| Nicolai Haehnle | c1b25e6 | 2018-03-06 13:48:30 +0000 | [diff] [blame] | 1 | // RUN: llvm-tblgen %s | FileCheck %s |
| Jeffrey Yasskin | 32989de | 2010-03-20 23:08:45 +0000 | [diff] [blame] | 2 | // XFAIL: vg_leak |
| Nicolai Haehnle | c1b25e6 | 2018-03-06 13:48:30 +0000 | [diff] [blame] | 3 | |
| 4 | // CHECK: --- Defs --- |
| 5 | |
| 6 | // Test that P and Q are not replaced by ?. TableGen's codegen emitter backend |
| 7 | // relies on keeping variable references like this around to describe the |
| 8 | // structure of instruction encodings. |
| 9 | // |
| 10 | // CHECK: def A { |
| 11 | // CHECK: bits<8> Inst = { 1, 1, 1, 1, 1, 1, P, Q }; |
| 12 | // CHECK: bits<2> src = { ?, ? }; |
| 13 | // CHECK: bit P = ?; |
| 14 | // CHECK: bit Q = ?; |
| 15 | // CHECK: } |
| 16 | |
| 17 | def A { |
| 18 | bits<8> Inst; |
| 19 | bits<2> src; |
| 20 | |
| 21 | bit P; |
| 22 | bit Q; |
| 23 | |
| 24 | let Inst{7-2} = 0x3f; |
| 25 | let Inst{1} = P; |
| 26 | let Inst{0} = Q; |
| 27 | |
| 28 | let P = src{1}; |
| 29 | let Q = src{0}; |
| 30 | } |
| 31 | |
| Bob Wilson | 2214dc0 | 2009-11-22 03:58:57 +0000 | [diff] [blame] | 32 | class x { |
| 33 | field bits<32> A; |
| 34 | } |
| 35 | |
| 36 | class y<bits<2> B> : x { |
| 37 | let A{21-20} = B; |
| 38 | } |
| 39 | |
| 40 | def z : y<{0,?}>; |