diff options
| -rw-r--r-- | utils/TableGen/FastISelEmitter.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/utils/TableGen/FastISelEmitter.cpp b/utils/TableGen/FastISelEmitter.cpp index 2432086..6c16fcf 100644 --- a/utils/TableGen/FastISelEmitter.cpp +++ b/utils/TableGen/FastISelEmitter.cpp @@ -112,9 +112,10 @@ struct OperandsSignature { if (!RC) return false; - // For now, all the operands must have the same register class. + // For now, all the operands must have the same register class or be + // a strict subclass of the destination. if (DstRC) { - if (DstRC != RC) + if (DstRC != RC && !DstRC->hasSubClass(RC)) return false; } else DstRC = RC; |