1} }, { C:y{3}, C:y{2} }, { 0, 1 }){1}, !if({ C:x{1} }, { C:y{3}, C:y{2} }, { 0, 1 }){0}, !if({ C:x{0} }, { C:y{3}, C:y{2}, C:y{1}, C:y{0} }, { C:z, C:y{2}, C:y{1}, C:y{0} }){3}, !if({ C:x{0} }, { C:y{3}, C:y{2}, C:y{1}, C:y{0} }, { C:z, C:y{2}, C:y{1}, C:y{0} }){2}, !if({ C:x{0} }, { C:y{3}, C:y{2}, C:y{1}, C:y{0} }, { C:z, C:y{2}, C:y{1}, C:y{0} }){1}, !if({ C:x{0} }, { C:y{3}, C:y{2}, C:y{1}, C:y{0} }, { C:z, C:y{2}, C:y{1}, C:y{0} }){0} }; 6 class C<bits<3> x, bits<4> y, bit z> { 7 bits<16> n; 8 9 let n{11} = !if(y{3}, 1, 10 !if(y{2}, x{0}, 11 !if(y{1}, x{1}, 12 !if(y{0}, x{2}, ?)))); 13 let n{10-9}= !if(x{2}, y{3-2}, 14 !if(x{1}, y{2-1}, 15 !if(x{0}, y{1-0}, ?))); 16 let n{8-6} = !if(x{2}, 0b010, 0b110); 17 let n{5-4} = !if(x{1}, y{3-2}, {0, 1}); 18 let n{3-0} = !if(x{0}, y{3-0}, {z, y{2}, y{1}, y{0}}); 19 } 20 21 def C1 : C<{1, 0, 1}, {0, 1, 0, 1}, 0>; 22 def C2 : C<{0, 1, 0}, {1, 0, 1, 0}, 1>; 23 def C3 : C<{0, 0, 0}, {1, 0, 1, 0}, 0>; 24 def C4 : C<{0, 0, 0}, {0, 0, 0, 0}, 0>; 25 26 // CHECK: def C1 27 // CHECK-NEXT: bits<16> n = { ?, ?, ?, ?, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 }; 28 // CHECK: def C2 29 // CHECK-NEXT: bits<16> n = { ?, ?, ?, ?, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0 }; 30 // CHECK: def C3 31 // CHECK-NEXT: bits<16> n = { ?, ?, ?, ?, 1, ?, ?, 1, 1, 0, 0, 1, 0, 0, 1, 0 }; 32 // CHECK: def C4 33 // CHECK-NEXT: bits<16> n = { ?, ?, ?, ?, ?, ?, ?, 1, 1, 0, 0, 1, 0, 0, 0, 0 }; 34 35 class S<int s> { 36 bits<2> val = !if(!eq(s, 8), {0, 0}, 37 !if(!eq(s, 16), 0b01, 38 !if(!eq(s, 32), 2, 39 !if(!eq(s, 64), {1, 1}, ?)))); 40 } 41 42 def D8 : S<8>; 43 def D16 : S<16>; 44 def D32 : S<32>; 45 def D64 : S<64>; 46 def D128: S<128>; 47 // CHECK: def D128 48 // CHECK-NEXT: bits<2> val = { ?, ? }; 49 // CHECK: def D16 50 // CHECK-NEXT: bits<2> val = { 0, 1 }; 51 // CHECK: def D32 52 // CHECK-NEXT: bits<2> val = { 1, 0 }; 53 // CHECK: def D64 54 // CHECK-NEXT: bits<2> val = { 1, 1 }; 55 // CHECK: def D8 56 // CHECK-NEXT: bits<2> val = { 0, 0 }; 57 58 // CHECK: def One 59 // CHECK-NEXT: list<int> first = [1, 2, 3]; 60 // CHECK-NEXT: list<int> rest = [1, 2, 3]; 61 62 // CHECK: def OneB 63 // CHECK-NEXT: list<int> vals = [1, 2, 3]; 64 65 // CHECK: def Two 66 // CHECK-NEXT: list<int> first = [1, 2, 3]; 67 // CHECK-NEXT: list<int> rest = [4, 5, 6]; 68 69 // CHECK: def TwoB 70 // CHECK-NEXT: list<int> vals = [4, 5, 6]; 71 72 class A<list<list<int>> vals> { 73 list<int> first = vals[0]; 74 list<int> rest = !if(!empty(!tail(vals)), vals[0], vals[1]); 75 } 76 77 def One : A<[[1,2,3]]>; 78 def Two : A<[[1,2,3], [4,5,6]]>; 79 80 class B<list<int> v> { 81 list<int> vals = v; 82 } 83 84 class BB<list<list<int>> vals> : B<!if(!empty(!tail(vals)), vals[0], vals[1])>; 85 class BBB<list<list<int>> vals> : BB<vals>; 86 87 def OneB : BBB<[[1,2,3]]>; 88 def TwoB : BBB<[[1,2,3],[4,5,6]]>; 89
